[APML] LRGB - film only

[kasism@comcast.net]

Hello,

Having done ccd color work and seeing LRGB using ccd (L) and film (rgb), I have laid out a project for some color imaging with a 140mm APO on 35mm film and have decided to go LRGB by shooting Hypered TP followed by hypered RG200.

Following my experience with CCD work, normally I would shoot L at high resolution for 2 to 5x the RGB (RGB is just for color, L is for details) shot at lower resolution.  However, I am wondering if due to the sensitivity of film vs ccd if this relationship is applicable.  Currently I am planning to shoot 2 TP @ f/7 for 1 hr each, 1 TP @ f/7 for 20', 2 RG200 @ 1 hr each.  Ok, so that is almost 5 hrs per image.  

Has anyone done this kind of lrgb?  Is it necessary to shoot so long on rgb or should that be reduced by ?half? just to colorize the TP image?   Would the RG200 image degrade (due to color layers) the TP image to the point that I may as well just shoot color only?  I really think that the RG200 will give less definition than the TP image and it may not be 'blendable' without serious impacts to the TP images.

Any views appreciated.

Keith

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http://home.comcast.net/~kasism
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