For optimum camera performance, please read the Operating
Manual before using the camera.
Thank you for purchasing this PENTAX a Digital Camera. Please read this manual
before using the camera in order to get the most out of all the features and functions.
Keep this manual safe, as it can be a valuable tool in helping you to understand all the
camera’s capabilities.
Lenses you can use
In general, lenses that can be used with this camera are DA, DA L, D FA and FA J
lenses and lenses that have an Aperture s (Auto) position. To use any other lens or
accessory, see p.48 and p.282.
Regarding copyrights
Images taken using the a that are for anything other than personal enjoyment
cannot be used without permission according to the rights as specified in the Copyright
Act. Please take care, as there are cases where limitations are placed on taking
pictures even for personal enjoyment during demonstrations, performances or of items
on display. Images taken with the purpose of obtaining copyrights also cannot be used
outside the scope of use of the copyright as laid out in the Copyright Act, and care
should be taken here also.
Regarding trademarks
PENTAX, a and smc PENTAX are trademarks of HOYA CORPORATION.
PENTAX Digital Camera Utility and SDM are trademarks of HOYA CORPORATION.
SDHC logo is a trademark.
Microsoft and Windows are registered trademarks of Microsoft Corporation in the
United States and other countries. Windows Vista is either a registered trademark or
trademark of Microsoft Corporation in the United States and/or other countries.
Macintosh and Mac OS are trademarks of Apple Inc., registered in the U.S. and other
countries.
SDHC logo is a trademark.
This product includes DNG technology under license by Adobe Systems Incorporated.
The DNG logo is either registered trademarks or trademarks of Adobe Systems
Incorporated in the United States and/or other countries.
All other brands or product names are trademarks or registered trademarks of their
respective companies.
This product supports PRINT Image Matching III. PRINT Image Matching enabled
digital still cameras, printers and software help photographers to produce image more
faithful to their intentions. Some functions are not available on printers that are not
PRINT Image Matching III compliant.
Copyright 2001 Seiko Epson Corporation. All Rights Reserved.
PRINT Image Matching is a trademark of Seiko Epson Corporation.
The PRINT Image Matching logo is a trademark of Seiko Epson Corporation.
To users of this camera
• Do not use or store this device in the vicinity of equipment that generates strong
electromagnetic radiation or magnetic fields. Strong static charges or the magnetic
fields produced by equipment such as radio transmitters could interfere with the
monitor, damage the stored data, or affect the product's internal circuitry and cause
camera misoperation.
• The liquid crystal panel used in the monitor is manufactured using extremely high
precision technology. Although the level of functioning pixels is 99.99% or better, you
should be aware that 0.01% or fewer of the pixels may not illuminate or may illuminate
when they should not. However, this has no effect on the recorded image.
• There is a possibility that the illustrations and the display screen of the monitor in this
manual are different from the actual product.
For Using Your Camera Safely
We have paid close attention to the safety of this product. When using this
product, we request your special attention regarding items marked with the
following symbols.
1
Warning
Caution
This symbol indicates that violating this item could cause
serious personal injuries.
This symbol indicates that violating this item could cause minor
or medium personal injuries, or loss of property.
About the Camera
Warning
• Do not disassemble or modify the camera. High voltage areas are present inside the
camera, with the risk of electric shock.
• If the camera interior is exposed due to dropping or otherwise damaging the camera,
never touch the exposed portion. There is a risk of electric shock.
• Wrapping the strap around your neck is dangerous. Take care that small children do
not hang the strap around their necks.
• Do not look directly at the sun through the camera with a telephoto lens attached, as
viewing the sun may damage your eyes. Viewing the sun directly with a telephoto lens
may lead to a loss of eyesight.
• If any irregularities occur during use, such as smoke or a strange odor, stop use
immediately, remove the batteries or the AC adapter, and contact your nearest
PENTAX Service Center. Continuing to use the product can cause a fire or electric
shock.
