Apple Shake 4 Truelight User Manual

Truelight

Version 2.1

Shake Node

DIGITAL FILM TECHNOLOGY

Light

Truelight

Product Version: 2.1

Shake Node

Document Version: 1.2

Date: 17/03/2005

Modified: 14/04/2005 21:03

Truelight Overview

Shake Node

Truelight Overview

Truelight is a complete film colour management system for pre-visualising film images on

electronic display devices. It provides a full simulation of the entire workflow from digital data to

final projected image. By carefully measuring and characterising each stage in the workflow, the

closest possible match between preview on the Shake monitor and the final projected film image

can be achieved.

The simplified overview diagram below shows how the Truelight system uses calibration data to

create a 3D colour-cube transform, accurately matching the electronic display of digital film

images to the projection of a print created from the same digital source:

FILM RECORDER

CAL

DIGITAL FILM

IMAGES

SHAKE

NEG FILM

STOCK

CAL

COMBINED

CALIBRATION

TRUELIGHT TRANSFORM

(PLUGIN)

CAL

PRINT FILM

STOCK

CAL

FILM PROJECTOR

HD MONITOR OR

DIGITAL PROJECTOR

CAL

UI MONITOR

For more details on Truelight, please visit the FilmLight web pages at www.filmlight.ltd.uk, and

follow the product link to the Truelight sections.

Truelight

Truelight Licence

Shake Node

Truelight Licence

Truelight is automatically licensed to use generic profiles. The Truelight node can be upgraded

to load custom profiles if required.

For further information, please refer to the Truelight support section of the FilmLight website:

www.filmlight.ltd.uk/support/truelight.html

Truelight

Monitor Calibration

Shake Node

Monitor Calibration

A monitor must be correctly calibrated before it can accurately reproduce images. The Truelight

node provides a built in tool for the visual calibration of the Shake monitor. It is also possible to

use monitor calibration files which have been created using a Truelight Monitor Probe and

imported into the machine.

Before calibrating the Shake monitor, it should be set up to ensure optimal performance in your

current viewing environment. You should use the controls on the display to set the brightness,

the contrast, and the white point. The FilmLight recommended practice document

“Viewing Environment and Monitor Setup” gives more detailed advice on setting up your viewing

environment - this can be downloaded from the FilmLight website.

The following procedure applies to the visual calibration of the Shake user interface monitor. If

you have an external HD broadcast monitor, Truelight provides two preset calibration options

which may be appropriate for your monitor (see

Before starting, ensure that the VLUT and user scripts are switched off:

To start the Truelight Monitor Calibration utility:

step 5 on page 8).

RP-FL001

1 Click on the ‘other’ tool tab

2 This tab should include two Truelight icons - click on the Truelight Calibrate icon:

Î A ‘TLCalibrate’ node will appear in the Node View. This node does not require any inputs or

outputs as it is just being used to generate a series of lineup patterns in the viewer:

Truelight

Monitor Calibration

Shake Node

3 The viewer should currently be displaying two patches side-by-side, a mid grey patch on

the left and a patch composed of alternate white and black lines on the right. Select the

Parameters1 tab to access the Truelight monitor calibration controls:

Before adjusting any of the controls, check that the ‘useProxy’ setting in the ‘Globals’ parameter

tab is set to ‘Base’, and the viewer is set to a 1:1 zoom. If necessary, click on the viewer Home

button

to reset the viewer.

4 Leave the gang button turned on so that all three sliders move together and then drag any

of the rgb sliders to the left or right, to visually match the ‘brightness’ of the two halves of

the screen.

Î It may help to view the screen through half-closed eyes so that the white/black lines on the

right-hand side of the viewer appear to merge into a continuous grey patch.

5 If there is any noticeable colour cast on the left side of the screen compared to the right,

click on the gang button to turn it off and then trim the rgb sliders independently to match

the colour of the two patches.

6 Once the two halves of the viewer match, and there appears to be a single uniform grey

patch across the whole monitor, click on the ‘Next’ step button

Î Two new patches appear at half the level of the previous ones (i.e. one stop less), and the

step number shown above the rgb sliders increments.

Truelight

+ 12 hidden pages