Got a box of Agfa APX 100 4x5 to use in the Graphic for some studio portraits for school (I'm using TMAX400 for handheld/existing-light stuff). It's proving rather difficult to find a proper development time for it--- I've heard that Agfa's stated times aren't right, and I can only find "correct" times listed for rollfilm.

Anybody here have experience with this film? What developer do you reccomend, and for how long? Will it work in D76?

I've used a fair bit of APX 100 in 35mm and 120. I'll be ordering a box of 4x5 today but will have to wait for the camera before I use it. It works beautifully in D-23 and should be fine in D-76. Considering I use D-23 at 1:3 I'll just use my normal times to start and see how that goes. [20 minutes or so at 68F]

I am a novice in developing sheet film. But with TMax 400 I have used the Kodak RS Developer and Replentisher 7 minutes, 68 degrees, and it worked fine.

I Worked with the AGFA APX 100 and not only a coventional APX, but a very old APX (EXPIRED 1997) And i'm talking, pictures a few months ago. I tried to achieve a "printable" negative with D-76 and It didn't work. The only way I made it, was with the AGFA RODINAL 1:25. With a normal film, just follow the procedure. E.I. 100 - 125 ASA, 8 min, Rodinal 1:25, 20°C
I Hope this help you. Tell me about results!!

Agfa's listed developing times are way too long. For a starting point try 10 minutes at 68° with D-76 1:1 and constant agitation (in trays). If you use a tank, such as Yankee, you may need to extend the time a bit with intermittant agitation. D-76 at 1:1 gives beautiful results with this film. Agfa's 13 minutes is too much. Run a few test sheets.
Good luck ----

The commonly available times from Agfa are for high contrast negatives. If you can find the Agfa document that discusses Agfa developers [not the one discussing the films] it contains times ranging from normal contrast to high contrast. The downside is that the info is only for Agfa developers. You can compare the times and get a ratio. For example if the high contrast time is 20% longer then the normal contrast number then use 80% of Agfa's high contrast time for your intial tests. I hope that makes sense.

I ended up using the data from here (9 min., D76, 68 deg.) and it worked great.