Anybody have thoughts to whether higher silver content films are truer to their ISO rating? I love APX, but ran into problems when they changed emulsions. Too much contrast! I altered agitation, but it was still too contrasty.
I've been trying to hone my developing skills, then I stumbled onto Barry Thornton's website. I did my first ISO/developing test on Delta 100 120 film. I'm not done yet, but the experiment is very interesting. I haven't had time to start testing on APX (35mm) yet. I did take a wild guess and developed my last roll for 20% less time-(from Digitaltruth the time for D-76 1:1 is 13.5 min)-so I developed for 11 min. I am much happier with the results. I've been pouring over their data sheets, and they say their film is accurate to +/-1/6 stop(I think that's right). When you read the developing recommendations, it shows a slightly higher effective ISO rating using the time/soup guide.
I *do* plan on doing testing following Barry's outline, but was wondering if any of you have tested APX and what were your observations. I know it's 'subjective', I'm just curious.
Sorry about the seemingly endless questions in this post.