I've just run a full film speed test for Adox/efke 100 (8x10) - making a series of Zone I exposures to find the film speed that gives the correct density for Zone I....
I developed in Rodinal 1:50 and using my densitometer came to the conclusion that the correct density for Zone I occured when the film was rated at 50 ISO.
There are so many opinions on how to handle Adox films, I have read in several places that the films shouldn't be overexposed and that they should instead be underexposed for optimum results. I have also read that 80 ISO as well as 200 ISO are good ratings for the 100. I can understand that many people rate differently due to personal taste, but what confuses me about the Adox films is that there are so many different opinions on simply getting 'optimum results' and how varied they all are. It seems that half of what I have read advises rating slower and the other half rating faster.
Any feedback would be greatly appreciated.