• Do not place your finger over the flash when discharging the flash. You may burn
yourself.
• Do not cover the flash with clothing when discharging the flash. Discoloration may
occur.
2
• Some portions of the camera heat up during use. There is a risk of low temperature
burns when holding such portions for long periods.
• Should the monitor be damaged, be careful of glass fragments. Also, be careful not
to allow the liquid crystal to get on your skin or in your eyes or mouth.
• Depending on your individual factors or physical condition, the use of the camera may
cause itching, rashes or blisters. In case of any abnormality, stop using the camera
and get medical attention immediately.
About Battery Usage
Warning
• If any leakage from the batteries should come in contact with your eyes, do not rub
them. Flush your eyes with clean water and get medical attention immediately.
Caution
• This camera uses four AA alkaline, AA lithium or AA Ni-MH batteries. Do not use
batteries other than those specified here. Using other types of batteries may cause
the camera to function poorly, or the batteries may explode or cause a fire.
• AA alkaline and AA lithium batteries cannot be recharged. Do not disassemble the
batteries. Attempting to charge non-rechargeable batteries or disassembling the
batteries could result in explosion or leakage.
• The batteries should be inserted correctly, observing (+) and (-) marks on the
batteries and the camera. Inserting the batteries incorrectly may cause an explosion
or fire.
• When replacing the batteries, do not combine different brands, types or capacities.
Also, do not combine old batteries with new ones. Doing so may cause the batteries
to explode or cause a fire.
• Do not short the batteries or dispose of the batteries in fire. Do not disassemble the
batteries. The batteries could explode or catch fire.
• Do not charge any batteries other than rechargeable Ni-MH batteries. The batteries
could explode or catch fire. Batteries for use with this camera other than Ni-MH
batteries cannot be charged.
• If any leakage from the batteries should come in contact with skin or clothes, it may
cause irritation to the skin. Wash the affected areas thoroughly with water.
• Remove the batteries from the camera immediately if they become hot or begin to
smoke. Be careful not to burn yourself during removal.
About the SD Memory Card
Warning
• To avoid the risk of SD Memory Cards from being swallowed by mistake, keep them
out of the reach of small children. Seek medical attention immediately if an SD
Memory Card is accidentally swallowed.
About the AC Adapter
Warning
• Always use the AC adapter exclusively developed for this product, with the specified
power and voltage. Using an AC adapter not exclusive to this product, or using the
exclusive AC adapter with an unspecified power or voltage can cause a fire, electric
shock, or camera breakdown.
Caution
• Do not place or drop heavy objects on or forcefully bend the AC plug cord. Doing so
may damage the cord. Should the AC plug cord be damaged, consult a PENTAX
Service Center.
• Do not touch or short-circuit the terminal area of the AC plug cord while the cord is
plugged in.
• Do not plug or unplug the power cord with wet hands. This can cause an electric
shock.
• Do not drop the product, or subject it to violent impact. This can cause equipment
breakdown.
• To reduce the risk of hazards, use only a CSA/UL certified power supply cord set,
cord is Type SPT-2 or heavier, minimum NO.18 AWG copper, one end with a moldedon male attachment plug cap (with a specified NEMA configuration), and the other is
provided with a molded-on female connector body (with a specified IEC nonindustrial
type configuration) or the equivalent.
Care to be Taken During Handling
Before Using Your Camera
• When traveling, take the Worldwide Service Network listing that is included in the
package. This will be useful if you experience problems abroad.
• When the camera has not been used for a long time, confirm that it is still working
properly, particularly prior to taking important pictures (such as at a wedding or during
traveling). Contents of the recording cannot be guaranteed if recording, playback or
transferring your data to a computer, etc. is not possible due to a malfunction of your
camera or recording media (SD Memory Card), etc.
3
Precautions on Carrying and Using Your Camera
• Do not subject the camera to high temperatures or high humidity. Do not leave the
camera in a vehicle, as the temperature can get very high.
