Film Processing and Equipment Home Page
Overview of film Testing
(Normal Development (unless noted) based on interpretation of data)
|Efke KB25||DiXactol Ultra ASA 50||35mm||8||22 C||Minimum|
|Rodinol (1:50) ASA 12||35mm||4.5||20 C||Normal|
|Beutler (1:1:100)||35mm||9||20 C||Normal|
|Pyrocat HD||Roll||10, 16||20 C||Normal, Minimum|
|Efke KB100||Beutler (1:1:100)||35mm||13||20C||Light|
|D-23 (no dilution)||Roll||10||22C||Normal|
|Pyrocat HD (2:2:100) ASA 64||Roll||11||21C||Minimum|
|Delta 100||DiXactol Ultra ASA 64||35mm||8||22C||Minimum|
|Pyrocat HD (2:2:100)||35mm||10||22C||Minimum|
|HP5||Pyrocat HD (2:2:100)||4x5||6||22C||Continuous Drum|
|HC110 (1:32) ASA 800||35mm||10, 9||20C, 21C||Light|
|TriX||HC110 (1:41) ASA 250||35mm||9||22C||Light|
D23 ASA 200
|FA1027 (1:9) ASA200||35mm||9 (N-1)||20C||Light|
Partial Stand Development
Partial stand consists of continuous agitation for the first 30 seconds of development, followed by 5 seconds of agitation every 20 minutes. A pre-soak of 4 minutes is recommended if drag-effects are apparent. I've noticed this is more apparent with 120 film then with 35mm and may also be more of an issue with plastic reels.
Minimal agitation consists of continuous agitation for the first 60 seconds of development, followed by 5 seconds of agitation every third minute. With this method a pre-soak of five minutes is strongly recommended to avoid the possible formation of bubbles on the emulsion. Minimal agitation has three desirable results: 1) increased apparent sharpness through the formation of maximum adjacency effects, 2) a compensating effect, and 3) small increased emulsion speed
Normal agitation for tank development is considered to be continuous agitation for the first 60 seconds of development, then agitation for 5-10 seconds every 30-60 seconds thereafter.
Light agitation for tank development is considered to be continuous agitation for the first 30 seconds of development, then agitation two inversions in 5 seconds every 60 seconds thereafter. Agitation can be doubled by decreasing the stand time by 15 seconds. This can be an effective way to control contrast with some developers.