Anyone know what the recomended development time is for APX400 in D76 1:1 at 68F? This is my standard combination and I can't find the info.

Joel

-- Joel Albert (ajjo@chevron.com), July 12, 2001

Answers

Joel, I usually use 8 minutes which I think is a bit of a pull to keep the highlights down. It works for me. Cheers

-- Scott Walton (f64sw@hotmail.com), July 13, 2001.

What EI are you exposing at? 400 or overexposing to 320?

-- John R. Fowler (jazzphotoguy@yahoo.ca), July 13, 2001.

I exposed the film at ASA400

-- Joel Albert (ajjo@chevron.com), July 13, 2001.

I used 10 min for normal contrast and it was ok. I found times reported in various places for Agfa B&W films are often far off and they tended to produce overdevelopment. I used only a few rolls of APX100 and 400 (and many rolls of APX25) but Agfa films tend to lose highlight contrast and become very grainy when overdeveloped.

-- Ryuji Suzuki (rsuzuki@rs.cncdsl.com), July 15, 2001.

Thanks to everyone for their help ...

The AGFA literature recomends 14m but typically I decrease that time by 30% to my developing techniques which increase the effects of the agitation and improvesthe eveness of the results.

My first shot was 11m and I think I am going to move towards 10m due to the density of the highlights. Unfortunately light conditions during the shoot (I chatered a plane and did some aerial shots of the Kluane Glacier) so I will have to compensate for the contrast differences with the paper.

BTW I develop my film using a 1/2 full tank (i.e. I use 1 reel in a 2 reel tank with enough chemistry to fully cover the 1 reel). The excess space in the tank greatly improves the effects of agitation and eveness of development. The downside of course is that it takes me longer to develop all of the rolls (sigh). I shot 12 rolls of 120 APX400 so my evenings this week are booked.

Joel

-- Joel Albert (ajjo@chevorn.com), July 16, 2001.

Joel, aren't you looking at Ilford recommendation for ID-11 1+1 or something instead of AGFA's recommended time?

I found times published for AGFA films in my Ilford literature "Film chemicals -- low volume" are far off (way too long). (Note: Many other numbers agree with my experience.)

-- Ryuji Suzuki (rsuzuki@rs.cncdsl.com), July 16, 2001.