Acros and Rodinal

greenspun.com : LUSENET : B&W Photo - Film & Processing : One Thread

Has anyone tried Acros in Rodinal yet? From my limited experience with Acros in other developers, Acros and Rodinal seem like a perfect fit.

I'll try it myself, of course, but I was hoping for a time/temp/dilution starting point.

-- Ted Kaufman (writercrmp@aol.com), August 15, 2001

Answers

Ted....I've been using Acros ( 120 ) at 1:35, 75*, and partial stand development, i.e., initial 45 sec. development, let stand and 3 inversions with 4 min. left for dev.....My ASA is 50 and the edge separation is great....I've tried it with PMK but Rodinal has better internal contrast.....

-- Jack (amg223@aol.com), August 15, 2001.

That's an interesting approach, Jack. How long do you develop it for? How does the grain of Acros developed in Rodinal compare to that of Acros in PMK? Does Acros stain well in PMK?

-- Ted Kaufman (writercrmp@aol.com), August 15, 2001.

I have 8'15"/75F EI 64 Rodinal 1:100, contiuous rotary agitation (Jobo) for N; 7'30"/75F EI 64 would probably be about right for printing with a condenser enlarger.

These specs come from a quick speed and curve-plot test; a single "real" test photo looks ok but I only looked at the neg with a loupe and didn't print it.

Of particular interest is that above about 1.90DU, or Zone XI, the curve shape bends _upward_ a little out to 2.10DU, the highest density on that plot. This is of course quite a bit above the usual printable densities but it implies that very high densities could be burned in and still retain contrast.

-- John Hicks (jbh@magicnet.net), August 16, 2001.


Moderation questions? read the FAQ