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07/23/2005 01:10:52 AM · #1 |
does anyone know if there is a circular fisheye that will create a perfect circle on a 1.6 crop canon sensor? i read/saw somewhere that the sigma 8mm circular fish's circular image gets cut off by the crop factor of the canon d60 sensor. so in other words, does the d60 have a 1.6 crop factor?
better yet, does anyone know how to produce a circular fish image from a rectangular picture in photoshop?
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07/23/2005 01:24:59 AM · #2 |
yes the d60 has the 1.6 crop factor, the cameras with that much crop factor isnt the best choice for fish eyes
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07/23/2005 04:41:38 AM · #3 |
Richard Rosenman's Lens Corrector Pro will let you make fisheyes of rectangular shots, and a lot more besides.
Robt.
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07/23/2005 07:32:26 AM · #4 |
there's an article about this here: //www.nearfield.com/%7Edan/Photo/wide/fish/
Some cheap options are Peleng 8mm or Zenitar 16mm. Plenty of reading about those lenses by googling them. |
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07/23/2005 10:05:47 AM · #5 |
The shortest focal length available in a fisheye is 8mm. On a 1.6-crop camera, you won't get the full circle. You get about 170° horizontal FoV, and about 110° vertical. Even on a 1.3-crop cam, some will be cut off at top & bottom, leaving about 145° FoV.
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