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CCTV C-mount lens on micro 4/3
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PostPosted: Thu Feb 11, 2010 8:42 am    Post subject: CCTV C-mount lens on micro 4/3 Reply with quote

i can use these cctv lenses

http://www.pentax.jp/japan/imaging/security/cctv/05.html

on micro 4/3 cameras?

thanks.


PostPosted: Thu Feb 11, 2010 9:29 am    Post subject: Reply with quote

Of course you CAN use them since they hace c-mount, BUT since they are made for max. 2/3" sesnors, they will only cover a fraction of your camera's sensor. Don't forget that you need a 21mm image diameter for full sensor coverage!!


PostPosted: Mon Mar 01, 2010 10:43 am    Post subject: Reply with quote

so, lens for 1-inch CCD type work with micro 4/3?

like this:
http://www.bhphotovideo.com/c/product/46335-REG/Schneider_21012101_Xenon_25_mm_f_0_95.html


PostPosted: Mon Mar 01, 2010 3:49 pm    Post subject: Reply with quote

You got it!

I came across some lenses for 1/3 CCTV, these were CS mounts with a slightly shorter register than C mount and only good for macro work.


PostPosted: Mon Mar 01, 2010 5:05 pm    Post subject: Reply with quote

did you read about this lens?

http://noktor.com/

it's smelling of cctv

i find this that was quite similar:

GMY45095MCN

http://www.midopt.com/lenses_fixedf095.html


PostPosted: Tue Mar 02, 2010 1:30 am    Post subject: Reply with quote

Did you check out the other discussion on the Manual Focus Lens section?

I agree, there are several Japanese companies making fast CCTV lenses and this looks like their own OEM version with a m4/3 mount.

http://43rumors.com/category/rumor/page/3/


PostPosted: Fri Mar 05, 2010 10:12 am    Post subject: Reply with quote

how about this?

Senko VFA1213 12.5mm F1.3 $312.00


PostPosted: Fri Mar 05, 2010 2:50 pm    Post subject: Reply with quote

The 1" format it should be ok. I noticed this too:

VFA5095H 50.0mm F0.95 Manual $897.00

Specs just like the Noktor Wink and even more expensive!!


Last edited by wilson.c on Sun Mar 07, 2010 7:45 am; edited 1 time in total


PostPosted: Fri Mar 05, 2010 4:51 pm    Post subject: Reply with quote

There are two Pentax 25mm 1.4, one 2/3, another 1'' format. Both around less than $100, the 1'' one is back ordered in B&H though.

There is a review here, not sure if this is 2/3 or 1''

http://www.efixmedia.de/photography/cosmicarpentax-251-4-c-mount-tv-lens-review/

With a tip from apicius9 I am getting the 1'' soon Razz


PostPosted: Fri Mar 05, 2010 4:55 pm    Post subject: Reply with quote

O and here's a google doc made by some other forums' member on the coverage of some C-lens

http://spreadsheets.google.com/pub?key=p9kkgjwEQQQ-HJwvNDobeEw

Looks like most shorter than 25mm do not have full coverage of the m4/3 sensor


PostPosted: Fri Mar 12, 2010 3:52 pm    Post subject: Reply with quote

Just got a Cosmicar 25mm 1.4 from evilBay for $40+. Waiting for delivery.


PostPosted: Fri Mar 12, 2010 5:50 pm    Post subject: Reply with quote

wilson.c wrote:
The 1" format it should be ok. I noticed this too:

VFA5095H 50.0mm F0.95 Manual $897.00

Specs just like the Noktor Wink and even more expensive!!


People getting like idiots about these lenses...


PostPosted: Sat Mar 13, 2010 1:34 am    Post subject: Reply with quote

Saw some shots from the Noktor

http://www.flickr.com/photos/theleggett/4396089064/in/set-72157623527995554/

The lens' bokeh doesn't suit me and seems very low contrast when there's light sources in the picture as in some shots within the series above.

I would rather save and pay a little more money to buy a CV Nokton 50/1.1 instead.

It was a pretty nice idea anyway, taking a lower cost TV lens and re-market is as a high-end manual m4/3 lens.


PostPosted: Mon Mar 15, 2010 4:55 am    Post subject: Reply with quote

There's a poll on the Noktor site asking which lens mount they should make next. EF is winning by a landslide. How they plan to cover a FF sensor with these should be interesting.