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Old June 10th, 2006, 02:26 PM   #1
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Cavision's fisheye adapter

I've been looking at Cavision's fisheye adapter for mini-dv: http://www.cavision.com/optics/DV/PFA03X58.htm

and I've been wondering....what happens if I attached it onto a 35mm SLR camera instead? I know for sure the effect will be different because the adapter is meant for use with 1/3" cameras.....so how will it affect a 35mm SLR?

Thanks
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Old June 14th, 2006, 02:53 PM   #2
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what do You mean? use it with slr photocamera?

Last edited by Frank Hool; June 14th, 2006 at 11:51 PM.
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Old June 14th, 2006, 04:37 PM   #3
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im guessing one of the side effects would be possibly be that all the flaws of the glass and design will be far more noticable, as a dslr has much higher resolution then even an HD cam.
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Old June 14th, 2006, 11:51 PM   #4
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I think, You will see huge distortion and falloff in edge areas.
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Old June 15th, 2006, 09:52 AM   #5
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did i mention a company makes a decent manual control fisheye for most mounts?
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Old June 15th, 2006, 10:05 AM   #6
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Thanks Frank and Tim for replying. I was more concerned about the area of image that will be formed on a 35mm format. Would a lens designed for 1/3" cameras form only an image of that size and not be able to fully cover the 35mm area? Im thinking of using it with a Nikon lens on my SLR.
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Old June 15th, 2006, 10:34 AM   #7
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Almost all motion picture lenses project image smaller than 35mm still photography frame. In best case you get massive vignetting or you just end up with images smaller than 35mm frame.

I quess you can always buy some screw-on fisheye lens from eBay.
Or go with alternative Zenitar 16mm 2.8 fisheye lens.

Screw-on fisheye http://cgi.ebay.com/Black-WIDE-ANGLE...QQcmdZViewItem

Zenitar fisheye http://cgi.ebay.com/Lens-Zenitar-N-f...QQcmdZViewItem

T.
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Old June 15th, 2006, 10:54 AM   #8
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Imageplane size is lens main characteristic. If You use any bigger area behind Your lens theres no guarantee about anything. Same time are given in characteristics sheets vignetting and distortion dimensions. Those are directly related with imageplane size.
Something like this: the bigger is imageplane the harder is to produce(read: it takes more glass) lens which has no artiacts in edge areas.
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Old June 15th, 2006, 02:27 PM   #9
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Zulkifli, yes, if you put a lens that is meant to be used for a 1/3" sensor, then on a 35mm sensor, your only gonna see a circle in the middle of your film with the image. and it will be small. so it would be a small area in the center where you see your image, and everywhere on the film would just be black.
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Old June 15th, 2006, 03:09 PM   #10
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http://photonotes.org/reviews/zenitar-fisheye/

google it for more info, its supposed to be reasonable
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Old June 16th, 2006, 05:13 AM   #11
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Alright guys, thanks!
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