All Things Color for Film and Digital Cinema
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Posts Tagged ‘printer light’

“Daybreakers” – Peter Spierig and Michael Spierig



Directors – Peter Spierig and Michael Spierig

DOP: Ben Nott

Grading Platform – Baselight 4

Format – Panavision Genesis

iRiS-LiveLut – Mac OSX – application update

An update on my OSX software ‘LiveLut’ which had some major coding breakthroughs over the last week.

Over the last few days I have successfully implemented the following features:

3DLut and color correction 25 fps ‘realtime’ previews to :


- Stills


- Quicktime Movies


-and Live incoming Video. (excuse the dodgy iSight camera)

All on a Mac Book Pro.

It still needs a bit of love on the UI side of things although that should not take too long.

I also added a live data view showing the associations between Density, Code Values and Printer Lights from the ‘exposure’ based color changes.

And the ability to save reference stills. (some time in the future i’ll incorporate the ASC color data translation ;)

The initial release of the software will be a simple pared back version available for film-makers to reference when making Photochemical timing adjustments to Answer Prints. The second version will incorporate the Slope Offset and Power Color tools for reviewing Quicktimes with a 3Dlut applied. The third release of the software will enable on set previews of live images direct from the source. The out put can be tapped to an external DVI or HDMI enabled monitor. 

User 3DLuts can be made and loaded into the program.


Photochemical Color Timing


Colormaster Color Analyzer for Photochemical Color Timing

Colormaster Color Analyzer for Photochemical Color Timing


When it come to the ‘dark arts’ photochemical color timing and film processing has to be up there in the TOP TEN. Understanding the film lab and its physical tolerances in achieving AIM Density is as critical as having your internal color management/LUT’s spot on. (you can have the most precise Print emulation LUT in the universe, but if you are unaware of your Film Labs characteristics you could still be in for a surprise. WYSIWYG should really be What You See Is Pretty Much What You Get in the perfect world. The colors and density may be great but both digital and Film projection technologies and their visual characteristics through different light sources in different cinemas are still very …… different. )


 Here is a link to a pdf file that shows the effect of printer light adjustments on a print.

Adrian Hauser