Efke 25 roll film developing times for PMK Pyro

[markus_albertz]

Hello everyone,

 

Has anyone found an adequate developing time for Efke 25 roll film

in PMK Pyro?

 

Thanks, Markus

[magic1]

I use 11 1/2 mins and rate it at 12.5 EI. (4x5 tray developed)

[tim_curry]

Markus, I still use Efke 25 at asa 12, 7:00 @ 70f for N development and PMK for most of my shots in 35mm, 120mm, 4x5 and 8x10. Try this combination and meter off of a gray card to see what you think. I've found it to be a good time with roll film as it is too difficult to do N, N+ or N- with roll film.

 

The above mentioned time for asa 12 seems a bit long for my tastes. At asa 25 this might work well enough, but shadow values will be lacking a bit. It would be about right for portraits or very flat light (low SBR). tim

[magic1]

Sorry, I screwed up. 7 1/2 is my Efke 25 time. 11 1/2 is nt Bergger 200 time.

[markus_albertz]

Hello,

 

Sorry I forgot to mention that I expose my Efke 25 roll and 35 mm

film at 25 ASA. I tried 10 min in PMK previously but the negatives

were a little thin. I guess I'll try 12-13 minutes and see what I get

then...

 

Thanks,

 

Markus

[tim_curry]

At asa 25 you may end up with shadow values that are too empty. PMK is a trade off with respect to film speed. It does mask grain well, but does so at the expense of film speed. I've found asa 12 to be about right, but meters, shutters, etc. can vary a great amount.

 

Try 1/2 roll at asa 25 and 1/2 roll at asa 12 and see what you get. My best results have been with asa 12.