I recently purchased a used Sigma 160-600 km DG OS lens for my Canon Rebel T2i. It stated is was for a Canon but when I went to attach the lens to the camera body, I noticed the mount on the lens is of considerably smaller diameter than my Canon 18-55 mm land my 75-300 mm and it will not mount properly. My camera is an EF mount and my Sigma lens is listed as the same. Do I need an adapter? None of the research I did prior to purchasing this lens indicated I'd need an adapter. Thanks for any help anyone can provide.
Welcome to the forum:
Sorry to learn you are having challenges!
Any Sigma lens that is made for Canon's EF mount should fit your rebel T2i. I assume you actually mean the Sigma 150-600 DG OS lens instead of 160-600 🙂 If you say that it is considerably smaller, I would strongly suggest you check that what you received IS an EF mount lens. It sounds more like one for a Nikon mount, which is smaller. If you look at the rear lens cap, it should say Sigma for Canon on the plastic
Is this a new lens or a used one?
Thanks for your speedy reply. Minutes after posting, I noticed the rear cap and it does, indeed, say "For Nikon". I purchased this used off of Ebay and went back to check the sellers post and it clearly states " for Canon", so needless to say, I'm not very happy at the moment. Could be an honest mistake but I will be contacting the seller ASAP.
Very wise, hopefully they have a high trust rating.
If this resolves your issue from our point of view, can you please mark as resolved so others will not post and try to resolve the issue.