[alt-photo] Re: Gum over cyanotype question

Loris Medici mail at loris.medici.name
Tue Feb 28 12:31:07 GMT 2012


Maybe I should provide an analogy (for gum "sharpness" vs cyanotype's):
Think about the same film, developed in stock (or 1+1) D76 vs stand
(or semi-stand) developed in Pyrocat???
(BTW, I do make a distinction between sharpness / acutance and
resolution here...)

Regards,
Loris.


28 Şubat 2012 12:59 tarihinde Loris Medici <mail at loris.medici.name> yazdı:
> Paper and sizing are important for sure. But IME, when everything else
> is kept the same, thinner coatings / emulsions give better apparent
> clarity / sharpness. (But all this is in the academic sense / at micro
> scale; it's the final outcome of the whole "system" - materials /
> process / image / vision / interpretation / so on / so on... - that
> matters ultimately...) I use a fairly thick gum solution myself, and
> never managed to get as good sharpness as I could get from (say)
> cyanotype, not that it was detrimental to the gum image or something -
> just when you compare each in a nitpicking (if you like) manner.
> Trivial indeed...
>
> Regards,
> Loris.
>
>
> 28 Şubat 2012 02:44 tarihinde Paul Viapiano <viapiano at pacbell.net> yazdı:
>> Not that it matters, but I think that sharpness matters less about emulsion than paper and sizing issues.
>>


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