A very useful guide for those setting out into black and white film processing.

I'm interested on your thoughts about pre-soaking, it's not something I do but what do you find the benefits to be – more even developing. Do you think it is more important when using shorter developer times (say, under 6 minutes)? I believe that some films should never be pre-soaked as it removes a required chemical on the surface of the film (it escapes me which film that is). Are there any developers that react badly to pre soaking? And what about rotary processors, still a good idea to pre-soak?

Be good to hear what you think.