Abnormal frame spacing
I need to know, do the machines in most high volume autolabs automatically cut negatives, or are they still done by hand? I have a roll of c-41 ready to be processed that I had to stop mid-roll, rewound and removed from the camera fdor a while then put it back in and advaced back past where it was, which most likely means the frame spacing isn't going to be uniform at some point. I only question the place where I dump my color stuff off locally because if I ever try to squeeze a few extra frames onto a roll, the very last one will be cut right in half everytime. I don't imagine that any large semi-competant lab would be doing that if they cut by hand. I'd hate to have a machine keep assuming a uniform distance and chop every 5th image in half on the last 2/3rd of the roll.
The last local lab that isn't a wal-* that I know of in a reasonabel driving distance closed up about 2 years ago, so I'm pretty much stuck with mailers, or buckling and going to wal-greens.
The one time I put some weirdly spaced 35mm through a mini-lab it came back un-cut in a film canister. They'd spotted there was something weird going on, and rather than mess it up, did it dev only (acutally I think they gave it back to me for free!).
If in doubt I'd just ask them not to cut it.
In my experience (working at labs) film was cut manually on a little machine after printing (colour neg in tear off protectors) or with scissors (b&w in print file pages).
Even odd spacing problems etc were no problem, even with a slide mounter. The lab technician has to be on the ball, that's all...
I always get my negs uncut, because I don't like them cut in 4 frame strips
I like them in 5 frame to fit in a page for a loose leaf binder for ease of organizing and archiving.