• Do not subject the camera to strong vibrations, shocks, or pressure. Use a cushion to
protect the camera from vibrations of motorcycles, automobiles, or ships.
• The temperature range for camera use is 0°C to 40°C (32°F to 104°F).
• The monitor may appear black at high temperatures, but will return to normal at
normal temperatures.
4
• The monitor may respond more slowly at low temperatures. This is due to liquid
crystal properties, and is not a malfunction.
• Sudden temperature changes will cause condensation on the inside and outside of
the camera. Place the camera in your bag or a plastic bag, and remove the camera
after temperature of the camera and surroundings are equalized.
• Avoid contact with garbage, mud, sand, dust, water, toxic gases, or salts. These could
cause the camera to breakdown. Wipe dry any rain or water drops on the camera.
• Please do not press forcefully on the monitor. This could cause it to break or
malfunction.
• Be careful not to overtighten the screw in the tripod socket when using a tripod.
Cleaning Your Camera
• Do not clean the product with organic solvents such as thinner, alcohol, or benzene.
This may cause color fading or discoloration.
• Use a lens brush to remove dust accumulated on the lens or viewfinder. Never use a
spray blower for cleaning as it may damage the lens.
• Please contact a PENTAX Service Center for professional cleaning of the CMOS
sensor. (This will involve a fee.)
Storing Your Camera
• Do not store the camera with preservatives or chemicals. Storage in high
temperatures and high humidity can cause mold to grow on the camera. Remove the
camera from its case and store it in a dry and well-ventilated place.
Other Precautions
• Periodic inspections are recommended every one to two years to maintain high
performance.
• Refer to “Precautions When Using the SD Memory Card” (p.45) regarding the SD
Memory Card.
• Please note that deleting the data recorded on an SD Memory Card or formatting an
SD Memory Card using a camera or computer will not necessarily delete the data so
that they cannot be recovered using off-the-shelf data recovery software. Such data
should be handled and managed at your own risk.
Regarding Product Registration
In order to better serve you, we request that you complete the product registration,
which can be found on the CD-ROM supplied with the camera or on the PENTAX
website. Refer to p.273 for details. Thank you for your cooperation.
Contents
For Using Your Camera Safely ............................................................ 1
Care to be Taken During Handling ...................................................... 3
How to Change Function Settings ...................... 32
14
a Camera Characteristics
• Features a 23.6×15.8 mm CMOS sensor with approximately 12.4 million
effective pixels for high precision and a wide dynamic range.
• Features Shake Reduction (SR), an image sensor shifting shake
1
Before Using Your Camera
reduction system. This enables you to capture sharp pictures with
minimal camera shake regardless of the lens type.
• Features a viewfinder similar to that of a conventional 35 mm camera,
with a magnification of approximately 0.85 and field of view of
approximately 96%, for easier image composition and manual focusing.
• Features a large 2.7-inch monitor with approximately 230,000 dots, a
wide viewing angle and brightness and color adjusting functions for
high-precision viewing performance.
• Uses AA lithium batteries, AA Ni-MH rechargeable batteries or AA
alkaline batteries.
• Features a Live View function for shooting while viewing the subject in
real-time on the monitor.
• Movies can be recorded by taking advantage of the camera lens
properties. The camera can also output composite video so that you can
view recorded images and movies on a monitor such as a TV screen.
• A user-friendly design has been implemented in various parts of the
camera. The large text size, high-contrast monitor and easy-to-use
menus make the camera easier to operate.
• The CMOS sensor features a special SP coating to prevent dust sticking
to the sensor. The Dust Removal function also shakes the CMOS
sensor for removing collected dust.
• Features Digital Filters to internally process the image in the camera.
You can use digital filters such as Star Burst or Soft while taking pictures
or to process images after taking them.
• Features Custom Image which allows you to adjust settings while
previewing the edited image, enabling a wider range of expression.
• Records in the versatile JPEG format or the high quality and fully
editable RAW format. You can also select JPEG+RAW and record in
both formats simultaneously. Pictures taken in RAW format can be
easily processed internally by the camera.
