Short pieces of old 16mm movie film in 35mm Patterson reels

[FilmCurlCom]

Hi all!

I just bought a cheap old 16mm 30m/100ft Kodachrome 25 to practice film loading with my new Krasnogorsk movie camera.

Just for fun but also to test the camera some more, I thought of the following experiment with photo reels:

1.) In the darkroom cut off a 5ft piece of the 16mm film and load on a 16mm movie daylight spool
2.) Shoot these 8 seconds at 24fps with the movie camera
3.) Unload in the darkroom and tape the 5ft 16mm film to some junk 35mm 5ft film, emulsion facing out
4.) Load that bipacked film as usual onto a Patterson reel for photo developing
5.) Do remjet removal then develop as a black and white negative film

What do you think? Any chance this could work at all?

I see a problem with the film's speed, let's assume it lost 1 stop per decade, so it's at ISO 3 now.
The camera uses 1/60s at 24fps and the lens starts at f1.9, so I played around with the "sunny 16" rule, correct me if I'm wrong;

With ISO 3, on a sunny day, I shall use f16 and 1/3s.
f16 down to f1.9 is a bit more than 6 stops, so on a bright day at f1.9 I overexpose by 6 stops at 1/3s.
So my shutter speed could go faster, 1/3s, 1/6s, 1/12s, 1/24s, 1/48s, 1/96s to finally 1/192s.

So wouldn't that mean I can use 1/60s at 24fps with that ISO 3 and have enough light still?
Otherwise I could still try to use 8fps, which uses 1/20s to let in more light.

Bernhard

 

[BAC1967]

Ive seen this done before with double 8mm film, it will be very grainy and the negative will be very dense. If you do some searching there are some recipes for developing Kodachrome as a black and white negative that may improve your results a little.

 

[Gerald C Koch]

Taping the Kodachrome down will interfere with the remjet coating removal.

 

[darkroommike]

It's actually assy to cut a Paterson reel down to 16mm/110.

 

[FilmCurlCom]

I tried the taping idea with already exposed films yesterday in light:

I just put a small piece of tape on the start of both the 35mm and the 16mm film.
I basically taped the 16mm such that on top there is the 35mm with the emulsion facing down and the 16mm is underneath, as well with the emulsion facing down/inwards.
Then I loaded my spool as usual (emulsion in) and finally checked if any parts of the 16mm emulsion side would be blocked, but it looked fine.
With regards to the rem-jet, only at the small piece where I taped the films the 16mm rem-jet is blocked, everywhere else there should be enough space for liquid to reach it.
I have a liter of the Kodak rem-jet removal at home and planned to remove as much as possible before the developer step by agitating a lot.
Then I'd develop in Rodinal and finally remove remaining bits of rem-jet after fixing, before the stabilizing, by hand.

Yes, cutting the reel would work, however I think you cannot get it back to normal anymore then and as I only want to try these steps like once or twice as a test for the camera, I'd rather not lose one of my reels.