RE: Grayscale perception
RE: Grayscale perception
- Subject: RE: Grayscale perception
- From: "Mark Rice" <email@hidden>
- Date: Tue, 6 Dec 2005 02:57:38 -0500
- Organization: Zero One
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I was referring to large format film recorders. For
retouching purposes, we had to achieve a D-Min of about .08, which required very
high light output, as the film is extremely non-linear in this region. It's also
the region where is is extremely difficult to achieve smooth
gradation.
Mark
Mark,
I have to disagree. I have been using a Celco film
recorder for 10 years. It has 16 bit LUTS and 16 output to the CRT. Extremely
repeatable and stable in color and geometry (it has to be for motion picture
film use). Today its still one of best film recorders you can get. I stopped
using it a couple of years ago because my clients no longer want transparencies,
just digital files. It's for sale now if you want the best....
Best
regards,
David
DAVID SCHARF PHOTOGRAPHY
Scanning Electron Microscopy
Phone 323-666-8657
Fax 323-666-0449
2100 Loma Vista Place
Los Angeles, CA 90039
http://www.scharfphoto.com
http://www.electronmicro.com
Mark
Rice wrote:
I have been using an LVT film recorder for 20
years. It has internal 12 bit LUTs and 8 bit output. Since the beginning, we
have been plagued by quantization in the highlight regions. And the LVT is
the best film recorder - I have used the Lightjet as well, and it does not
have as smooth a gradation or as consistent calibration.
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