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Canon Lens Mount Converter Ef-S Lens to 5D Mark III

by Mo
(San Antonio, Texas, USA)

Canon EF-S 10-18 Lens

Canon EF-S 10-18 Lens

Camera: Canon 5D Mark III
Lens: EF-S 10-18mm IS Macro

Is there a Canon mount converter that will safely turn my EF-S lens to an EF lens in order to fit my 5DM3?


Thanks for asking about an EF-S to EF lens converter for Canon. No, you cannot make a smaller EF-S 10-18mm lens fit onto a larger full frame 5D Mark III. The image circle on the 10-18mm lens is too small to project light to cover the entire full frame sensor of the 5D M3.

EF versus EF-S Lenses

It's very easy to get confused on lens /camera compatibility when it come to EF and EF-S lenses and if they'll work on APS-C crop or full frame sensor cameras. I shot a short video on this exact topic and many viewers have commented on how simple and helpful it was for them to watch:
EF vs. EF-S Lenses

I hope this helps!
Thanks,
Bruce

EF-S Verses EF Lenses
Canon 5D Mark III

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Lens compatibility
by: Stephen RBP

I was very sad that I had to trade in my Sigma 10-18 lens when I bought a 5D.
However I bought the Canon instead and that’s amazing!!

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Author Bruce Lovelace
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Bruce Lovelace is the publisher of Canon Camera Geek. Read more about him on the About Page. He also publishes how to articles and camera gear reviews at the Photography Tips website.

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