AZ ChopperCam
Posts: 20
Location: Mesa, AZ, United States
Registered: 8 Aug 2007
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Sigma 10mm entrance pupil location
Posted: 21 Jun 2008 at 2:46 GMT
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Has anyone determined the sweet spot for the Sigma 10mm (not the 10-20mm, but the prime 10mm)??
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Philip Warner
Posts: 23
Location: Austin, United States
Registered: 14 Mar 2008
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Re: Sigma 10mm entrance pupil location
Posted: 21 Jun 2008 at 15:09 GMT
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bigwade
Posts: 258
Location: Netherlands
Registered: 19 Oct 2005
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Re: Sigma 10mm entrance pupil location
Posted: 21 Jun 2008 at 18:03 GMT
updated: 21 Jun 2008 at 18:06 GMT
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93mm at the upperarm of the NN3 or NN5 works for me.
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John Houghton
Posts: 2261
Location: Hitchin, United Kingdom
Registered: 17 Jan 2005
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Re: Sigma 10mm entrance pupil location
Posted: 21 Jun 2008 at 18:21 GMT
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bigwade said: 93mm at the upperarm of the NN3 or NN5 works for me.
A useful starting point, but the position does depend on the camera as well as the lens. It only takes a few minutes to set up the head accurately.
John
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bigwade
Posts: 258
Location: Netherlands
Registered: 19 Oct 2005
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Re: Sigma 10mm entrance pupil location
Posted: 22 Jun 2008 at 22:28 GMT
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Sorry, forgot to mention the Canon 450D......
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