Full Frame Lenses...

[Leadfingers]

I've seen the phrase "full frame lens" several times recently, and it makes no sense to me. Isnt a lens a lens?

Aren't all EF-mount lenses basically the same, in regard how a full frame body or APS-C body uses it?

Please correct my misunderstanding

 

[tcmatthews]

Many third party lens manufactures make lenses designed for crop cameras in the EF mount. Canon manufactures full frame lens in EF mount and Crop camera lenses in EF-s. The third party crop lenses (for the most part) can be mounted on Full frame cameras but will exhibit strong Vignetting.

 

[ajfotofilmagem]

EF lenses are designed to work in cameras with 24x36mm sensor, which we call full frame, and also in smaller sensors, as APS-C.

On the other hand, EF-S lenses will not work at full frame bodies. Sigma DC lens, equivalent to the Canon EF-S, and are designed only for APS-C bodies, but also fit the EF bayonet, but will have image with the dark corners in full frame.

 

[Leadfingers]

EF lenses are designed to work in cameras with 24x36mm sensor, which we call full frame, and also in smaller sensors, as APS-C.

On the other hand, EF-S lenses will not work at full frame bodies. Sigma DC lens, equivalent to the Canon EF-S, and are designed only for APS-C bodies, but also fit the EF bayonet, but will have image with the dark corners in full frame.

When you say EF-S lenses "will not work" on full frame bodies.. can you expand on that? Will they physically not fit?

Again, it was my understanding that the EF mount was universal.

 

[ajfotofilmagem]

EF lenses are designed to work in cameras with 24x36mm sensor, which we call full frame, and also in smaller sensors, as APS-C.

On the other hand, EF-S lenses will not work at full frame bodies. Sigma DC lens, equivalent to the Canon EF-S, and are designed only for APS-C bodies, but also fit the EF bayonet, but will have image with the dark corners in full frame.

When you say EF-S lenses "will not work" on full frame bodies.. can you expand on that? Will they physically not fit?
Again, it was my understanding that the EF mount was universal.

Canon made its EF-S lenses purposely not fit in full frame bodies.

Other manufacturers such as Sigma, Tokina, Samyang, did not prevent your lenses designed for APS-C fit in full frame bodies, even if the image corners become dark.

 

[Geek]

The physical mount is the same between an EF and an EF-S lens. However, the back of the EF-S lens protrudes 2-3mm (not sure exactly how much) more into the body where it can come in contact with the mirror as the mirror moves up out of the way of the sensor. Which will most likely damage the mirror and the back of the lens.

Since the mount is the same, an APS-C cameras can use either EF or EF-S lenses. But a full frame camera can only use EF lenses. And EF-S lenses are designed with an image circle only large enough for the APS-C sensor.

 

[mr_hyde]

The lens EF-s or a non Canon lens designed for APS-c just does not illuminate the full area of the full frame sensor.

See attached image as example where a Tamron lens designed for APS-c was mounted on a full frame Camera.

 

[Loswr]

The physical mount is the same between an EF and an EF-S lens. However, the back of the EF-S lens protrudes 2-3mm (not sure exactly how much) more into the body where it can come in contact with the mirror as the mirror moves up out of the way of the sensor. Which will most likely damage the mirror and the back of the lens.

Since the mount is the same...

Not all EF-S lenses protrude in far enough to contact a FF mirror (the 10-22 does, the 17-55 doesn't). But the mounts aren't the same, there's an additional physical protrusion on the EF-a lens mount that physically prevents it from mounting on a FF or APS-H body. It's plastic, and can be removed (as some did to use the 10-22 on APS-H bodiesto get wider than the 16-35 or 14/2.8).

 

[TexPhoto]

Agree with all of the above.

I have a tamron 11-16 f2.8 which is intended for 1.6X Crop cameras. Of course the image circle also cover 1.5X Crop cameras, because they make the same lens for Nikon. And it also covers my APS-H 1.3X crop 1D4, making for a very nice all metal sports super wide.

And it also fits my FF camera, but does vignette severely at 11mm. But it covers the Full Frame at about 14mm.

 

[Geek]

The physical mount is the same between an EF and an EF-S lens. However, the back of the EF-S lens protrudes 2-3mm (not sure exactly how much) more into the body where it can come in contact with the mirror as the mirror moves up out of the way of the sensor. Which will most likely damage the mirror and the back of the lens.

Since the mount is the same...

Not all EF-S lenses protrude in far enough to contact a FF mirror (the 10-22 does, the 17-55 doesn't). But the mounts aren't the same, there's an additional physical protrusion on the EF-a lens mount that physically prevents it from mounting on a FF or APS-H body. It's plastic, and can be removed (as some did to use the 10-22 on APS-H bodiesto get wider than the 16-35 or 14/2.8).

Thanks, I didn't realize that the EF-S lenses actually had the additional protrusion that prevented them from mounting on EF mounts.

 

[TexPhoto]

Not my photo but a good illustration of the EF vs EF-S lenses, the extra protrusion of the EF-S lens can be seen on the right: