It was great to find this message board...what an excellent resource! Anyway, I'm curious about the proper procedure for submitting to a lab exposed 16mm film which was housed inside a magazine with a collapsible core on the take-up side. I've worked with mags that use plastic cores on the take-up side but have never unloaded exposed film from a mag with a collapsible core.
I read somewhere that after unloading the exposed film and placing it inside the plastic bag, it's customary to drop a plastic core inside the bag in the center of the film reel before canning it. Apparently the diameter of the collapsible core is slightly larger than that of a plastic core, so the plastic core should drop in easily. Not having canned exposed film coming off a collapsible core, though, I'm not sure, so I thought this would be an ideal place to ask. Also, should a note be made on the can that the film is not tightly wound onto a plastic core?
On a related note, do labs usually frown upon exposed film that was removed from a mag with a collapsible core? It seems to me that when preparing the film for processing in the darkroom, the lab would want the film tightly wound onto a core for feeding into the processing equipment, but perhaps it really doesn't make a difference.
Thanks to anyone who can help!