tony_mclean

Ctein wrote a very interesting and comprehensive article for 'Darkroom

User' (the U.K magazine, now known as Camera & Darkroom) a couple of

years ago in which he proved that the spectral response of V.C. papers

in combination with many enlarging lenses, introdoced a focus shift of

up to 12mm, even though the grain appeared sharp through a high

quality focus finder.

He suggested shimming the base of a focus finder in stages to

determine the sharpest

Does anyone have any experience of Forte film in large format? Over

here in the U.K. it is reasonably inexpensive and I was wondering how

it compared to say, TX

If you are using the traditional (develop out) palladium printing

approach with ferric oxalate as the iron based sensitiser then the

latent image is not all that obvious. It depends to some extent on how

much residual moisture is left within the sensitised paper after

drying. Don't worry it is almost impossible to assess the correct

exposure based upon the feint latent image. Make a test strip using

equal amounts of the palladium salt and ferric oxalate, expose to a

u.v source or the sun and develop the strip in potassium oxalate or

ammonium citrate, wash and clear as instructions and dry the test

strip before making your assessment of the correct exposure. I can not

give you a recommended time because it depends on a number of factors

including the density of your negative. If you wish to conatact me off

list for further advice then please feel free

Has anyone any experience of using a Nikkor 120 SW lens for 8x10? I am

aware of the tight coverage but what about fall off at the corners. Is

this particularly noticeable? Any other tips would be greatly

appreciat