First off, I'm making enlarged negatives directly from B&W positives, so it's quite different from the inter-positive process. It's also much harder to control contrast. However, I have found that using between dilution E and F (around 1:14 stock) works well for me, with the time around 10 minutes. The thing with APHS lith is that you need to give it constant VERY subtle agitation (this is vital) and development just long enough so that the highlights just fill in- time and temperature are everything! You also need to make sure that you're using enough stock per sheet of film you're putting through the developer- I think that it's around 1.3 fluid ounces of stock per 8x10 sheet of film.
LC-1 is different in that you are in better control of the developer's activity level (pH) whereas highly diluting a developer is merely holding back development in the highlights through developer exhaustion. So far, I'm having much better results with the LC-1: more consistent tonal blocks and better control over highlights. However, the LC-1 is also slower working, with longer development times.
But, believe me, there has been plenty of times when I've almost given up and gone digital negs. I guess I'm just plain stubborn.
On 27-Mar-08, at 5:51 PM, Zev Schmitz wrote:
Good afternoon all!
Ive been using dektol 1:10 for my Arista APHS film for years now (if its not broke dont fix it right?) but have finally been convinced to try a developer with a slower development to help with extending my tones (I wish to move to palladium soon). I had several recommendations for HC110 and as it comes in liquid form, I thought it would be easy enough for a quick go. Ive been working with it all week and have yet to be satisfied with my results, I cant calm the contrast.... The recipe I was highly recommended to use was (from concentrate) 1:40 @ 68F for 7 Minutes. Ive also been told to use "Dilution B" but that just seemed even more contrasty. Does anyone have any hints for this stuff? A better developer perhaps? Ive been following the talk of LC-1 but I'm not allowed to use such chemistry in my institution.
david drake photography