Pushing Neopan Acros 100

mesh · Nov 2, 2011

Just wondering if many have tried pushing Acros 35mm? I really love it rated as 100, but sometimes require an extra stop. I know I should just try it (and I will) but any thoughts/advice would be appreciated. I usually develop in XTOL 1:1... I was thinking of pushing one stop and then developing for 11 min with slightly less agitation. What do you think? Thanks very much.

Bob-D659 · Nov 2, 2011

Try here, some suggestions for a push to 200, but mostly for 120 format.

http://www.digitaltruth.com/devchart.php?Film=Neopan+100+Acros&Developer=&mdc=Search

powermonkey · Nov 2, 2011

I was recently considering this as well. A quick google search shows that people have pushed it to 400 with great success, so I might try it myself and post the results if I can remember to in the next few days.

tranquibra · Nov 2, 2011

Here is my test data for Acros using Michael Madio's PCM formula (ascorbate-developers.blogspot.com/2011/03/recipes.html):

eveloper: PCM (one-shot)
Temperature: water batch (20-21 Celsius)
Development: full stand (initial 60 secs inversion)

full box speed - about 12 mins;
1 stop push - about 20-21 mins;
2 stop push - about 30-32 mins;

By examining via grain focuser only, grainess is comparable to the results from 510-pyro. Two stop push is probably the practical limit; one stop push is quite decent unless it is an extremely contrasty scene. Sorry I don't have scanner, so I can not upload any sample image.

K-G · Nov 2, 2011

The question of pushing Neopan Acros has been up for discussion before and I sent a link to a useful thread that time. I enclose a link here. Good luck !

Karl-Gustaf

(there was a url link here which no longer exists)

mesh · Nov 2, 2011

Thanks for the info everyone - appreciated.

Thomas Bertilsson · Nov 2, 2011

All numbers aside, I routinely shoot Acros at EI 400 and push process in Xtol 1+1 with good results. With very little loss of shadow detail I find that the resulting negatives print very well in my diffusion enlarger. I agitate every 3 minutes to keep the highlights under control while the shadows are allowed to develop more.

I have no idea what the characteristic curve looks like after that, but the prints are good, and that's all I care about.

- Thomas

Dave in Kansas · Nov 2, 2011

Thomas,

Have you tried it with your famous replenished Xtol?

Dave

Thomas Bertilsson · Nov 2, 2011

Dave in Kansas said:
Thomas,

Have you tried it with your famous replenished Xtol?

Dave

Hi Dave,

I have not. Replenished Xtol doesn't lend itself to push processing very well, as you lose about half a stop of speed compared to stock fresh Xtol.

I recommend using Xtol 1+1 for that. Do your testing.

The attached picture was printed with such a negative. There is a little bit of shadow detail lost, but so what? Shadow detail everywhere is overrated...

- Thomas

Dave in Kansas · Nov 2, 2011

That's a nice picture. I'd feel real good if I turned out images like that.

Practice, practice, practice I suppose.

Dave

SWB · Aug 23, 2017

mesh said:
Just wondering if many have tried pushing Acros 35mm? I really love it rated as 100, but sometimes require an extra stop. I know I should just try it (and I will) but any thoughts/advice would be appreciated. I usually develop in XTOL 1:1... I was thinking of pushing one stop and then developing for 11 min with slightly less agitation. What do you think? Thanks very much.

I've had mixed results asking about this, but I'm often left with a roll of Neopan 100 in my TLR when the light is going away and Have had pretty decent success getting midtones out. Shot 120 400ISO, Dev D-76 1+1 for 17.5 gentle agitation every 2 min or so. Would think you could get functional negs 3 stops out.

pentaxuser · Aug 23, 2017

Thomas Bertilsson said:
Hi Dave,

I have not. Replenished Xtol doesn't lend itself to push processing very well, as you lose about half a stop of speed compared to stock fresh Xtol.

I recommend using Xtol 1+1 for that. Do your testing.

The attached picture was printed with such a negative. There is a little bit of shadow detail lost, but so what? Shadow detail everywhere is overrated...

- Thomas

No loss of meaningful shadow detail here at all in my eyes. When you think of what the now very old generation of people wanted from a B&W shot, especially for people shots, it usually centred around what the "zoners" would regard as a technically poor picture but ones that had "bite" and impact

pentaxuser

RattyMouse · Aug 23, 2017

Interesting seeing these old threads re-appear and notice how many members from days past are no longer posting here.

DREW WILEY · Aug 23, 2017

You can do all kinds of things if you don't mind so-so results. Otherwise, ACROS is a poor choice for this kind of use.

Pushing Neopan Acros 100

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