The difference is the distance between the perforations along the length of the film. Here is the Kodak specification for 16 mm.
I believe the original question was related to what kind of leader to use when coating you own film. 2R-2994—16 mm film perforated two edges with a perforation pitch of 0.2994 in. (7.605 mm), short pitch, ANSI / SMPTE 109-2003 2R-3000—16 mm film perforated two edges with a perforation pitch of 0.3000 in. (7.620 mm), long pitch, ANSI / SMPTE 109-2003 The short pitch is camera pitch and the long pitch is printer pitch. Printer pitch is longer because when the print stock is wrapped over the camera film on a contact printer it has a larger diameter. Bottom line: If you are coating leader with emulsion to shoot in a camera use short pitch. if you are making your own print stock use long pitch. For more details: http://motion.kodak.com/KodakGCG/uploadedfiles/motion/US_plugins_acrobat_en_motion_newsletters_filmEss_11_Film_Specs.pdf Sherman George On May 2, 2016, at 6:13 PM, Morgan Hoyle-Combs <[email protected]<mailto:[email protected]>> wrote: Scott, do you think I could see pictures of the two? It would help me understand the difference much better. ________________________________ From: Scott Dorsey <[email protected]<mailto:[email protected]>>; To: <[email protected]<mailto:[email protected]>>; Subject: Re: [Frameworks] 16mm Double perf clear leader Sent: Mon, May 2, 2016 12:21:30 PM It is a thing you should be concerned about if you ever intend on making a print. Use the same clear leader that you'd use for editing camera originals, not the leader you'd use for editing prints. That way you get the same pitch that camera originals normally have. That said... it is likely not difficult to modify a camera for B-wind instead of double-perf. If it's using those 50 foot magazines, there is a way to load B-wind film into them that mostly works. --scott _______________________________________________ FrameWorks mailing list [email protected]<javascript:return> https://mailman-mail5.webfaction.com/listinfo/frameworks _______________________________________________ FrameWorks mailing list [email protected]<mailto:[email protected]> https://mailman-mail5.webfaction.com/listinfo/frameworks
_______________________________________________ FrameWorks mailing list [email protected] https://mailman-mail5.webfaction.com/listinfo/frameworks
