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FORUMS Post Processing, Marketing & Presenting Photos RAW, Post Processing & Printing 
Thread started 08 Dec 2009 (Tuesday) 19:47
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Printing digital to a c-print: white point / black point???

 
René ­ Damkot
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Dec 10, 2009 14:00 |  #31

kkamin wrote in post #9166546 (external link)
I will stand by you can't get a paper white area on a color darkroom print, if the negative is of normal density and the exposure is of a reasonable time--it will tone up slightly.

I guess we must agree to disagree then.
But if that is what you want, then by all means, lower the maximum RGB value to 250 or so.

Lowner wrote in post #9169717 (external link)
Other than putting a black (or any other colour) edge on the image, say 5 pixels or even less, I don't know of a way.

I don't subscribe to reducing the already limited dynamic range of the paper to something even less by artificially cutting back the image data.

Agree.

Lowner wrote in post #9169717 (external link)
I remember a fashion for very lightly fogging paper before it was placed under the enlarger and I never saw the sense in that either.

You could expose the entire paper briefly, so that it was just under the threshold. That way any amount of additional exposure would print. Helped with very dense negatives.

A similar technique could also be used to "lift" shadow details in a slide: Do a double exposure of a neutral, even subject (graycard) at "-2 and a bit" (experiment). That will just lift the shadows without effecting the lighter tones (much)


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kkamin
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Dec 10, 2009 14:08 |  #32

Have you ever printed in a color darkroom?

René Damkot wrote in post #9172051 (external link)
I guess we must agree to disagree then.
But if that is what you want, then by all means, lower the maximum RGB value to 250 or so.


Agree.


You could expose the entire paper briefly, so that it was just under the threshold. That way any amount of additional exposure would print. Helped with very dense negatives.

A similar technique could also be used to "lift" shadow details in a slide: Do a double exposure of a neutral, even subject (graycard) at "-2 and a bit" (experiment). That will just lift the shadows without effecting the lighter tones (much)


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René ­ Damkot
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Dec 10, 2009 14:14 |  #33

Yes.


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kkamin
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Dec 10, 2009 15:01 |  #34

René Damkot wrote in post #9172134 (external link)
Yes.

I highly doubt it, if you think there are safe lights in a color darkroom. Color darkrooms are pitch black because the color paper is super sensitive to any type of light. You need to snap your fingers or make a sound when walking around, so people know where you are at. I think you may be commenting on something you don't have experience with.

You cannot print a paper white area with a negative of normal density. Someone else who has worked in a color darkroom please chime in.

René Damkot wrote in post #9166444 (external link)
That's why darkroom illumination works; photographic paper isn't insensitive to it, just very little sensitive.


I shoot with a disposable Dora the Explorer camera
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Lowner
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Dec 10, 2009 15:26 as a reply to  @ kkamin's post |  #35

My colour printing experience is/was limited and it was done in a hand adjitated drum arrangement in a water bath. It was so long ago I simply cannot remember whether we had a safelight on for the paper handling operation or not. Either that, or the Altzeimers is kicking in.

I do remember the nightmare that was getting the filter pack right like it was only yesterday. Funny what sticks and what doesnt.


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Printing digital to a c-print: white point / black point???
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