Ed Buffaloe’s Recommendations for Agfa APX 400

Developer

Dilution

Time

Temperature

E.I.

Rodinal

1:75

12 m

70° F

200

PMK

1:2:100

13.5 m

70° F

200

PMK+

1:2:100

14 m

70° F

320

HC-110

B (1:31)

9 m

70° F

400

Comments:  For Rodinal and HC-110 continuous agitation for first 30 seconds, then 10 seconds (4 inversions) per minute thereafter.  For PMK and PMK+ continuous agitation for first 30 seconds, then 5 seconds (2 inversions) every 30 seconds thereafter.  This isn’t my favorite 400 speed film, but it is cheap (in the U.S.) and I have used it a lot and gotten excellent results with it.

Ludovic Stefanicki’s Recommendations for Agfa APX 400

Developer

Dilution

Time

Temperature

E.I.

Rodinal Special (Studional)

1:30  (16ml + 484ml)

9 m 30 s

20° C

200

Rodinal Special (Studional)

1:30  (16ml + 484ml)

11 m

20° C

400

Comments:  Gentle continuous agitation for the first 30 seconds, then 2 inversions every minute.
Rodinal Special gives me finer grain compared to Rodinal, but a little bit less sharpness.  Don't expect miracles with APX400 at E.I.400, but Rodinal Special does a good job. I find that the 1:30 dilution works better than the recommended 1:15.