August 20, 2014, 01:07:56 AM

Author Topic: Sigma Releases Optimization Pro v1.2.0 and USB Dock Firmware Update  (Read 2695 times)

wickidwombat

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Re: Sigma Releases Optimization Pro v1.2.0 and USB Dock Firmware Update
« Reply #15 on: May 29, 2014, 09:39:09 AM »
Fwiw, I measured with a tape measure when I calibrated the 50 Art, and as far as I could tell, the measured distance to the sensor matched the distance scale spot on.

ditto
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Re: Sigma Releases Optimization Pro v1.2.0 and USB Dock Firmware Update
« Reply #15 on: May 29, 2014, 09:39:09 AM »

privatebydesign

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Re: Sigma Releases Optimization Pro v1.2.0 and USB Dock Firmware Update
« Reply #16 on: May 29, 2014, 10:15:35 AM »
Fwiw, I measured with a tape measure when I calibrated the 50 Art, and as far as I could tell, the measured distance to the sensor matched the distance scale spot on.

ditto

Lens focus distance scales are normally pretty accurate, their dof scales are normally next to useless, especially with modern short throw focus AF lenses. But the point about a lens being designed for ff and used on crop cameras making the aperture/dof numbers completely wrong is an interesting one and maybe a reason most lenses don't have them now.
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Re: Sigma Releases Optimization Pro v1.2.0 and USB Dock Firmware Update
« Reply #16 on: May 29, 2014, 10:15:35 AM »