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Messages 461 to 470 of 653 (Total: 653) First | Prev | Next | Last
Subject 
Author 
Date 
Missed PSP by 1/3 stop 
Larry Francis  18:02 29 Jun 04 
Re: Missed PSP by 1/3 stop 
Phil Davis  6:54 30 Jun 04 
Achieveing 2.4 as PRSP 
Larry Francis  18:10 31 May 04 
Re: Achieveing 2.4 as PRSP 
Phil Davis  7:30 1 Jun 04 
Do all gradients of 0.45 look the same? 
Larry Francis  7:20 28 May 04 
Re: Do all gradients of 0.45 look the same? 
Phil Davis  17:35 28 May 04 
Larry --

A step tablet is really just a pictorial negative whose densities have been extracted and arranged in a regular sequence. if you can standardize your processing so that identically-exposed step tablet image curves superimpose in the graph space, then identically--exposed pictorial images (of identical subject types), processed equivalently, should appear identical.

But this is probably not a practical expectation in the real world; you'll do well to come close most of the time because there are a lot of variables in the field that you can't control well enough to insure perfect results.

Developer dilution, within reasonable limits, doesn't affect image quality significantly; but it can become an issue if you reduce both the strength and volume of the developer sufficiently to risk premature exhaustion. I did an article on developer dilution for D-Max (July/October 1998, vol. 5 issues 3 & 4). You might find some useful information there.
 
Time for a new film developer? 
Larry Francis  7:30 20 May 04 
Re: Time for a new film developer? 
David Rude  16:20 24 May 04 
Re: Time for a new film developer? 
Bill Waldron  14:33 29 Jun 04 
Personal Reference Speed Point 
Larry Francis  19:41 19 May 04 


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