• Features Sensitivity Priority mode K that automatically adjusts
aperture and shutter speed according to the set sensitivity.
The captured area (view angle) will differ between the a and 35 mm SLR
cameras even if the same lens is used because the format size for 35 mm film
and CMOS sensor are different.
Sizes for 35 mm film and CMOS sensor
35 mm film: 36×24 mm
a CMOS sensor: 23.6×15.8 mm
Angles of view being equal, the focal length of a lens used with a 35 mm camera
must be approximately 1.5 times longer than that of a. To obtain an angle of
view framing the same area, divide the focal length of the 35 mm lens by 1.5.
Example) To capture the same image as a 150 mm lens attached to a 35 mm
camera
150÷1.5=100
Use a 100 mm lens with the a.
Inversely, multiply the focal length of the lens used with the a by 1.5 to
determine the focal length for 35 mm cameras.
Example) If 300 mm lens is used with the a
300×1.5=450
Focal length is equivalent to a 450 mm lens on a 35 mm camera.
Shake Reduction (SR)
Shake Reduction (SR) on the a features a PENTAX original system
which uses magnetic force to move the image sensor at high speeds,
compensating camera shake.
The camera may generate some operating noise when it is shaken, such
as when changing the composition of a picture. This is normal and not a
malfunction.
15
1
Before Using Your Camera
16
Checking the Contents of the
Package
The following accessories are packaged with your camera.
Check that all accessories are included.
1
Before Using Your Camera
Hot shoe cover FK
(Installed on camera)
USB cable
I-USB7
Four AA lithium batteriesOperating Manual
Refer to p.289 for information on optional accessories.
Eyecup F
(Installed on camera)
(this manual)
Q
Strap
O-ST53
Body mount cover
(Installed on camera)
Software (CD-ROM)
S-SW99
Names and Functions of Working
Parts
17
Power lamp
Self-timer lamp/
Remote control receiver
Card cover
Lens mount index
(red dot)
Lens unlock button
Built-in flash
PC/AV terminal
Terminal cover
Hot shoe
Speaker
Strap lug
Microphone
Mirror
MF
AF
AF coupler
Lens information
contacts
Diopter
adjustment lever
Viewfinder
Card access lamp
Monitor
1
Before Using Your Camera
Battery cover
Tripod socket
unlock lever
Battery cover
* In the second illustration, the camera is shown with the Eyecup FQ removed.
18
Capture Mode
Functions of buttons, dials and levers used during shooting are noted.
1
Before Using Your Camera
The factory default settings are explained here. Depe nding on the button, these
settings can be changed.
1
2
5
6
3
MF
4
AF
7
9
0
8
a
b
c
d
e
f
1 | (Green) button
You can assign a function to
this button. (p.179)
2 Shutter release button
Press to capture images.
(p.64)
3 Main switch
Move to turn the camera on
and off. (p.51)
4 Lens unlock button
Press to detach the lens.
(p.49)
5 mc button
Sets the EV compensation
and aperture values. (p.94,
p.100, p.107)
6 Mode dial
Changes Capture mode. (p.83)
7 Focus mode lever
Switches between autofocus
mode (p.112) and manual
focus mode (p.121).
8 K/i button
Press to pop up the built-in
flash. (p.67)
9 e-dial
Sets the shutter speed,
aperture, sensitivity and EV
compensation values.
0 =/L button
You can select the function of
this button either to focus on
the target or to lock the
exposure value. (p.102, p.108,
p.114)
a Q button
Switches to Playback mode.
(p.74)
b U button
Displays the Live View.
(p.143)
c M button
Displays the status screen
(p.23)
Displays the control panel
when the status screen is
shown. (p.24)
d 4 button
Displays the screen for setting
the AF point. (p.117)
When the control panel or a
menu screen is displayed,
press this button to confirm
the selected item.
e Four-way controller
(2345)
Opens the Drive Mode/Flash
Mode/White Balance/
Sensitivity setup menu (p.78).
