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Author Topic: 16mm moviecamera with M42 mount  (Read 470 times)
LarryD
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« on: August 29, 2006, 10:18:57 PM »

Here you all go put that 500mm on this thing and make moon movies.

http://cgi.ebay.com/KRASNOGORSK-3-Popular-Russian-Movie-Camera-Kit-BOX_W0QQitemZ200022313629QQihZ010QQcategoryZ4691QQtcZphotoQQcmdZViewItem

Larry
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ImageMaker
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« Reply #1 on: August 30, 2006, 08:57:41 AM »

While the mount might be compatible with M42 lenses in terms of threads, it's almost certainly a shorter film to flange distance and wouldn't focus, at any distance, with (for instance) a 50/1.4 Super Takumar.  Take a look at where the film spool bulge is in the top of the body, relative to the mount flange -- looks like the same film to flange distance as a C mount, IIRC 16 mm.
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LarryD
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« Reply #2 on: August 31, 2006, 04:41:55 AM »

ImageMaker

But how are we to know how the film is thread inside the camera. it may be threaded through the movement gears to put the flange distance to the correct position. If I had a few extra  $s I would get it just for fun because I have about 400 feet of 16mm film and loading it in the minolta 16s I bet it will last forever.

Larry

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ImageMaker
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« Reply #3 on: August 31, 2006, 01:06:04 PM »

Quote from: LarryD;50143
ImageMaker

But how are we to know how the film is thread inside the camera. it may be threaded through the movement gears to put the flange distance to the correct position. If I had a few extra  $s I would get it just for fun because I have about 400 feet of 16mm film and loading it in the minolta 16s I bet it will last forever.

Larry

Larry

Larry, without examining the camera, we don't know for certain, but it wouldn't make much sense to make a 16 mm camera that couldn't use standard C mount lenses (which, IIRC, have a film to flange of about 16-17 mm) with an adapter.  Use of Pentax-mount M42 lenses on this camera might be as simple as owning the correct length extension tube, of course.  It's also possible that 42 mm is a standard mount for 35 mm movie cameras (I don't know for sure what the A and B mount dimensions are; C is the 16 mm standard and D is standard on a lot of video cameras with 1/3 inch sensors), but again, *especially* in the Soviet Union, it would have made little sense to make a 16 mm camera to use 35 mm cine lenses, which typically cost 5-10 times what comparable quality lenses for 16 mm cost (and don't come in short focal lengths relative to the 16 mm frame).

So, what I suspect is that they made the mount and one lens with the camera, and sold an adapter tube to mount M42 SLR lenses for use in long-lens applications (a 50 mm is a little over 3x "normal" for standard 16 mm film) along with an adapter to put C mount lenses on the camera -- or, as has often been the case with specialty cameras made in the Soviet Union, they had great plans and instead the line was folded with very few produced (like the two attempts to make Polaroidovs).  I'm no cine expert, but I'd never heard of Krasnogorsk making a cine camera.  OTOH, this seller's got *three* of these, in various conditions and with BIN ranging from $700 to $900.  Leftovers from KGB-TV?  Wink

If it *is* the same film to flange as my Spotmatic, it might be worth the price of entry for that lens...  :eek:
« Last Edit: August 31, 2006, 01:09:06 PM by ImageMaker » Logged

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LarryD
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« Reply #4 on: August 31, 2006, 03:33:39 PM »

That seller always seems to get oddball FSU stuff. a while back he had the Soviet polaroids there. KGB-TV hmmmmm KGB Express Don't leave home.

Larry
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Kin Lau
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« Reply #5 on: September 01, 2006, 11:19:11 AM »

If you want to just mount a 500mm or any M42 lens on that camera, you could just add an extension tube.

Using that lens on a Spotmatic will be a whole different ballgame.
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« Reply #6 on: September 02, 2006, 09:36:54 AM »

Academic anyway, Kin -- I haven't got the $800 to buy it.  And you're right, if the film-to-flange is too short, you can (worst case) remachine an existing extension tube, or cut two and bond them together (*very* carefully, for both distance and alignment are critical) to make one.  That lens on a Spot wouldn't be a problem at all, *if* it's the same film-to-flange as an M42 SLR.  If not, never mind -- but we'll probably never know unless someone can find a page specific to the Krasnogorsk-3 cine camera...
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