Canon Rebel T2 plus Sigma DC 18-50 HSM lens

[johnnywalker]

I was recently given this Canon camera and lens. All of my other 35mm equipment is Nikon. I notice that the corners of the picture are blacked out between the 18 and 24 mm zoom settings (even without the lens hood or a filter), and that the lens hood interferes with the picture on the sides at the same zoom settings. I haven't got access to another Canon camera to see if this is peculiar to this particular camera and lens.
Anyone have any hints as to what is going on?

 

[Kirks518]

Sounds like the lens is made for digital cameras with a 1.6x crop factor, and not a 'full frame' lens. It'll probably work just fine on a APS-C DSLR, but always vignette on a full frame.

 

[johnnywalker]

Here are two scans: Example1 is with the lens hood off, Example 2 is with it on.

 

[johnnywalker]

That makes a lot of sense. I guess I can get rid of it or just use it from 24 to 50. Thanks Kirks518!

 

[Kirks518]

You're welcome. It's probably a decent lens. You should throw it up in the classifieds.

 

[Tony-S]

Yes, that is for a crop-sensor camera. Might be fine at 35-50mm, though. You'll just have to peek through the viewfinder to see if there is vignetting.

 

[johnnywalker]

It seems like a decent lens from the reviews I just read, but the camera also came with a 28 to 90 kit lens, so I think I'll put the "C" one up for sale on DPUG and just leave the kit lens on it.
Thanks for the help everyone.