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converted Meike 3.5mm m4/3 to cmount for Bolex


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I successfully converted this Meike 3.5mm fisheye to c mount by frankensteining multiple other mounts together. I always wanted a fisheye for 16mm but my only options have been limited to a select few rare lenses that are also quite expensive, but this Meike caught my eye. I had always wondered if converting m4/3 to c mount was possible due the longer focal flange distance so I bought the lens and for $180 I figured I couldn't lose.

IMG_8031.HEIC IMG_8073.HEIC

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19 hours ago, Philip Forrest said:

This is pretty cool. How close does the rear element shroud get to your prism?

Phil Forrest

Not that close, the shroud sits almost flush with the barrel of the mount and the mount isn’t the full length of the c mount threads.

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  • 2 weeks later...

There are 4.8, 5.5, 6 and 6.5mm c mount lenses available on fleabay. All but the 4.8mm are for 1 inch sensors, close to S16mm.

The 4.8mm is on its way to me and may be for 1 inch. The distortions are impressive, but the 6.5mm is almost tolerable.

The best rectilinear, moderately affordable, extreme, wide angle lens in C mount, is the Kowa or Navitar 6mm HC series. Some second hand ones have wandered onto our fave electronic flea market. There appear unused. Some seller has compiled all the available video demonstrations of this lens, in the advert. Modesty forbids...

Brand new, the Kowa actually have a wider lens: 4.7mm F/2.4 for a mere $1,079 AUD. Unknown how it draws.

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  • 2 months later...
  • 1 month later...
On 5/23/2021 at 8:22 PM, Patrick M P Donnelly said:

There are 4.8, 5.5, 6 and 6.5mm c mount lenses available on fleabay. All but the 4.8mm are for 1 inch sensors, close to S16mm.

The 4.8mm is on its way to me and may be for 1 inch. The distortions are impressive, but the 6.5mm is almost tolerable.

The best rectilinear, moderately affordable, extreme, wide angle lens in C mount, is the Kowa or Navitar 6mm HC series. Some second hand ones have wandered onto our fave electronic flea market. There appear unused. Some seller has compiled all the available video demonstrations of this lens, in the advert. Modesty forbids...

Brand new, the Kowa actually have a wider lens: 4.7mm F/2.4 for a mere $1,079 AUD. Unknown how it draws.

I looked into those and they probably turn out great results, but are a bit expensive for me.

 

On 7/29/2021 at 6:49 AM, Marc De Acetis said:

Looks so cool! What adapters did you use to finally get to C-Mount?

Sorry I never got back to this question. Here are the links to the adapters.

https://www.bhphotovideo.com/c/product/1245026-REG/fotodiox_c_mft_lens_mount_adapter_for.html

https://www.bhphotovideo.com/c/product/889270-REG/computar_VM400_Extension_Tube_5mm.html

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