FastRawViewer FRV1BE User manual

Version 1.1
User Manual
Copyright © 2014-2015, LibRaw LLC, www.libraw.com
FastRawViewer – user manual
1

How FastRawViewer Helps You

FastRawViewer (FRV) is the only solution for those who:
Shoot in RAW and are tired of wasting hours or days on browsing through piles of shots and
sorting them
Tired of rendering all those RAWs into JPEGs so that you can quickly browse through them
with your client, CMO, senior designer, editor in chief; or show them to your friends and family members.
Are in constant need of very quick viewing, visually and technically analyzing, sorting
through hundreds or thousands of RAW shots, and selecting the apt ones for further processing
Want to shoot in RAW, but don’t, fearing to get mired in sorting RAW files Are forced to use JPEG format, because your previous experiences tell you that it is
impossible to quickly select and show your client the images taken in RAW
Are in need of tools to instantly adjust white balance and exposure (brightness) right while
browsing through the shot
FastRawViewer is the first and the only dedicated application with the purpose of extremely fast
culling and pre-processing of RAW images: i.e. display, visual and technical analysis, applying basic
corrections, sorting and setting aside or directly transferring the selected ones for further processing.
FastRawViewer Strengths:
Display of the actual RAW as well as the actual RAW histogram For the first time, a comfortable speed of RAW file viewing (together with histograms),
provided by FastRawViewer using the power of modern processors and video cards to process RAW images,
o 6-8 frames per second on a modern notebook or desktop computer for files from modern
photo cameras (16-36 Mpix, testing was conducted on a mix of shots from recent cameras, SSD or RAID recommended for peak performance)
o 24-30 frames per second for CinemaDNG 2.5k on the same equipment (we used
Blackmagic Pocket Cinema files for testing)
Support of almost every single existing RAW format (that is, almost every known digital
camera)1, including native out-of-camera DNG files as well as the files converted to DNG.
View JPEGs (including embedded JPEG thumbnails) – and also display the histograms.
With only one significant exception: Foveon cameras are not supported.
FastRawViewer – user manual
The convenience of working with the shots taken in the RAW + JPEG mode, with two files being
paired:
a) While listing through files, you have the option to ignore the second file in the pair b) JPEGs (including embedded thumbnails) are considered to be “additional images” and are
immediately accessible for viewing
c) When you move a file from the RAW + JPEG pair to another folder, the other file follows d) And, of course, you can always switch this mode off, if you so choose, and treat the files as
separate.
Instant display of RAW files directly from any memory card or other file storage - without
customary delays for importing, creating catalogues, libraries, and temporary databases.
The possibility of doing a quick visual and technical analysis by:
a) Examining the real RAW histogram b) Assessing the exposure based on:
i. Spotlighting of over- and underexposed areas on the shot
ii. Over- and underexposure statistics
c) Outlining the in-focus and highly detailed areas on the shot d) Assessing per-channel exposure and acutance e) Assessing the noise level in the shadows
Time-saver: exposure and white balance adjustments can be made while browsing RAW files
and are saved in XMP files so that they can be automatically applied when you open that shot in Adobe Lightroom or Adobe Camera Raw
Time-saver for series, including panoramas: propagation of white balance, exposure, and image
orientation adjustments from one shot to the entire series.
Highly compatible system of assigning labels and ratings to images, including the user-defined
labels. Ratings and labels are written into XMP files and are read by Adobe software (and others which acknowledge XMP sidecar files).
Moving the selected shots into folders chosen by the user. Moving the rejected shots into a special folder, which can be reviewed again later. Support for black and white RAW, including shots from cameras converted to b/w by removing
the color filter array.
Warnings when FastRawViewer comes across a damaged RAW file. Monitor color profile support, without the loss of image rendering speed. Modifying settings to suite your workflow
a) You can set your own keyboard (or keyboard+mouse) shortcuts for every action. b) The settings panel allows you to turn off the ones you don’t need, and change the others to
your preferences.
FastRawViewer – user manual
Table of Contents
How FastRawViewer Helps You ............................................................................................................ 2
System Requirements ........................................................................................................................... 7
Windows ....................................................................................................................................... 7
Mac ............................................................................................................................................... 7
Software Installation ............................................................................................................................ 8
Windows ........................................................................................................................................... 8
Choice of Version: OpenGL or DirectX.......................................................................................... 8
Installation .................................................................................................................................... 8
Mac OS X ......................................................................................................................................... 12
Program Activation ............................................................................................................................. 13
Activation of the License you’ve purchased ................................................................................... 15
Manual Activation .......................................................................................................................... 16
Using FastRawViewer ......................................................................................................................... 18
Conventions in this Manual ............................................................................................................ 18
Launching FastRawViewer .............................................................................................................. 18
Main Screen .................................................................................................................................... 19
Workspace .................................................................................................................................. 21
Changing the Settings ..................................................................................................................... 24
Help with the keyboard Shortcuts .................................................................................................. 25
Working with the files .................................................................................................................... 26
Folder Navigation ....................................................................................................................... 26
Working with removable media (flash cards, etc.) .................................................................... 27
Folder file navigation .................................................................................................................. 28
Additional methods of navigating folder files ............................................................................ 29
Opening a file/folder using the menu ........................................................................................ 30
FastRawViewer Start-up Modes ................................................................................................. 31
Starting without a filename ........................................................................................................ 31
Creating and reading XMP files .................................................................................................. 32
Compatibility with RawPhotoProcessor (.rpps files) .................................................................. 33
FastRawViewer – user manual
Copy and Move operations ........................................................................................................ 33