When the control panel or a
menu screen is displayed, use
this to move the cursor or
change items.
f 3 button
Displays the [A Rec. Mode 1]
menu (p.79). Next, press the
four-way controller (5) to
display other menus.
19
1
Before Using Your Camera
20
Playback Mode
Functions of buttons, dials and levers used during playback are noted.
1
Before Using Your Camera
3
1
2
MF
AF
5
4
6
7
8
9
0
1 Shutter release button
Press halfway to switch to
Capture mode.
2 Main switch
Move to turn the camera on
and off. (p.51)
3 | (Green) button
Press to change the settings,
such as resetting the values.
(p.179)
4 K/i button
Press to delete images. (p.75)
5 e-dial
Use this to enlarge an image
(p.202) or display multiple
images at the same time
(p.204).
7 M button
Displays shooting information
on the monitor. (p.25)
8 4 button
Saves the setting you selected
in the menu or playback
screen.
9 Four-way controller
(2345)
Use this to move the cursor or
change items in the menu or
playback screen.
0 3 button
Displays the [Q Playback 1]
menu (p.201). Next, press the
four-way controller (5) to
display other menus.
6 Q button
Switches to Capture mode.
References to Button Names
In this Operating Manual, the buttons of the fourway controller are referred to in the following way.
21
1
Before Using Your Camera
22
Display Indicators
Monitor
1
The following indicators
Before Using Your Camera
appear on the monitor
depending on the status of
the camera.
Monitor
The brightness and the color of the monitor can be adjusted. (p.250, p.251)
At Start-up or when Operating the Mode Dial
Guides appear on the monitor for 3 seconds (default setting) when the
camera is switched on or the mode dial is turned.
To not show indicators, set [Guide Display] to [Off] in the [R Set-up 1] menu.
(p.248)
Program
P
1
Automatic Exposure
P
10/10/2009
23
1Capture mode (p.83)3Current date and time (p.56)
2World time (p.244)
(only when set to Destination)
10:30AM
Capture Mode
HDR
OFF
OFF
OFF
While shooting, the status screen is displayed showing the current
shooting function settings. You can change the screen displayed by
pressing the M button.
1255.6F
200
1122+3-3
12M
AF.A
AWB
ISO
[37]
P
AUTO
JPEG
1/
ISO
Status screen
Status screen
(All items are displayed here for explanatory purposes. The actual display may
differ.)
M
Custom Image
Bright
JPEG
10/10/’09
AF.A
12M
OFF
OFF
10:30AM
MM
HDR
OFF
[37]
Control panelBlank
23
1
Before Using Your Camera
P
SHIFT
1/
20002.8
ISO
1600
AUTO
1122+3-3
±1.0
G1A1
12 M
JPEG
AWB
AF.A
12
F
111 2
ISO
[
37
13
8
1516
2223242526
]
34567
910
14
88
17
18 19 20
21
1 Capture Mode (p.83)14 EV bar
2 AE Lock (p.108)15 Flash Exposure Compensation
3 Multi-exposure (p.138)/Digital
10 Select AF point (p.117)19 Remaining image storage capacity
• Settings that cannot be changed due to the current camera setup cannot be
selected.
The status screen will disappear if no operations are made within 30 seconds.
•
Press the
•
If no operations are made within 30 seconds in the control panel, the status
M
button to display it again.
screen will reappear.
•
If [Shooting Info Display] is set to O (On) in [Memory] (p.260) of the [A Rec.
Mode 4] menu and the blank screen is selected, the next time the camera is
turned on the blank screen is displayed first.
Playback Mode
The camera switches the type of information display when you press the
M button during playback.
25
StandardCaptured image, file format and indicators are displayed.
Histogram display
Detailed information
display
Captured image and histogram (Brightness/RGB) are
displayed. Not available during movie playback.
Detailed information on how and when the image was
taken is displayed.
