Is a Sigma 10-20mm f/3.5 EX DC HSM Autofocus Zoom Lens compatible with a Canon 1DX?

[cicopo · Accepted solution]

NO, it's designed for crop bodies. You'll get images that look like you shot them through a pipe.

see

https://forums.usa.canon.com/t5/Lenses/Using-a-lens-designed-for-crop-bodies-on-full-frame-SAMPLES/t...

[scottsullivan]

Thank you!

[hsbn]

But if you have the lens and cannot sell it for some reason, you can still use it and crop the photo in post to remove the vignette. In a way, you'll turn your photo from full frame view into crop 🙂

[scottsullivan]

I was thinking I might still find creative use for the lens. Thanks for your help!

[ebiggs1]

There is some concern that the lens may strike the camera mirror. The Sigma 10-20mm and the Canon 1D x is not a logical duo? Why?

Canon EF-S lens' won't even mount!

[cicopo]

In my experience (which is limited) there is a physical difference between a Canon Brand EF-S lens & those used by Tamron & Sigma (but designed for crop bodies). The Sigma 18-200's I've owned along with the Tamron 18-270 fit my 1Ds & 1Ds2 just like an EF mount lens. Nothing protruded into the mirror box area or interfered with mounting them to the body and the mirror didn't hit them when taking a photo, which is why I was able to take samples of what the combination produced.

[hsbn]

Most 3rd party lens (I cannot say all) make EF and EF-S mount the same (some says to save money). Only Canon EF-S is different. So you can mount any third party crop lens onto your full frame camera (but don't take my words for it).

[ebiggs1]

Not trying to judge anyone's choice of equipment because I have seen some pretty darn nice photos with some pretty weird combinations.

That said it has to raise some eyebrows if someone wants to bolt a third party, off-brand, APS-C lens to a Canon flagship model Canon 1D X camera.

Maybe it's just me but again, why?

[hsbn]

Sometimes just for fun 😄 hehe ... I have a Sigma 10-20 for my 30D. When I upgrade to the 6D, I still keep the old camera + sigma lens. I know I can mount it on the 6D, so I did.