@karas, I've updated my previous post at http://www.personal-view.com/talks/discussion/1925/c-mount-lenses-for-m43/p4#Item_83 with inner diameter measurements taken at the C-mount flange. The Big_is adapter is the widest, though thicker than the Henry Digital Super Thin.
I finally figured out how to get infinity focus! I used the 1/2" Rainbow H6x8-II, and now it becomes a 1" Zoom Lens! (new zoom range is 16-96mm f2)
@balazer, could you please measure the inner diameter of "henry-digital super thin" adapter? I found the measurements for the hawks adapter http://www.ebay.co.uk/itm/320984665149 (37.2mm / 39.2mm), but it might be too small for my lens.
Basically, I've got a Computar 12.5/1.3 lens, but it has a different design than the one reviewed on the Internet:
http://cjeastwd.blogspot.co.uk/2009/06/adapting-lens-to-fit-mount.html
Mine has an aperture ring in front of the focus ring, and the rear part is larger: 40mm in diameter as opposed to 38mm. I've done the stop-screw removal mod, but the lens is just too far from the sensor when mounted using my current adapter, which is 37mm: http://www.ebay.co.uk/itm/C-16mm-Lens-To-Micro-M-4-3-43-M4-3-M43-Mount-Adapter-/320543741746
Here's the proof. Rainbow 2/3" 11.5-69mm f1.4 Lens with 2x extender, zoomed in. Still need to figure out infinity focus, but it covers the sensor with just slight vignetting. Not the greatest lens for photos, but it's a start for video!
For reference, here are the most useful C-mount to m43 adapters I've found:
henry-digital super thin: 0.98 mm flange thickness, 37.35 mm ID
Fotga E60053 new style: 2.84 mm flange thickness, 37.60 mm ID. Seller photos not accurate. See my photo.
henry-digital 2-in-1 m42: 5.24 mm flange thickness, 37.50 mm ID
Big_is: 2.20 mm flange thickness, 37.70 mm ID. Seller photos not accurate. See my photo.
Is this the official C-Mount thread? I saw the BMCPC thread getting a tad cluttered so I thought I post my question here.
8-40/1,8 Schneider Variogon. Has anyone heard anything of this lens? I've found it in my local camera-shop. It's a C mount but I don't have an adapter so I can't test it. Will it cover a BMCPC's sensor? Anything you know of this lens would be really helpful. It costs cirka 130 dollar
The Rainbow 2X Extender on the 2/3" S6x11 Lens DOES COVER the entire sensor! Proof to follow. Now trying to figure out how to focus to infinity!
I found this and it seems that it is not that easy as it might have looked at the first sight http://eclair16.com/lenses/super-16-compatible-lenses/
I'm guessing that most 2x c-mount extenders are only designed to cover 2/3" or 1". I tried the Fujinon HE20-1, and it did not come close to covering 4/3".
Anybody know if a 2X C-mount extender will effectively turn a 2/3" lens to a 4/3 lens? Will it eliminate vignette altogether?
This brand new 25mm f/1.4 TV lens (from Hong Kong, it costs $27) covers whole GHx sensor and has only a bit of vignetting and it is delivered with simple adapter for MFT cameras:
http://www.ebay.de/itm/230833600934
Yet, I didn't like it so much. One has to use its mount screw to focus, and it has visible lateral CAs. The image is otherwise OK. I wouldn't recommend it to anybody else except people with extremely tight budget.
Just look at the back side. It is too big. It won't fit without modification.
Another interesting lens - Fujinon TV Z - 10.5-147mm f1.9, 2/3" C-Mount.
Unfortunately, no any info about this model and its compability with GH1/GH1.
Still no one using Sony 16-32mm f/2.5 c-mount lens?!?
It looks very interesting and rare lens.
Fujinon "D" lenses are 1/2" c-mount. They just about cover the GH2's 1080 ETC mode. But I'm pretty sure that lens will need modification to achieve infinity focus and be parfocal on m43, because the rear of the lens is too big to fit in the recess of a c-mount to m43 adapter.
Does anyone know and have experience with Fujinon CCTV Lens D14x7.5B (7.5mm-105mm)?
Also any info about Sony C Mount Zoom Lens 16-32mm f/2.5?
Do those lens cover the sensor of GH1/GH2?
Any comments and tests?
This isn't my best lens, but it is my biggest. It weighs 6.5 pounds and the filter threads are 118 mm in diameter.
My cine-modified Rainbow H6x8-II: using Wide Open Camera's zip tie gear belt for focus and a Lanparte gear ring for zoom. C-mount to Micro 4/3 adapter permanently attached with all 3 screw holes aligned!
This is not the Schneider Cinegon 1:1.8 for Arriflex obviously. Which camera was it used for ?
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