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Lens Advice


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#1 John Carty

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Posted 16 November 2017 - 07:58 PM

I have the chance to get a hold of a Cosmicar C Mount TV Lens 12.5 - 75mm  F1.8 lens. My question is will this fit on to a Bolex H16 Rex 1 without any kind of a adapter? and if so how good are these"TV Lens"

 

Thanks

John

 
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#2 Samuel Berger

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Posted 16 November 2017 - 08:02 PM

I would check for fitting before ordering. A few C-mount TV lens protrude farther out beyond the screw mount making them unusable for some film cameras. I've ran into some wide angle Fujinon lenses with that issue.
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#3 aapo lettinen

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Posted 17 November 2017 - 08:06 AM

the screw mount lenght can be an issue with some lenses like Samuel said. they can most likely be modified however, especially if the mount part can be taken off easily. I modified one Canon lens with sandpaper years ago (was 1mm too long mount for Bolex RX0 ) , can also be done with for example a metal lathe, belt sander, etc. and is relatively easy to do as long as not causing damage to the threads or letting metal dust go inside the lens. the ffd can change if taking the mount off for modification but otherwise quite easy


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#4 Simon Wyss

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Posted 17 November 2017 - 01:35 PM

A few C-mount TV lens protrude farther out beyond the screw mount making them unusable for some film cameras.

 

 

Not a zoom lens, they’re of retrofocal design anyway.


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#5 Samuel Berger

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Posted 17 November 2017 - 03:56 PM

 

 

Not a zoom lens, they’re of retrofocal design anyway.

 

Yeah, that Swedish film Glückliche Exkremente (can't remember the Swedish title) I think was the first to be filmed in S16, used Canon TV lenses. But there have been posts on here saying that the Canon ones with the electronics housing weren't compatible.

 

By the way, Simon, what is a C-S mount?


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