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The Electro-Focus (EF) mount has been the standard lens mount for Canon cameras since it's introduction in 1987.

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9answers
98k views

What is the difference between EF and EF-S lenses?

This is specific to Canon, but what is the difference between EF and EF-S lenses?
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2answers
19k views

What's the difference between Canon EF-S and EF-M?

What is the difference with Canon EF-S and EF-M lens?
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3answers
12k views

Is there a way to use Canon 18-200 EF-s lens on Canon 6D full frame body?

I just purchased Canon 6D (Full frame camera) and I hate to lose the usage of my simple 18-200 EF-S lens. Any idea if there is a technology that allows me to use the lens on the 5d body?
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3answers
3k views

Why I can't find an A-mount to Canon EF Adapter?

I looked online for an adapter from A-mount to Canon EF but I couldn't find. The Minolta/Sony A-mount flange focal distance is 44.50mm and Canon EF flang focal distance is 44.00mm, in theory A-mount ...