Comments on: What is YOUR Usable EI – Exposure Index?

By: Sergey

Sergey — Fri, 19 Feb 2010 17:27:30 +0000

Just wanted to say thanks for opening my eyes to both TX and Diafine. I am getting great results.

Cheers,
Sergey

By: Ty Mickan

Ty Mickan — Mon, 09 Nov 2009 01:47:13 +0000

Thanks Stephen, I’ll watch the temp a bit closer.

By: figitalrevolution

figitalrevolution — Sun, 08 Nov 2009 12:37:06 +0000

While it is true that the temp is not critical for Diafine… it is somewhat critical for your emulsion… I suggest around 70-75 F as the best… anything under 70F in my opinion is too cold. Also agitation is very important …. please watch my videos on the proper technique.

Cheers-
Stephen

By: Ty Mickan

Ty Mickan — Sun, 08 Nov 2009 05:58:48 +0000

Stephen

I developed some diafine last night at 5 + 5. I didn’t check the temp, but it would have been around 25 degrees. You state 70 degrees (F) in your post’s above, but how critical is the temp? I was not that pleased with the results, particularly for the outside mid afternoon shots. they were very contrasty, and didn’t look as nice as my last few Acris rolls that I have shot. I can only put it donw to temp, but I didn’t think that it was that critical with this developer.

By: figitalrevolution

figitalrevolution — Fri, 26 Dec 2008 21:39:12 +0000

Yes, 3 minutes A and 3 minutes B at 70 is fine but I find now that 75 F is best for most modern emulsions.
Cheers-
Stephen

By: Eduardo Tillman

Eduardo Tillman — Fri, 26 Dec 2008 21:32:00 +0000

I have never used Diafine before and I scan my 35mm film using the Nikon LS9000.I will be trying your procedure real soon. My question (to be sure) is (3+3 at 70F)mean 3 minutes in Part A and 3 minutes in Part B? I don’t want to assume the Obvious

By: figitalrevolution

figitalrevolution — Tue, 09 Dec 2008 12:09:50 +0000

Yep your right on! Not all films have the usable EI range of TX but good film and Diafine are hard to beat.

cheers-
Stephen

By: Christian

Christian — Tue, 09 Dec 2008 04:43:21 +0000

“for example, I am working with a film like Kodak TX-just load a roll in the morning and start shooting and adjust your USABLE or “flexible” EI as the day and lighting change”

Whoa, am I reading this right? I load 400TX in my camera. Then for early dawn shots I use the camera as if I had 800 or 1250 in it, during daylight I use the camera as if I had 400 in it, and in the home at night with available light I use the camera again as if it was 800 or 1250 once again? In other words, I have tremendous flexibility with shutter speed and aperture because the film/developer combo has such latitude?

By: Lester

Lester — Fri, 08 Aug 2008 02:40:56 +0000

Thanks for this info, I’ve been experimenting with Diafine myself because I think it’s easier to get consistent results. I have tried it with Fuji Neopan 1600 @ 800 but the results were not as compelling as TX400 @1600. I will be trying Acros asap.