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How many lens adapters can you use, AND


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#1 Matt Pacini

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Posted 02 November 2005 - 07:31 PM

I'm just curiuos:
When you use a lens adapter, your lens sits the proper distance from the focal plane, but what if you use TWO lens adapters?
Theoretically it should work, but I'm just not so sure in practice.

I'm wondering because I have a CP-16R with a CP-Nikon adapter.
I also have a Canon 20D with a nice new 17-85 zoom lens, and I was thinking:
"hmmm, I'll bet this would look sweet on my 16mm footage."

Problem is, I've never seen a CP-Canon adapter, so I wondered if a Nikon-Canon adapter, sitting in my CP-Nikon adapter would work?

In fact, I'm having trouble even finding an adapter to use Canon lenses on Nikon cameras. There are tons of the reverse though...

Anyway, hopefully i'll find one.
What do you guys think, will this work?


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#2 Clive Tobin

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Posted 02 November 2005 - 08:10 PM

... I'm having trouble even finding an adapter to use Canon lenses on Nikon cameras. There are tons of the reverse though...


Some combinations are not possible owing to the relative flange to film plane distance.

Other combinations are not feasible because certain lenses (i.e., Canon) won't work correctly unless they are mounted on the same brand of camera. Iris automatic linkages and whatnot have to be just right, and likely are patented to prevent others from using something compatible. Even the Canon FD manual lenses need a special little plastic part part installed on the rear to get the iris to actually stop down to working aperture.
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