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A Daft question. Whats the difference between EF and EFS? Why does canon have these 2 mounts? Technically what does it mean?
Difference b/w EF and EFS
- Thread starter naveen.nag
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- Simon
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EF stands for Electrofocus
This is the mount that Canon introduced in 1987 when they introduced the EOS camera; EOs stands for electro optical system
Every EF lens ever made fits every EOS camera ever made, both film and digital.
EF-S stands for electro-focus, short back focus. The first EF-S lens was introduced in about 2004, with the EOS 300d
These lenses are only compatable with APS-c sensor cameras, because of the reduced image circle and the shor back focus.
On a camera with a larger sensor there would be problems with vignetting and the mirror hitting the lens.
EFS lenses help the users of the APS C sensor cameras with useful focal lengths not covered by the EF range.
This is the mount that Canon introduced in 1987 when they introduced the EOS camera; EOs stands for electro optical system
Every EF lens ever made fits every EOS camera ever made, both film and digital.
EF-S stands for electro-focus, short back focus. The first EF-S lens was introduced in about 2004, with the EOS 300d
These lenses are only compatable with APS-c sensor cameras, because of the reduced image circle and the shor back focus.
On a camera with a larger sensor there would be problems with vignetting and the mirror hitting the lens.
EFS lenses help the users of the APS C sensor cameras with useful focal lengths not covered by the EF range.
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- Rob Telford
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MWHCVT said:Just to confuse things a little more you know also have EF-M which is a mount designed for the new Canon Mirrorless Systems
Matt
MWHCVT
Not to be confused with the manual focus only EF-M film body that used EF lenses which Canon made in the early days of EF mount.
