Setting out this weekend with the aim to shoot some Fuji Acros 100 to develop in Caffenol. I have just got all the ingredients together, this is my first attempt at Caffenol developmental (I developed plenty of films in Rodinal and HC-110). Question: should I expose the Acros at EI 100 or EI 200? It is quite gloomy here in Luxembourg this weekend with lots of rain. Thanks for your input.
from what I've seen from trials, EI 200 should be fine.
Caffenil-C-M for 12 minutes for normal contrast and 14-15 minutes for higher contrast is what I've red.
The times and procedure I had for you, was created by Ezzie ( (there was a url link here which no longer exists) ) a while ago, so if you have any questions regarding coffe, he would know a whole heap of stuff about this.
Not sure what the negative looks like, but judging by the image, the dark areas (trees) are too dark. An EI of 100 may have been better, with normal development.