I want to start contacting 5x7 negs, what is the benifit of using Foma's contact paper or Bergger contact paper over Ilford's warm tone fibre base paper as I've read mixed reports about the two contact papers, I live in the UK these two contact papers are easy to obtain.
Also a lot of people use a bulb above paper as exposing light source, this may seem a silly question but would an enlarger with out the lens attacthed be a usable light sourse.