CANON LENS & NIKON G LENS got adpter with Aperture control from Kipon

As we all know that Canon Lens got no aperture control, neither does those latest Nikon G lens,

however Kipon have got idea with aperture built in aperture!! that right, with very around cinema like aperture control.

Peice unknow yet, will keep you guys updated when I got more info, adapter for both Canon and Nikon lens to M4/3 & NEX mount.

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Ah! That's actually quite clever! And saves the trouble of having lenses "de-clicked". I'm really curious to see tests shot with this. I wonder how different it's going to look at smaller apertures from the native lens?
 
I read somwhere once that the location of the aperture is critical to the lens performance.... I.E. the aperture needs to be in a specific location in the order of lens surfaces inside the lens assembly. This design puts it external, at the very end. I wonder if this solution compromises the design of a lens and its quality....
 
I was wondering that myself.

I read somwhere once that the location of the aperture is critical to the lens performance.... I.E. the aperture needs to be in a specific location in the order of lens surfaces inside the lens assembly. This design puts it external, at the very end. I wonder if this solution compromises the design of a lens and its quality....
 
Remember when we used to shoot with 35 adapters? :-)
Technically its similar. You have a 35 lens with iris then image passes another iris of the camcorder before the image hits the sensor... hhmmm.. perhaps there'll be tradeoffs, perhaps its negligible.
 
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Remember when we used to shoot with 35 adapters? :-)
Technically its similar. You have a 35 lens with iris then image passes another iris of the camcorder before the image hits the sensor... hhmmm.. perhaps there'll be tradeoffs, perhaps its negligible.

Interesting, so you are saying I could have the lens at f/2 (for example) and then with this adapter reduce the light intensity further WITHOUT increasing my depth of field further?
 
Paul,

Not exactly, but it could present unique possibilities, the camcorder used with 35 adapter have small sensors thus any play with their iris doesnt usually produce the shallow DOF, thus the use of a 35adapter in the first place. The DSLR or "mirrorless DSLRs" already have big sensors, so I'm curious as well how this plays out.
 
My lenses:
Canon 28-135 F3.5 5.6 IS kit lens
Tokina 11-16mm F2.8 Tokina
Sigma 30mm F1.4
Bower 85mm F1.4 (FULL MANUAL)

The other shooter I work withs lenses:
Canon 50mm F1.8
Canon 70-300 IS zoom
Canon 10-22mm
Canon 16mm-?? (Don't remember the upper range)

We use all of these.
 
Ok. I have 4 Panasonic m4/3 lenses now, a bunch of Nikon mount lenses (including the Tokina 11-16 which is GREAT) and 3 Nikon mount adapters and the Canon EF 24-105mm F/4.0 L USM iS. I will sell the 7D but keep the Canon lens and wait for the Birger so that I can try it on the AF101. Many claim that Canon lenses are better than Nikons and I was first planning on getting Zeiss Nikon mount primes but now with the Birgen it makes more sense to get Canon mount lenses.
 
Many claim that Canon lenses are better than Nikons.[/QUOTE said:
Many people would dispute this claim. It is common knowledge that Canon L series still lenses vary considerably in optical quality while Nikon compatible professional lenses are more expensive but have a more consistent optical quality. Canon make great lenses particularly telephoto, but my Canon friends all test before they purchase.
 
CineStill... my statement was risky I guess. Personally I'm a Nikon fan, I shoot stills with Nikon bodies only but that's because I prefer the Nikon ergenomy to that of Canon. I have a lot of Nikon mount lenses and hope Birger will come with a Nikon adapter simular to the Canon adapter soon but I guess it's technically impossible otherwise they would have made one for the Red already.
 
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