Arista.EDU 100 may, or may not, be 2 stops faster than Efke R25. Do your own testing to be sure.
Arista.EDU 100 may, or may not, be 2 stops faster than Efke R25. Do your own testing to be sure.
Over the years I've used both films, and surprisingly rate them both at 50 EI.
What's your development regime for the Efke at EI 50? I'm a bit surprised, since it's widely felt to deal poorly with underexposure---if you've got something that produces a real speed gain with this film, I think there would be a lot of people interested.
....
I thought it was that it [Efke 25] didn't do too well with OVER exposure. I've read of quite a few people shooting it a half to full stop faster.
I stand corrected. Sorry about that; I guess I was thinking of a different film.
-NT
 It goes against the norm set by all other film manufacturers.
  It goes against the norm set by all other film manufacturers.I hope the 120mm Efke has better QA than in the past. I bought 20 rolls of the 25 from J&C about the time they were going under.

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