A few days ago, I've accidentaly overexposed a roll of velvia 100F by 4 stops The contrast quite variable between shots, but I more less exposed for highlights. I intended to process it in c41. I've done cross processing velvia before and was satisfied with results. My questions are: Can a -3 pull make it useable neg? Is -3 pull maximum pull i can get? What can I expect if I processed it in -3 E6?