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 SANDY on 4th Mar 2020
D-23 in devided developmet with Sodium Metaborate as the second part has been my go to developer since the eraly 1970's.
It produces wonderful, fine grain negatives.
Just a word about Photographers Formulary. What a huge asset to photographers! Honest, fast, accurate a pleasure to do business with these fine folks.
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.