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Adapt Angenieux 12-120 to cover BMCC (Blackmagic Cinema Camera 2.5K)


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#1 Vadim Joy

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Posted 30 January 2014 - 11:07 AM

Hi, I have an Angenieux 12-120 in cameflex mount which I haven't used for 5 year since I sold my Eclair. I haven't sold this lens then, and I won't now. I know there are extenders made by Angenieux that can enlarge image circle from 16mm to 35mm film format. Somebody even told me that Kubrick used one of those extenders for his films made by CP. The problem is that I looked up on the Internet but I can't find anything. Any help would be appreciated. Thank you.


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#2 Zac Fettig

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Posted 30 January 2014 - 11:45 AM

In theory you could use a spinning ground glass adapter (P&S Technic or Letus, etc.), but why? Why not just use a lens designed for 35mm?


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#3 Vadim Joy

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Posted 30 January 2014 - 11:53 AM

I "grew up" with that lens, Zac. I use other zooms as well but it just feels better. Any links? 


Edited by Vadim Joy, 30 January 2014 - 11:53 AM.

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#4 Zac Fettig

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Posted 30 January 2014 - 01:12 PM

Sorry, I'd thought the 2.5K had the same sensor size as the 4K (Super 35). The sensor is only 18.1mm diagonal. So it'll likely vignette at the wide range (below 30mm maybe?).

 

http://www.ebay.com/...1-/320928782733

No idea if they're good or not.

 

This above link assumes you got one in M4/3. AFAIK, there is no Cameflex to EOS adapter out there.

 

http://en.wikipedia....f-field_adapter

If you want to go that route, it'll work regardless of mounts, but badly.


Edited by Zac Fettig, 30 January 2014 - 01:16 PM.

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#5 Vadim Joy

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Posted 30 January 2014 - 01:16 PM

just did a quick test 


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#6 Zac Fettig

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Posted 30 January 2014 - 01:43 PM

Looks great! Was the lens just placed in front of the camera, without a mount?


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#7 Vadim Joy

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Posted 30 January 2014 - 01:51 PM

No, I happened to have cameflex to m4/3 adapter already. It looks good but the only way to avoid vignetting at the moment with this sensor is to put files on 720p timeline. Or, to shoot RAW and put on 1080p timeline for full hd. In other words, to crop it. 


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#8 Zac Fettig

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Posted 30 January 2014 - 02:45 PM

I see. It looks great! Shooting with a DOF adapter would solve the vignetting issue, but the picture quality would go down; even worse than stretching the picture.


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#9 Vadim Joy

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Posted 30 January 2014 - 03:00 PM

Maybe one day somebody will make some sort of adapter for old cinema lenses. That marked is huge. 


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#10 Dom Jaeger

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Posted 30 January 2014 - 09:00 PM

You can find 16mm focal extenders, usually 2x or 1.4x, but ones in Cameflex mount will be rarer. Here's a PL mount one:

 

http://www.ebay.com/...=item417c25054f

 

A doubler will generally cost you 2 stops, 1 stop for a 1.4x extender. Some have more room between mount and optics than others. An older Bayonet mount one like this by Optex for example:

 

http://www.ebay.com/...=item1e85824a55

 

will foul on the rear element of a 12-120. So check the clearance before investing in one if you find anything in Cameflex mount. 


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#11 Vadim Joy

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Posted 14 February 2014 - 07:31 PM

Tha

 

You can find 16mm focal extenders, usually 2x or 1.4x, but ones in Cameflex mount will be rarer. Here's a PL mount one:

 

http://www.ebay.com/...=item417c25054f

 

A doubler will generally cost you 2 stops, 1 stop for a 1.4x extender. Some have more room between mount and optics than others. An older Bayonet mount one like this by Optex for example:

 

http://www.ebay.com/...=item1e85824a55

 

will foul on the rear element of a 12-120. So check the clearance before investing in one if you find anything in Cameflex mount. 

Thanks for the links. 


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#12 Vadim Joy

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Posted 17 February 2014 - 03:22 PM

SOLD


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