«Close» File ................................................................................................................................ 35
Displaying the Image ...................................................................................................................... 36
Embedded and External JPEG ..................................................................................................... 37
Zooming and Panning ................................................................................................................. 38
Changing Image Orientation ....................................................................................................... 38
Viewing file channels, viewing in black and white mode ........................................................... 39
Boosting the shadows ................................................................................................................ 40
Tonal Curve ................................................................................................................................. 41
Support for Cameras Modified to Black and White ................................................................... 42
Customizing Display Modes ........................................................................................................ 42
Using Monitor Profile For Display .............................................................................................. 44
Working with Exposure .................................................................................................................. 45
Histogram ................................................................................................................................... 45
Exposure statistics ...................................................................................................................... 46
Spotlighting the Areas of Over- and Underexposure ................................................................. 48
Automatic exposure correction .................................................................................................. 50
Manual Exposure Correction ...................................................................................................... 51
Recording of the exposure correction to XMP files: Interaction with Adobe Programs ........... 51
Exposure Adjustment when browsing to the next file ............................................................... 52
White Balance ................................................................................................................................. 52
Indication of the white balance .................................................................................................. 52
White balance Presets ................................................................................................................ 54
Controlling which White Balance will be used when opening a file .......................................... 55
Setting White Balance by “click-gray” method .......................................................................... 55
Manually setting the color temperature .................................................................................... 56
Outlining In-Focus and Highly Detailed Areas ................................................................................ 56
Ratings and Labels .......................................................................................................................... 59
Title and description ....................................................................................................................... 60
FastRawViewer – user manual
Integration with External Programs ............................................................................................... 61
Performance Settings ..................................................................................................................... 62
Hard Disk Drives (HDD) ............................................................................................................... 62
Flash cards and network volumes .............................................................................................. 63
Video Card Processing Settings .................................................................................................. 63
Troubleshooting ................................................................................................................................. 64
OpenGL error warning when starting the application ................................................................... 64
Black Screen in Image Display Window .......................................................................................... 65
Screen does not fully update .......................................................................................................... 65
Other problems .............................................................................................................................. 65
Debug Information (Debug log) ...................................................................................................... 65
Program Settings ................................................................................................................................ 67
File Handling ................................................................................................................................... 67
Removable Media ....................................................................................................................... 70
RAW+JPEG ...................................................................................................................................... 72
XMP ................................................................................................................................................. 73
Interface.......................................................................................................................................... 75
Zoom ........................................................................................................................................... 77
Image Display .................................................................................................................................. 78
White Balance ................................................................................................................................. 81
Color Management ......................................................................................................................... 83
GPU Processing ............................................................................................................................... 84
External Programs .......................................................................................................................... 86
Performance ................................................................................................................................... 87
Other ............................................................................................................................................... 89
Informational panel settings .............................................................................................................. 90
Folders Panel .................................................................................................................................. 91
Filmstrip/Thumbnails Panel ............................................................................................................ 92
EXIF Panel ....................................................................................................................................... 92
FastRawViewer – user manual
XMP Metadata Panel ...................................................................................................................... 94
Exposure statistics panel ................................................................................................................ 94
Customizing the Status Bar ................................................................................................................. 95
Setting the keyboard shortcuts .......................................................................................................... 97
Settings for Apple Magic Mouse/Trackpad .................................................................................... 99
Standard FastRawViewer Keyboard Shortcuts ............................................................................ 100
List of Supported Cameras (RAW formats) ...................................................................................... 106
Copyrights and Acknowledgements ................................................................................................. 125

