Formulary's Film Developer 23 is a metol-based semi-compensating film developer similar to Kodak D-23. The developer produces negatives with low to medium contrast. Developer 23 is the favorite of Zone System users. Four rolls of film can be processed in 1 liter of Formulary 23 without replenishment. With replenisher (Formulary DK-25R, 01-0057) a total of 20 to 25 rolls of film per liter can be developed. The chemicals in this kit are used to make a working solution with a shelf life of 6 months.
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Posted by Monday317 on 17th Jan 2018
Used to mix it up by the gallon, back in the day, and thought it was great with Kodak Panatomic X--especially in 35mm. Being a solvent developer, I wouldn't use it with the current weapon of choice, Acros 100. Looking at the Dark Side of staining developers to see if I like the results. D-23 is still the go-to for many in large-format, especially with traditional grain films like Ilford's and Fomapan, among others. Doesn't have the high acutance and razor sharpness needed for 6 x 6 and smaller, maybe D-76, or some of the newer formulas--especially for t_grain films. Enjoy!
Posted by Unknown on 28th Jun 2016
I'm a lover of history, well more like obsessed with it. Plus add in my love of trying out new old things from shooting a black powder musket, to using one of the simplest and a historic developer. Developer 23 is a must try for any home developer, produces amazing negatives with tone separation and surprisingly fine grain. While some films you have to shoot a little slower than box speed, it does give a very historic look. This certainly will be added to my kit with my WW2 era combat photographer impression.