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Old 11-22-2017, 03:37 AM   #5
Join Date: Jun 2008
Location: Tampa, FL
Posts: 5,333

Originally Posted by bigbassloyd View Post
That is correct.

Loyd L.
It's not that they won't work correctly, they won't work AT ALL.

The lens mount for EF-S is different than the EF mount. In that you physically cannot mount an EF-S lens on a full frame camera body.

This is because the distance between the rear lens element is farther back on an EF-S, and could actually come in contact with the mirror when the shutter is actuated.

You can mount an EF mount lens on a crop body camera, but not vice versa.

you will notice the EF-S lenses have a white "square" symbol on the lens and EF has a red circle, also on the camera body, this is to try to be a visual symbol that the two aren't compatible.
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