Acros 135 in Rodinal? Acros EI?

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Hey all,

Just picked up my first rolls of acros at adorama. Going to start shooting soon, but I can't find info on developing acros in rodinal at any dilution. Theres a listing on agfa australia's website citing "neopan 100" but I think that means the older 100ss version. I'm shooting 35mm and developing in small (1-2 roll handtanks).

What to rate acros? And for a given rating...

Developing in rodinal:

1. Dilution 2. Time 3. Temp 4. Inversion (secs/min, # of inversions...)

And any other tidbits you think might be useful. I've heared a lot of good about this film, but there's no listing for rodinal on the massive dev chart or at Ed Buffaloe's site (nice site, BTW -- you've been a great help so far :) ).

TIA,

Idan

-- Idan Gazit (id@panix.com), September 23, 2001

Answers

Rodinal 1:100 8'15"/75F continuous rotary agitation (Jobo) for EI 64 is working for me. For manual inversion agitation I'd _guess_ about 15% more time would be a good starting point.

-- John Hicks (jbh@magicnet.net), September 23, 2001.

Hey John,

How is that combo working out for you? I hear the film is virtually grainless or at least almost competes with tech pan. How is it sharpness-wise? I've yet to see anything produced from the film.

BTW -- The massive dev chart doesn't list times for rodinal -- forgot to mention it in my main post.

Idan

-- Idan Gazit (id@panix.com), September 23, 2001.


In my so-far fairly limited experience I find Acros to be in the same class as TMX and Delta 100. IMHO there are no really significant differences in graininess or acutance.

Curve shape is pretty much dead straight. I don't see as much lack of blue sensitivity as TMX, and I haven't yet seen the halation TMX sometimes shows. Otoh it doesn't have the "smoothness" Delta 100 is capable of. Acros may turn out to have the best compromise characteristics of those two other films.

One disadvantage is that it's slower, EI 50-64, but that may be offset by its better reciprocity characteristics.

To sum up, I haven't found it to be significantly better than the other films, certainly not "revolutionary," but it's their overall equal.

-- John Hicks (jbh@magicnet.net), September 23, 2001.


I've developed ACROS in Rodinal (both 120 and 35mm)

1:50 10-12 minutes at 68F (first minute, constant mild agitation, 5 seconds each minute after)

I did find that the 120 seemed to need slightly less development than the 35mm to get the same density negatives.

Quality: different, but not really that much better than TMX, some shots are VERY smooth, I like it more than Delta 100, but I never really liked Delta 100 in Rodinal. ACROS does seem slightly finer grained, but with a bit less of a sharpness "bite" than TMX.

I've also developed some ACROS in Diafine, with pretty good results.

Film Speed : Seems to be slightly below 100ASA, I guess-expose most of my images anyway, so I just go 1/2 stop down from what I would normally guess for 100ASA.

-- jeff callen (jeff@newcity.com), September 28, 2001.


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