[pure-silver] Re: Good acutance and tonality for HP5+ 120 format
- From: Peter Badcock <peter.badcock@xxxxxxxxx>
- To: pure-silver@xxxxxxxxxxxxx
- Date: Tue, 19 May 2009 20:33:56 +1000
Hi Richard,
Thanks for your comprehensive reply. I think the optimal choice for my
requirements is Xtol because:
1. I don't require exceptionally fine grain of Perceptol (at the expense
of losing 1 stop of speed)
2. There have been no suggestions that Perceptol will give better
acutance than Xtol
3. And even if they did, because I'm using 120 size film, any differences
in the acutance will be much less noticeable in comparison to using 35mm
film.
regards
Peter
2009/5/19 Richard Knoppow <dickburk@xxxxxxxxxxxxx>
>
> ----- Original Message ----- From: Peter Badcock
>
> It appears to an extent I have to trade-off linearity and acutance, so I'll
> reduce my requirements down to just acutance. So now....
>
> Which developer (Xtol or Perceptol) will have the potential to offer more
> acutance ?
> Which other film developer might offer more acutance than these ? (Rondinal
> or "Stand" developing excluded).
>
>
> I suppose I better go back and read all of this thread.
>> Xtol and Perceptol are both capable developers and will give you good
>> results. Perceptol or Kodak Microdol-X, which are nearly identical, are
>> extra-fine-grain developers. When ued full strength they will give you
>> slightly finer grain than Xtol but at the price of about a stop less speed.
>> When diluted 1:3 either of these developers loses its extra-fine-grain
>> property and becomes a mild acutance developer delivering grain and speed
>> about the same as D-76. I am not sure about Xtol's performance when diluted.
>> It gives good sharpness in general.....
>> Richard Knoppow
>>
>
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