Histograms in LR or PS for BW platinum prints

Started Feb 23, 2013 | Discussions
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Bill Prosser Contributing Member • Posts: 869
Histograms in LR or PS for BW platinum prints

I'm looking for information about how would the histogram of a properly scanned BW platinum print differ from the histogram of a BW silver halide print? I want to understand what sort of histograms I should be seeking when I work on BW images and try to give them a platinum print look? Does have to do with the mid-tones, the black point, the white point, or what? Is the Clarity slider in LR involved? The end points? What? Thanks in advance for your advice. Bill Prosser

steephill Veteran Member • Posts: 9,775
Re: Histograms in LR or PS for BW platinum prints

Your first problem is that is no such thing as a properly scanned print. Just as with using a camera where exposure is under the creative control of the photographer so it is with scanning. The resulting histogram will depend on a large number of subjective parameters and no two operators will do it the same way.

My advice is to base your decision of the visual results, not the histogram shape. By all means use the histogram to avoid blowing highlights and shadows but don't be a slave to it.

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Steve
www.pbase.com/steephill

Bill Prosser OP Contributing Member • Posts: 869
Re: Histograms in LR or PS for BW platinum prints

I'm not talking about scanning a platinum print. I''m asking how would a theoretical platinum print histogram differ from a histogram of a silver halide print? My guess is that a P-print would have a much differnet distribution in the mid-tones? Thanks for your thougths. I'm trying to mimic that P-print  look with my digital prints, if that is possible. Bill P.

Redcrown Senior Member • Posts: 1,390
Re: Histograms in LR or PS for BW platinum prints

This might help:

http://www.luminous-landscape.com/tutorials/platinum.shtml

In particular, this quote from the above link:

"The natural response curve of the chemistry is very contrasty in the mid tones and very flat in the shadows and highlights"

And if you Google "platinum print histogram" this shows up at the top of the list.
http://artofplatinum.wordpress.com/tag/tom-baril/

Bill Prosser OP Contributing Member • Posts: 869
Re: Histograms in LR or PS for BW platinum prints

Very helpful. Thank you so much. I will investigate your suggestions. Bill P.

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