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Old 17th August 2012, 09:04 PM   #1
diyAudio Member
Join Date: Oct 2008
Question High resolution, wide field, C-mount lens?

I need a C-mount (or one that can fit with an adaptor) lens that will give me a 70 to 80 degree horizontal field of view on a 1/2.5" sensor (1.55 m pixels) 4096x2160 scientific camera. I think this comes out to around 3.8 mm EFL, +/- 0.2. Most wide field of view lenses are not rated for high resolution and top out around 3 MP; I need something close to 10 MP (over 160 line pairs/mm). But every manufacturer that makes high resolution C-mount sized lenses only has quite a bit narrower focal length. The closest I found is 5 mm and that doesn't give me nearly enough HFOV. I may be buying in quantity so custom is a (worst case) option. I also saw varifocal lens but usually the shortest focus is still 5 or higher. Any pointers? There's got to be someone that can make a custom lens for a decent price...
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Old 20th August 2012, 12:19 AM   #2
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Join Date: Nov 2008
There is (used to be?) Steve's Cine Service on Main St. in Vancouver. The guy could do wonders with lenses! E
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Old 21st August 2012, 05:18 AM   #3
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Join Date: Oct 2008
Thanks, I'll go talk to them.
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