System Requirements

Windows

Recommended system: Windows 7 – Windows 8.1, 64-bit. 32-bit versions Windows: Windows Vista – Windows 8.1 Windows XP is supported in a separate “Legacy” version of FastRawViewer. Processor with SSE3 support or later (meaning released 2005+):
o Intel: Pentium 4 Prescott or later; Celeron D or later, any Core processor, Intel Atom o AMD: Athlon 64 or later o The complete list of supported processors is available on Wikipedia
Video card with DirectX 9.0 support or later, or with OpenGL 2.1 or later (see below Choice
of version: OpenGL or DirectX).
FastRawViewer will work with practically any video card with 3D acceleration support,
released 2006+ (users of older cards may experience some problems).
Mac
Intel-based Mac Processor with 64-bit support (that’s every Intel Mac, excluding Mac Mini 2005) Mac OS X 10.6 or later We recommend a video card with OpenGL 2.1 support (that’s every native Mac video card,
that works with OS X 10.6). An OpenGL emulator will be used if such a video card is not present in the system; some of the advanced features of FastRawViewer will take significant time to render.
FastRawViewer – user manual

Software Installation

Windows

Choice of Version: OpenGL or DirectX

FastRawViewer for Windows is available in two versions:
1. Graphics based on Microsoft DirectX – this version will work with any video card that supports
DirectX 9.0 and higher (DirectX 9.0c support or later is recommended). This version is recommended for the majority of users: DirectX drivers are supported by the manufacturers better, and the program will run smoothly as soon as the equipment is compatible (most cases, it is).
2. Graphics based on OpenGL – requires a video card with at least OpenGL 2.1 support and
(usually) the most current drivers are recommended. We suggest OpenGL version be used with the following video cards:
a. Nvidia: GTX4xx and newer, and the corresponding versions of Nvidia Quattro. b. ATI/AMD: Radeon HD5xxx and newer.

Installation

The program is installed by running the executable file of the distribution package (FastRawViewer-1.1.0.xxx--Setup.exe)
If you downloaded FastRawViewer from our site on the first program launch, current versions of Windows will display the following security warning:
After the “Run” button is pressed, the UAC (Windows User Access Control) system will display a warning once again:
FastRawViewer – user manual
Both dialogs allow you to verify that the setup program is signed with unique LibRaw LLC electronic signature.
FastRawViewer – user manual
To proceed with the installation, you must agree to the dialog above, and the usual Setup Wizard will be launched:
At the next screens of Setup Wizard:
1. The User License is displayed
2. An installation folder is suggested; a different folder may be selected by the user
3. Creating a Group in the Programs menu is suggested
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4. A list of possible additional actions is shown: add FastRawViewer to desktop right-click
menu, add icon to the desktop, add icon to the Quick Launch menu
Afterwards, the installation takes place. Upon completion, the following screen appears:
In case of any errors during installation, please contact us via www.fastrawviewer.com/contact or technical support forum at www.fastrawviewer.com/forum.
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Mac OS X

Double click on FastRawViewer-1.x.x.dmg to mount the FastRawViewer disk image you've downloaded. The content of the disk image will appear like this:
Drag FastRawViewer icon onto the Applications icon. The program will be copied to Applications folder and ready to run.
Other items contained in the disk image are:
FastRawViewer Manual (FastRawViewer-manual.pdf) Brief description (README.txt) and Changelog (Changelog.txt) End-User License Agreement (EULA.txt), Copyright Information (Copyrights.txt) Licenses and Copyrights for libraries and components used in FastRawViewer (Licenses
folder).
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FastRawViewer – user manual

