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D-19 - what do you think of this formula?


Hi Ian, What is FS? I have a Paterson tank which is fine, except that it leaks (oh well). You are saying that one uses less developer in a rotary tank? Obviously my experience is limited, but the 225ml figure is based roughly on Kodak's technical sheet: "If you use Developer D-76 diluted 1:1,. . . you can develop one 135-3 roll (80 square inches) in 473 mL (16 ounces) or two rolls together in 946 mL." So far I have developed 150 rolls of b&w film, most of which has been Tri-X in D-76 1:1 with 250ml stock and 250 ml water. It is still the most consistent film-develop combination I have found.
 
Thank you so much. I will shoot the role this weekend and give it a try!
 
I use D19 for processing 16mm and Super8 movie film. Use both reel to reel (16mm) and spiral tank (S8). Never tried to use with still photography. Make from scratch because I can make only what I need, with no waste.
 

FS - Full Strength. I haven't mentioned Rotary tanks, but yes they do require 125nl of stock developer per film however it's diluted, it's a figure with a slight safety margin. It's close to Kodak'sm225ml of 1+1. I use Paterson tanks for 120 and the odd roll of 35mm and Jobo 2000 series tanks for 5x4 but these pedate the later rotary Jobo's and are inversion tanks.

I think the main reason Ilford and Kodak stopped the 1+3 development times was the rising use of rotary processors where there can be insufficient developer at 1+3.

Ian
 
Ok, I tried it out! T-Max 100 @ 100 developed in D-19 1 + 3 at 8 minutes. Maybe it is o.k. for some purposes, but shooting on a bright sunny day and mostly high contrast scenes, the results were very poor. The main problem is blown out highlights. I could have exposed two stops under and still had more than enough exposure. It worked better in more uniform light conditions. Try again: expose less and develop at 1 + 4, or, just call it day. This one is after reducing exposure and brightness values in Flickr's editor:

https://www.flickr.com/photos/93975264@N05/47936315992/in/dateposted-public/
 
D19 is used to process black white reversal movie film precisely because it promotes contrast. I also used to make bw slides. Too much contrast for normal development of film for bw prints, unless blown out highlights are desired.
 
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