Spooling partly exposed 120

[kansalliskala]

I mean I've exposed 2 frames Kodak slide film and want to switch to another camera. (Because TLR is so damn big and folder is small etc etc .. )

I'm planning just to roll the film to spool entirely, then move it to folder. Roll it entirely to takeup and then start again from frame 5. I'll miss 2 frames but I don't know how the cutting machine does the cuts, by the first frame or by some other mechanism?

Any comments? Possible problems? Should I just expose the first 2 frames also because they aren't very precious?

[Farside]

I'd use a changing bag and simply roll the film back onto its spool.
The START line on the film will (probably) be in the same position in both cameras, so it should be fine if they're both 6x6 or 6x9, etc. You'd get away with just missing one frame but personally I'd just start from frame 3.

[Nesster]

+1 on that advice.

Do your cameras use the red window method, and are they the same format? The only start frame issue I can think of is if you are going from 6x6 to 6x9, say.

[kansalliskala]

TLR has start line and mechanism. Folder has the red window. Thank you for comments.

Actually I been re-thinking this camera question. I'm going to a wedding. First I thought folder would be handy, just put it in your pocket. Then I thought that TLR might even be less noticable, in the church especially where you don't have to hold it up on your face.

[alex]

This is something I've occasionally wanted to do, but never tried. I'd thought of getting an old roll of backing paper from a B&W film I'd processed, winding it on to frame 1 in camera A, opening the back and marking on the backing paper the film gate, then transferring the roll to camera B, winding on to frame 1, and opening to mark the film gate again, and see how they line up.

[Eugen Mezei]

The problem is not to fit the frames. The biggest problem is you will wind the paper different than the film. As a result the paper will bulk.
Better finish the film in your camera and put another roll in the other camera. Come on, a roll of 120 film is not so expensive.