Program Activation

During the first launch FastRawViewer will display a splash screen suggesting the activation of the trial version
Immediately after that, with the main program screen being opened, FastRawViewer will try to connect to Internet to activate the trial version:
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No private data is transferred during the activation process; the only data that is passed through the Internet is FastRawViewer version number and unique non-reversible 64-bit hash code identifying your computer; this code can’t be decoded to extract any private or personal data.
After the successful automatic activation the trial period begins; the trial time left is indicated in Help-About window and on the splash screen that pops up when FastRawViewer is started.
In case the automatic activation was impossible for some reason (no Internet access, or FastRawViewer was blocked by firewall) you will be presented with the screen for manual activation:
Here you can allow FastRawViewer a one-time Internet access and press Activate Trial button to start 30-day free trial period.
If after pressing Activate Trial button FastRawViewer still can’t access activation server an additional button for Manual Activation will appear:
Pressing this Manual Activation button will take you to manual activation dialogue (for more details, please see below, in “Manual Activation” section)
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Activation of the License you’ve purchased

To use FastRawViewer after the trial period, the user will need to obtain a full license.
To obtain the license, please click the “Buy License” button or open
www.fastrawviewer.com/purchase in your browser. As a result of the transaction, you will be
provided with the license key (online and as a separate email). This license key should be entered into the License Key field of the activation dialog, which is also available through Menu-Help- Purchase/Activate):
After the license key is entered, please click Activate license button. The license will be activated and you will be able to continue using the program. The Help-Purchase/Activate menu item will now be renamed to Help-Registration data, and the respective dialog will show your registration data:
To complete the activation (of both the trial and the fully licensed version) the program needs a one-time access to the Internet. If you cannot grant the appropriate Internet access permissions, you can activate the program manually.
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Manual Activation

If the program fails to connect with the activation server (one-minute timeout happens), you will see a pop up alert, with a «Manual Activation» button on the bottom right of the notification window.
After clicking the «Manual Activation» button, a «Manual Trial Activation» window will pop up:
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Depending on your Internet access, you can use one of the 3 ways to obtain the activation code:
By using browser (if your browser has an internet connection) – use this if your browser can connect to the Internet. Simply click this link: http://activate.fastrawviewer.com/activate.cgi and you will see a browser window pop up with your unique activation key:
By using E-mail client with an automatically prepared message click the
mailto:activate@fastrawviewer.com link and your mail client will create a new pre-populated email
to activate@fastrawviewer.com You will only need to click send.
By using an E-mail client and manually writing the message you can send an email to
activate@fastrawviewer.com using the text in the window below (I'm unable to activate…»
If you choose to obtain the activation key via email, you will receive a reply email with the text identical to that which you would see in the web browser (the activation key, however, will be different.) You can then use the Activation Key (from the browser or email) and enter it into the Activation
Key field (it is best to use Copy-Paste, as every character of the key is important) and press «Activate.»
After clicking the «Close window» button, the window will close and the FastRawViewer activation window will display the registration status.
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Using FastRawViewer

Conventions in this Manual

The user manual is the same for Windows and Mac versions of FastRawViewer.
All of the standard keyboard shortcuts are given in Windows notation (for example, Ctrl-O).
For OS X please use the following substitutions:
Ctrl on Windows – is Command on Mac Alt on Windows – is Option on Mac.
All keyboard shortcuts are fully customizable (see below, the “Keyboard Shortcut Settings”). Throughout this text we will be using default program settings for keyboard / mouse shortcuts.

Launching FastRawViewer

To launch the program:
Start it up the usual way (Double-click the icon) Or drag any RAW or JPEG file onto the icon, then the program will open and display that
file.
Or drag a folder (catalogue) onto the icon - the program will start and will open the first
RAW file in the folder.
After start-up you will be presented with the program’s main screen.
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Main Screen

