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C Mount CCTV Securiy Camera Lens


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#1 Bill Totolo

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Posted 19 April 2007 - 01:46 AM

What are the odds that this lens could be compatible with a Beaulieu R16 C mount?
Do TV lenses and CCTV lenses cover 16mm?
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#2 Zachary Vex

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Posted 19 April 2007 - 03:03 AM

CCTV lenses are usually labeled with 1/3 indicating the chip size, which is quite small. These lenses have very limited coverage. There is another designation, CS, which I believe (but I'm not certain) indicates an alternate (shorter) distance to the chip than standard C. Visually, comparing a CCTV camera's mount to my Bolex, it looks like the distance to film on the Bolex is about 1/2" and the distance to chip on the CCTV is about 1/4".

I would guess that CS lenses designed for CCTV cameras will simply not focus properly on movie cameras. When you see a lens with no glass, you can be sure it's useless for film.
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#3 Brian Drysdale

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Posted 19 April 2007 - 08:00 AM

Years ago I shot some B &W 16mm on a Bolex using a couple of wide angle CCTV lenses - they'd have used a tube on the video camera. They were OK with B&W but terrible shooting colour.
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#4 Bill Totolo

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Posted 19 April 2007 - 08:15 AM

Thanks for the feedback. I'll stick to my Canons.
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#5 Leo Anthony Vale

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Posted 19 April 2007 - 01:36 PM

CCTV lenses are usually labeled with 1/3 indicating the chip size, which is quite small. These lenses have very limited coverage. There is another designation, CS, which I believe (but I'm not certain) indicates an alternate (shorter) distance to the chip than standard C. Visually, comparing a CCTV camera's mount to my Bolex, it looks like the distance to film on the Bolex is about 1/2" and the distance to chip on the CCTV is about 1/4".


A 1" CCTV lens will cover S16. That format has a 16mm diagonal. Some of them are quite decent, Canons and Cosmicars. 'Lykliga Skitar', the first S16 movie, used Canon CCTV lenses.

2/3" cover an 11mm diagonal. A bit smaller than a 16mm frame, a tad larger than the TV safe action area.
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Opal

Glidecam

Rig Wheels Passport

Technodolly