Quote Originally Posted by FNH View Post
Can I do the clearing test in light?


I standardize on T-Max 400 for the clearing test, because I have lots of scrap bits (I use it with a bulk loader) and because it will require the longest clearing time of just about any film.

It won't hurt if you fix films for a small bit longer than necessary, so it is fine to use the longer clearing time for T-Max 400 as your guide.