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Wide-angle lens distortion


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#1 Bill DiPietra

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Posted 18 November 2006 - 03:03 AM

I am considering buying an additional wide-angle lens for my ARRI 16 S/B. The widest one I have on there right now is a 16mm. I would like a slightly shorter focal length without getting any distortion on the edges. Would that be a 10mm, a 12mm? At what focal length does the distortion begin to appear...?

Thanks for any help.
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#2 John Mastrogiacomo

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Posted 18 November 2006 - 03:32 AM

I am considering buying an additional wide-angle lens for my ARRI 16 S/B. The widest one I have on there right now is a 16mm. I would like a slightly shorter focal length without getting any distortion on the edges. Would that be a 10mm, a 12mm? At what focal length does the distortion begin to appear...?

Thanks for any help.

I got an 8mm Optar Illumina and a 5.7mm Kinoptik that don't distort on the edges. I think every lens is different. One brand of an 8mm lens may distort while another brand may not. :) :)
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#3 Laurent Andrieux

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Posted 18 November 2006 - 06:33 AM

Exactly. It's a problem of lens construction, (the place of the iris within the optics) that is more difficult to deal with when the focal length gets short.

But there isn't a focal length at wich it suddenly appears. A cheap 35 mm may distort. The 5.7 kinoptik doesn't distort much...
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