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jan normandale
Joined: 13 Nov 2007 Posts: 30 Location: Toronto Canada
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Posted: Tue Oct 27, 2009 7:46 pm Post subject: Formula for calculating the FoV of lenses? |
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I know we all talk about image circles and lens sizes but I'd like to calculate the field of view of lenses. I went to our FAQ's and most of the formulae regard hyperfocals, image circles etc
Can someone steer me to a set of formulae for determining FoV for various lenses using a 4x5 back? Better still would be one of those websites that have calculators built in.
thanks Jan |
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45PSS
Joined: 28 Sep 2001 Posts: 4081 Location: Mid Peninsula, Ca.
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Posted: Tue Oct 27, 2009 8:02 pm Post subject: |
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See fcalc @ http://www.tangentsoft.net/ _________________ The best camera ever made is the one that YOU enjoy using and produces the image quality that satifies YOU. |
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Dan Fromm
Joined: 14 May 2001 Posts: 2120 Location: New Jersey
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Posted: Tue Oct 27, 2009 9:40 pm Post subject: |
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If the lens covers 4x5, the angle that the film will see, in Excel, is =2*degrees(atan(76/f)), where f is the lens focal length in mm. |
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jan normandale
Joined: 13 Nov 2007 Posts: 30 Location: Toronto Canada
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Posted: Wed Oct 28, 2009 12:26 am Post subject: |
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45PSS, thanks for the link it looks like a good one
Dan, I had a hunch I'd hear from you. Thanks for the XL formula. How've you been? Did you get any photography in this summer? |
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