It was a choice we had when making direct enlarged negatives for alternative print processes. Put it in the process and you could make a platinum print from your 35MM without having to make a double effort at it. It lacked a bit of the expansion some times required to get a good neg though. Eric Neilsen Eric Neilsen Photography 4101 Commerce Street, Suite 9 Dallas, TX 75226 www.ericneilsenphotography.com skype me with ejprinter Let's Talk Photography _____ From: pure-silver-bounce@xxxxxxxxxxxxx [mailto:pure-silver-bounce@xxxxxxxxxxxxx] On Behalf Of Martin magid Sent: Thursday, March 21, 2013 1:17 PM To: Pure Silver Subject: [pure-silver] Re: Unknown film Thanks for the several answers. Looks like an experimental project for my 8X10 pinhole camera. Marty