R-RA4 Reduce Contrast / Portraits

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RellikJM

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Joined
Feb 12, 2008
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Colorado
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35mm
I want to try the R-RA4 talked about here on APUG.

Two questions:

1. Why doesn't the process work well for portraits?
2. Is it possible to use Selectol or Selectol Soft to reduce the contrast ?
 
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RellikJM

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Joined
Feb 12, 2008
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33
Location
Colorado
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35mm
Sorry,

R-RA4 - Reversal RA4 for printing from slides.
 

Photo Engineer

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Ok then, color neg-pos paper has a contrast of 2.5 and the film has a contrast of 0.6 to give a final print contrast of about 1.5. Color pos-pos papers had a contrast of 1.0 and color reversal films have a contrast of about 1.8 for a final print contrast of about 1.8.

If you print color positives onto a neg-pos paper the print contrast ranges as high as 1.8 x 2.5 or 4.5 and with finesse as low as about 2 which is good for some scenes, but not others.

A soft B&W developer may or may not work. It usually cannot due to the fact that reversal papers achieved their low contrast by using 9 emulsions to spread out the curve, but neg-pos papers have only 3 primary emulsions and cannot be easily spread.

PE
 
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