In reply to the ND filter thread. I was playing with an old Polaroid 110b folding camera last night. It has a flip up lens cover which incorporates an approx. 2mm pinhole . The Rodenstock lens ranges from f4.7 to f45.When a faster film is used,you are instructed to flip up the lens cover w/pinhole and shoot with the aperture diaphragm wide open.The pinhole f stop becomes f90. This might be an easier solution for the person hunting for large ND filters. KenK _________________________________________________________________ Protect your PC - get McAfee.com VirusScan Online http://clinic.mcafee.com/clinic/ibuy/campaign.asp?cid=3963