EF vs EF-S lenses

[Don Thompson]

I have a question regarding the two lenses. Do the EF-S lenses physically extend further into camera? I am not concerned about any vignetting or similar issues but only the physical differences.

If there is a physical difference, any photos showing the difference would be nice. I have searched the web, but I can't find anything.

Thanks.

[Wildflower-nut]

I have a friend that tried to use an efs lens on a 6D and it knocked something off in the mirror box. He called cannon and they talked him through reattachment over the phone. This indicates to me it is a common occurrence. Not sure what the exact differences are but apparently efs lenses should not be used on full frame for more than simply coverage issues. EF lenses can however be used of cropped sensor cameras.

[arash_hazeghi]

No, EF-S lenses cannot be mounted on FF cameras. The rear element of these lenses will hit the FF mirror when it rises and might break the mirror mechanism.

[Don Thompson]

Only applies to FF? They can be safely used on the 1D Mk III and Mk IV?

[Diane Miller]

I don't know that answer but why would you want to? They throw a smaller image circle, matched to APS-C sensors, and will vignette on a larger sensor.

[arash_hazeghi]

Only applies to FF? They can be safely used on the 1D Mk III and Mk IV?

no, they cannot.

[Doug Brown]

EF-S lenses cannot be used on a FF body, a Mark III, or a Mark IV.

[Don Thompson]

I don't know that answer but why would you want to? They throw a smaller image circle, matched to APS-C sensors, and will vignette on a larger sensor.

I don't necessarily want to use them, I just want to know the difference between the two and where they can and cannot be used, and why.

Thanks for your response.

[Don Thompson]

Thanks Arash and Doug.