No info. displayOnly captured image is displayed.
M
1/
2000 F5.6100-0001
Standard
M
M
1/
2000 F5.6100-0001
Histogram display
M
P
AF.A
m
4
12
M
G2
10:00AM
2
A1
AdobeRGB
100-0001
1/
2000
F2.8+1.5 -0.5
ISO
200
JPEG
10/10/’09
±0
±0
m
±0
±0
±0
No info. displayDetailed information display
The information that is shown first during playback is the same as that of the
last playback in the previous session. If [Playback Info Display] is set to P (Off)
in [Memory] (p.260) of the [A Rec. Mode 4] menu, the [Standard] screen is
always displayed first when the camera is turned on.
1
Before Using Your Camera
26
DR
200
ON
Detailed information display
Use the four-way controller (23) to switch between pages. The copyright
information is displayed on page 2.
Page 1
1
Before Using Your Camera
Still Picture
P
AF.A
1/
2000
F2.8+1.5-0.5
ISO
200
12
JPEG
10/10/’09
Movie
Movie
1.6
10/10/’09
M
M
3:2
10:00AM
P
min
10
ON
10:00AM
G2
mm
24
DR
200
A1
AdobeRGB
100-0001
F2.8
sec
10
G2MONO
A1
+1.5
100-0001
±0
±0
±0
±0
±0
±0
±0
±0
±0
±0
1
32
3
3
24 25
4
5
78 9
2122
4
31
2
1011 12 13 14 15
20
23 24 2526
2
332122
23
6
18 191716
16
17131211
27
28
3029
27
28
3029
Page 2
Still Picture/Movie
Photographer
ABCDEFGHIJKLMNOP
QRSTUVWXYZ
Copyright Holder
ABCDEFGHIJKLMNOP
QRSTUVWXYZ
2
3
2
3
3435
35
3436
36
1 Rotation information (p.213)19 Digital Filter (p.140)
2 Captured image20 Sensitivity (p.90)
3 Protect (p.219)21 White Balance (p.182)
4 Capture Mode (p.83)22 Adjust White Balance (p.186)
5 Focus Mode (p.112)23 File Format (p.177)
6 AF point (p.117)/
Autofocus Mode (p.144)
7 Flash Mode (p.67)26 Color Space (p.187)
8 AE Metering (p.104)27 Image Tone (p.194)
* For images shot with Live View, the autofocus mode is displayed for indicator 6.
* Indicators 7 and 18 appear only for images in which the flash was discharged.
* Indicators 13, 14, 15, 19, and 22 appear only for images taken with the
corresponding functions enabled.
* Indicators 24 and 25 do not appear for RAW images.
24 Recorded Pixels (p.148, p.174)
25 Quality Level (p.148, p.175)
(p.252)
31 Recording time
32 Sound (p.148)
33 Audio mode (p.148)
27
1
Before Using Your Camera
28
Histogram Display
The following histograms can be displayed when playing back still
pictures. The “Brightness histogram” shows the distribution of brightness
and the “RGB histogram” shows the distribution of color intensity. Press
the four-way controller (23) to switch between “Brightness histogram”
1
and “RGB histogram”.
Before Using Your Camera
1
23
11
1
2
1/
2000 F5.6100-0001
23
1/
2000 F5.6100-0001
6457345 673
Brightness histogramRGB histogram
1 Histogram (Brightness)7 Folder number-File number
2 Switch RGB histogram/ Brightness
histogram
3 File Format10 Histogram (B)
4 Shutter speed11 Switch Brightness histogram/
5 Aperture value
6 Protect
* Indicator 6 appears only for images with Protect setting.
If [Bright/Dark Area] is set to O (On) in [Playback Display Method] of the [Q
Playback 1] menu, areas affected by bright or dark portions blink (except when
in RGB histogram display and Detailed information display). (p.203)
8 Histogram (R)
9 Histogram (G)
RGB histogram
8
9
10
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