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Overview of film Testing

(Normal Development (unless noted) based on interpretation of data)

Film

 Developer Format

Time

Temperature

Agitation
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
FP4 HC-110(1:41) ASA100 35mm 9.5 20C Normal
D-23 35mm 17 22C Normal
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

 

 35mm

12 D23

2 Borax

N+

 22C Light
FX-2 Classic 35mm 20 22C Light
FX15 35mm 17 20C Normal
FA1027 (1:9) ASA200 35mm 9 (N-1) 20C Light
APX-25 FX-2 Classic 35mm 14 22C Light
HC110 (1:41) 35mm 10 20C Light

 

 

Agitation Methodologies

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.

Minimum Agitation:

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:

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:

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.