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Old August 4th, 2011, 07:41 AM   #1
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new EF adapter coming soon

After many discussions with this company who was very interested,
they decided to produce an EF adapter for the F3 with buil-in iris.

KIPON will begin to sell the first lot adapters for SONY F3 pro video-KIPON adapter

It will be selling in 10 days i hope...
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Old August 4th, 2011, 09:29 PM   #2
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Re: new EF adapter coming soon

Good luck to Kipron then... I think the holly grail for SLR lenses adaptor would be a device that brings better and more precise iris control and a way to tap into the F3 electronics so such things as lens info, built-in stabilizer could be supported. I suppose this is quite complexe to do but one can only hope for a better world.

Take care,

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Old August 5th, 2011, 08:18 AM   #3
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Re: new EF adapter coming soon

Tony are you saying the adapter will have an iris in it instead of controlling the iris in the lens?
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Old August 5th, 2011, 08:01 PM   #4
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Re: new EF adapter coming soon

I hear last week via a Sony contact that the F3 LCD tube shown at NAB this year will be shipping in a few months.
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Old August 6th, 2011, 10:17 PM   #5
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Re: new EF adapter coming soon

The Kipron's for other cameras get mixed reviews. The iris is in the wrong place in the optical path so tends to create a lot of vignetting rather than proper exposure control.

I'll stick with Nikon lenses with proper iris rings.
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Old August 8th, 2011, 01:53 AM   #6
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Re: new EF adapter coming soon

The Kipon representative told me they designed a built-in iris bigger than their former EOS-m4/3 converter.
And this is aimed at those who already have Canon lenses who don't accept removing the lens to change the iris without seeing the effect and exposure.

If i had the nikon lenses i would already be happy.

Fingers crossed...
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Old August 9th, 2011, 01:59 PM   #7
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Re: new EF adapter coming soon

Doesn't matter how big you make it, it's still in the wrong place. Think about what happens to the projected image from a lens when you pass it through a hole in a piece of card? It vignettes of course. Try shining a video projector through a hole cut in a piece of card.

If adding an iris ring behind the lens really worked, the camera manufacturers would have built it in to the camera bodies, making lenses simpler and much cheaper, sadly it doesn't work that way.
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Old August 12th, 2011, 10:28 AM   #8
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Re: new EF adapter coming soon

Quote:
Originally Posted by Alister Chapman View Post
The iris is in the wrong place in the optical path so tends to create a lot of vignetting rather than proper exposure control.
Yes, can't see how it would be otherwise. Very odd.
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Old August 18th, 2011, 02:49 AM   #9
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Re: new EF adapter coming soon

Here's the picture of the prototypei received from them.
The canon adapter is the first prototype (hence the dirt on the iris) and will be on sale at the end of the month.
The Nikon is already on sale.

PS: even if it vignettes, i prefer to have an iris to see what it looks like before taking-off the lens.
And many times i tend to add vignettes in post.
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Old August 18th, 2011, 10:05 AM   #10
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Re: new EF adapter coming soon

This is not a good design. it dosen't control the aperture AT ALL. It just vignette. I can't understand what they were thinking when they designed it. It can't work. I have one for the FS100, and the iris is useless with any lenses.
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Old August 18th, 2011, 02:08 PM   #11
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Re: new EF adapter coming soon

Sorry to hear Jean-Phillipe that you had to experience a poorly designed product.
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Old August 19th, 2011, 03:05 AM   #12
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Re: new EF adapter coming soon

But if it costs half the MTF or Adaptimax and you have the option to "preview" the aperture...
why should i get the more expensive options?
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Old August 19th, 2011, 09:03 AM   #13
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Re: new EF adapter coming soon

Maybe because they work
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Old August 19th, 2011, 11:08 AM   #14
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Re: new EF adapter coming soon

It can't even preview the aperture. The center stay overexposed while the edges vigniette. Trust me, it's completly unusable.
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