On the program main screen:
On top, as usual, there is the menu that allows access to almost all features, excluding those
actions, which can only be performed with the mouse.
o File – navigating through the files (opening files and folders, moving to the next file,
moving files to different folders, sending the currently displayed file to an external program / raw converter).
o View – controls image display mode (full-color or per-channel viewing; image
orientation; outline the highly detailed areas and areas containing high-contrast edges (focus peaking), perform various adjustments to the image, etc.)
o Window – controls the visibility and layout of information panes; on the above
screenshot, those panes are located to the right of the image.
o Label – allows to choose XMP Ratings / XMP Labels o Help – the name says it.
The currently displayed RAW file is in the center of the window. To the left, the following panels are displayed:
o Folder tree o EXIF data
The following panes are located to the right:
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o Histogram (RAW for RAW files, JPEG – for JPEG display) o Over/Underexposure statistics o XMP Rating and XMP Label
The Filmstrip/Thumbnails panel is placed below the window, showing the file previews for the
current folder.
Additional information and operational elements are placed in the bottom (status) bar.
Default elements:
o File open icon o Buttons for navigating through the current folder: previous file, number of file in the file
list and the length of the list, next file.
o Buttons for switching between RAW-JPEG-external JPEG o Buttons for turning on Focus Peaking and Shadow Boost o Exposure correction control button. o Overexposed and Underexposed area display buttons. o Preset white balance choices drop-down menu. o Buttons for quick control: Fullscreen, hide/show Filmstrip panel/all panels, display and
edit settings call-up.
Aside from the aforementioned, if the window is wide enough, the following buttons will be
displayed:
o File name o Brief EXIF data for the shot (Exposure settings, ISO setting, applied exposure
compensation, use of flash, lens's focal length).
o Manual white balance customization button. o Contrast curve selection menu. o Image orientation indicator and rotation buttons.
Additionally, the following settings can be indicated if desired:
o The name of the current folder o Current image zoom factor and the control buttons. o Time spent on the loading and decoding of the current file. o Per-channel display (R-G-B) button and simulated conversion to a black and white
version.
o XMP rating and label control buttons.
The elements shown in the bottom status bar can be customized according to your needs. For this,
press the “Customize FastRawViewer” button on the lower right corner of the screen, choose “Customize bottom bar” and select the necessary display mode for each possible element. For more detail, see below in the “Customizing the status bar” section.
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Workspace

The informational panels (Histogram, EXIF, Folders etc.) can be dragged from the main window of the program to the side (for instance, to a second monitor) and be made floating”. Panels can be turned on/off through the Panel menu (or the F2-F7 hotkeys), the statistics and XMP-data panels are fixed in size, but the sizes of the other panels can be changed.
Any floating panel can be made semi-transparent and placed in the workspace, above the image.
Setting Preferences – Interface – Disable transparency for panels outside of main window makes a floating panel completely non-transparent when it is placed outside the main program window.
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The other panel settings are individualized, and are described in the Preferences – Informational Panel Preferences.
Informational panels can be closed (x on the upper right corner of the panel or corresponding item in Menu – Panels), and re-opened through Menu – Panels. The same menu has the option Move all panels to dock, which will restore the standard layout of the program workspace.
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MenuPanelsHide all panels (or, press Tab) – hides all informational panels:
With this, the top menu bar is hidden as well (this can turned off through Preferences – Interface – Hide menu bar when hiding information panels). You may, also, hide bottom information bar (status bar) by setting Preferences – Interface – Hide bottom window bar when hiding information panels. Pressing Tab the second time returns everything to the way it was. You can disable the hiding of informational panels that are outside the program window. This is useful when, for instance, you have moved them to a second monitor: Preferences – Interface –
Do not hide panels outside of main window.
Menu – View – Fullscreen (or the F key, or Fullscreen button on the bottom bar) switches the full
screen mode on/off. Choosing this item again or second press of the F key escapes from full screen mode (for Mac OS X 10.6 we have no true full screen mode, instead the main program window will be maximized).
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Changing the Settings

To bring up the settings control window, use Menu–File–Preferences /Ctrl-P on Windows, Cmd­comma (,) on Mac/. You will be presented with the following:
Further in the text, this settings control menu (Preferences) is mentioned many times, each time we refer to particular aspects and features of FastRawViewer. Furthermore, everything is described again in the Program Settings section.
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Help with the keyboard Shortcuts

Every keyboard action can be seen in the Keyboard Shortcuts Help window, which can be reached by pressing F1 function key or through Menu–Help:
All keyboard shortcuts can be changed and tuned to your taste. The instructions on how to do this are in the “Adjusting the Keyboard Shortcuts” section below. If the keyboard shortcuts are changed, the help window will show their current state.
The standard list of keyboard macros is given in the «Standard FastRawViewer Keyboard Shortcuts» (at the end of the document
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Working with the files

Folder Navigation

Folders can be navigated via the Folders panel, the standard location of which is to the left of the main program window:
The folders can be navigated with the:
1. Mouse: a. Clicking on the triangle to the left of the folder name opens the subfolder tree. A
second click on the triangle closes the subfolder tree.
b. Clicking once on the folder name loads the first preview in the Filmstrip panel. c. A double-clock on the folder name loads the first preview and opens the first file of
the folder in the main program window.
2. Keyboard: a. The up/down arrows, PgUp/PgDn keys, and Home-End moves across the list while
loading the previews into the Filmstrip.
b. Right/Left arrows open/close subfolders. c. Enter loads previews and opens the first file in the folder.
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Working with removable media (flash cards, etc.)

