Question about efs lens on a canon 1n

lynettemax · May 9, 2010

I have a tokina 11-16mm lens. I just want to make sure this lens is for cropped sensors, right? This lens fits on my canon 1n slr. Is there a reason it can do this?

Sim2 · May 9, 2010

Hallo,
The Canon cameras share the same size of lens mount i.e. the same lens mount is used on "full-frame" cameras as on APS-C or APS-H format cameras.
The difference is in the lenses - a lens specifically designed for APS-C or H will have a smaller image circle than a "full-frame" lens.
The lens will fit, most probably will work but the final "full-frame" image will be severly vignetted on the film camera. If you crop the neg to an APS-C format, it will have the same characteristics as when used on a APS-C camera.
Hope that helps,
Sim2.

WetMogwai · May 9, 2010

I think it was in the manual for the Canon 20D where I read that EF-S lenses can not be used on full frame cameras, whether d*****l or 35mm. The rear element is too close to the film. It warns that using it may result in breaking the reflex mirror. I have never attempted putting my only EF-S lens, the 18-55mm, on either of my 35mm SLRs. I have also not bothered to get any more of those limited use lenses, though I may get the EF-S 18-55 IS on my new T2i just because I like the idea of image stabilization on a camera that I intend to use for video.

Sim2 · May 9, 2010

WetMogwai said:
The rear element is too close to the film. It warns that using it may result in breaking the reflex mirror.

Oooww, that's a really good point. Could be expensive. Tread carefully.

munz6869 · May 9, 2010

My Sigma 10-22mm lens easily fits on my EOS 1v - and gosh it's wide!! No problems with the rear element, however there is a massive problem with vignetting!!! All my images are circles, really. The lens simply isn't designed to cover the full 35mm frame.

Hasn't stopped me making photos with it though...

Marc!

Poisson Du Jour · May 9, 2010

Just to reinforce a mentioned point:
DO NOT mount EF-S lenses on the older EOS 1-series bodies: they are not compatible.

Incredibly, many otherwise sensible photographers have done just this, and incurred a damage bill of $800 (in one case I know of, no repair was possible and the camera was scuppered) replacing the entire mirror box of the 1N because the rear EF-S flange/element has compressed/fractured the mirror, broken the swing arms and twisted the mirror box out: photographer said "the lens wouldn't go on easily so some force was needed, then I heard a strange crack". Oh God... .

Additionally, EF-S lens electronics have an entirely different metering and communication matrice that would make no sense to the EOS 1-series bodies.

Cesium · May 20, 2010

Funny you ask this question.

I was out last weekend shooting my 1n and borrowed a Tokina 11-16 from my friend who was with me. The lens works on the 1n just fine with no mirror interference and zero vignette at 16mm only. 11-15mm, you will see a vignette circle around the whole image.

It is WIDE at 16mm. Try it yourself and enjoy. No worries about any damage.

Depth · May 20, 2010

The Tokina 11-16mm f/2.8 isn't an EF-S lens, only Canon makes those. It's an EF lens that has a smaller image circle due to it being designed for APS-C sized sensors. It will work fine on a 35mm camera with the only downside being vignetting (it will look like tunnel vision) until 16mm's.

Poisson Du Jour said:
Just to reinforce a mentioned point:
DO NOT mount EF-S lenses on the older EOS 1-series bodies: they are not compatible.

Incredibly, many otherwise sensible photographers have done just this, and incurred a damage bill of $800 (in one case I know of, no repair was possible and the camera was scuppered) replacing the entire mirror box of the 1N because the rear EF-S flange/element has compressed/fractured the mirror, broken the swing arms and twisted the mirror box out: photographer said "the lens wouldn't go on easily so some force was needed, then I heard a strange crack". Oh God... .

Additionally, EF-S lens electronics have an entirely different metering and communication matrice that would make no sense to the EOS 1-series bodies.

What are you talking about? Canon has designed it so it's not possible to mount an EF-S lens on an EF mount. It would be like trying to mount a F mount lens onto a K mount.

SilverGlow · May 20, 2010

Depth said:
The Tokina 11-16mm f/2.8 isn't an EF-S lens, only Canon makes those. It's an EF lens that has a smaller image circle due to it being designed for APS-C sized sensors. It will work fine on a 35mm camera with the only downside being vignetting (it will look like tunnel vision) until 16mm's.

What are you talking about? Canon has designed it so it's no possible to mount an EF-S lens on an EF mount. It would be like trying to mount a F mount lens onto a K mount.

You are correct...besides the best EF lenses are the NON-EF-S type.

SilverGlow · May 20, 2010

Cesium said:
Funny you ask this question.

I was out last weekend shooting my 1n and borrowed a Tokina 11-16 from my friend who was with me. The lens works on the 1n just fine with no mirror interference and zero vignette at 16mm only. 11-15mm, you will see a vignette circle around the whole image.

It is WIDE at 16mm. Try it yourself and enjoy. No worries about any damage.

Not good advise at all!

Only Canon makes EF-S lenses...that Tokina you wrote about is an EF type lens (fullframe), and not "digital".

Cesium · May 20, 2010

SilverGlow said:
Not good advise at all!

Only Canon makes EF-S lenses...that Tokina you wrote about is an EF type lens (fullframe), and not "digital".

Did I mention anything about EF-S in that post? I know that the Tokina is EF mount with a 1.6 crop image circle.

The original poster asked why that particular lens works on that particular body. I replied, based on very recent first hand experience, that indeed it does, and why.

How is that not good advice? Did you try a tokina 11-16 on a canon 1n body and have different results from me?

Question about efs lens on a canon 1n

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