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Topics - Bob Howland

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EOS-M / Why no Sigma DN lenses for Canon M?
« on: January 29, 2013, 01:52:47 PM »
Sigma makes 19 f/2.8 and 30 f/2.8 lenses for Micro-4/3 and Sony E-mount lenses and just announced a 60 f/2.8 lens. The Canon M-mount uses the same 18mm flange distance as the E-mount and a sensor size between M43 and E-mount. The lens protocol is almost certainly very similar to the protocol used for EF and EF-S lenses. So why haven't they introduced these lenses for Canon?

Any guesses? Oh, by the way, I just e-mailed Sigma with the same question. I'll let you know if/when they reply.

Lenses / Were EF-S lenses a bad idea?
« on: September 18, 2012, 11:24:39 AM »
A Canon APS-C user who want to upgrade to a 6D cannot use his APS-C lenses on his new camera. In contrast, a Nikon APS-C user who wants to upgrade to a D600 can use his DX lenses on his new camera and the camera uses some sort of sensor cropping to emulate DX, at about 10.7MP. Interestingly, third party lenses (i.e., Sigma, Tamron, Tokina etc.) can be mounted on Canon FF bodies but those bodies have no way or recognizing them as not being FF lenses.

Do suppose Canon regrets introducing the entire EF-S lens concept?

Third Party Manufacturers / Is anybody else drooling over the new Fuji X-E1?
« on: September 07, 2012, 09:32:24 AM »
That is the style camera that Canon should introduce for their M system, together with some very high quality but small and fast zoom and prime lenses.

Also, is it my imagination or does the M-system lens mount have one more pin than the EF lens mount, perhaps for controlling lens zoom from the body?

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