Automatic recognition of inserted media
Under default settings, FastRawViewer recognizes the removable media (memory card, USB flash drive), and, having recognized it, shows the following dialog:
Removable Media insertion detected, FastRawViewer will open the newest folder found on it under the DCIM folder”.
The action resulting from detecting removable media can be changed in Preferences – Removable Media to one of the following variants:
Do nothing (Do nothing) Open predetermined folder (by default, \DCIM) Opens the most recent (by date of modification) folder in the predetermined folder.
You can also turn off the above-shown warning in the same Preferences section.
Unmounting (ejecting) removable media
If the removable media doesn’t use any application except FastRawViewer, then it can be ejected without closing the program.
For this, one needs to right-click the respective media icon in the Folders panel and to select in the context menu the (only) item, Unmount MediaName:
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After a successful unmount, the media will be freed up without additional messages. If there are any problems, then the following error message will be displayed:
This message means that the removable media is in use by some other program as well, and FastRawViewer cannot safely unmount it.

Folder file navigation

Navigation via the Filmstrip/Thumbnails panel:
Choosing a file in the Filmstrip/Thumbnails panel leads to it loading in the main program window.
The Filmstrip/Thumbnails panel can be navigated via:
1. Mouse:
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a. Rotating the mouse wheel (if it exists) or using the Scrollbar - scroll through the list. b. Single or double-click on a preview chooses the file.
2. Keyboard: arrows, PgUp/PgDn, and Home/End navigate through the list, the chosen
element loads automatically.
When moving to the next file, zoom is set according to the preferences - Preferences – Image Display Image zoom on next file:
Keep zoom ratio – maintains the current zoom size Keep image width – maintains the image width Fit to screen – Turns on the Fit to screen mode.

Additional methods of navigating folder files

FastRawViewer creates a list of files in the folder, including the following file types:
Files with standard RAW files extensions (the list is pre-defined in the program) JPEG files (with .JPG, .JPEG extensions) Files with other extensions, as defined in Preferences – File Handling – Additional RAW
extensions.
If the RAW+JPEG mode is switched on (Preferences – RAW+JPEG – Handle RAW+JPEG together),
the .RAW and .JPG files with identical names will be considered as one “virtual” file with several
representations (RAW, embedded JPEG, external JPEG).
Within the above-described alphabetized list, you can navigate:
Forward (from AAAAA.RAW to ZZZZZ.RAW): through Menu–FileNext File (standard
keyboard shortcuts: Spacebar, Ctrl-Right Arrow)
Backwards: Menu–File–Previous File (Backspace, Ctrl-Left Arrow) Setting an arbitrary number in the list: clicking on the file number in the list (the leftmost
button in the bottom bar of the program) or Alt-O opens a dialogue to input the file number:
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You can enter the number you need in this dialogue (the up-down arrows and PgUp/PgDn allow you to quickly change it with a large/small step) and go to that file by hitting Enter or the OK button.
When moving to the next file, the zoom factor is determined in accordance with the setting in Preferences – Image Display – Image zoom on next file:
Keep zoom ratio – maintains the zoom factor Keep image width – maintains the width of the image Fit to screen – turns on the Fit to screen mode.

Opening a file/folder using the menu

To open a file, you can use one of the following:
Menu – File – Open (or Ctrl-O) Through the list of recently opened files (Menu – File – Recent Files) Drag-n-Drop the file onto the program icon Drag-n-Drop the file onto the program window.
A folder (catalogue) can be opened in similar ways:
Menu – File – Open Folder (Ctrl-Shift-O). Menu – File – Recent Folders – a list of recently visited folders. Drag-n-Drop folders onto the icon of the program. Drag-n-Drop folders onto the program window.
When opening a folder:
With default settings the first (in alphabetical order) RAW or JPEG file in the folder is
displayed
If the Preferences – File Handling Remember last opened file in folder setting is on, and
the given folder was opened earlier, the file which was viewed last in the folder will be opened first.
Drag and Drop
Files and Folders can be “dropped” onto the window of the program, as well as on the icon on the desktop or the OS X Dock. If so:
1. If you dropped several files, then the first one opens (the order is follows the order of the
file selection in the file manager). All others will be ignored.
2. If you dropped several folders, then the first one opens. The others will either be ignored,
or remembered for future browsing (see below for the “Navigating through several folders” section).
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