I have been hearing that Sigma lenses are not of very good quality. Is this in fact true or just someones opinion? I have been thinking of getting a sigma lens for my D-3200 and was looking at Sigma and Tamron. I have a Sigma lens that I use to use with my Minolta XG-7 which I thought worked just great. I am an amateur that just loves taking pictures and am not a pro. I currently use an 18-55 mm and a 55-300 mm and am looking at an 18-300 mm. What are some suggestions? Thank you.
Du
In the old days Sigma did get a bad rep for having lenses that seemed to be fairly inconsistent. If you got a "good" copy of a lens it worked fine, but their quality control wasn't really the best and as a result more than a few people it seemed would end up with a "bad" copy of a lens that wouldn't work quite as well as advertised. That doesn't seem to be the case anymore, though it should be noted that neither Sigma nor Tamron will hold their resell value as well as a name brand lens will.
My experience with both Sigma and Tamron has been a good one overall, I use a Sigma 70-200 MM OS 2.8 and I have two Tamrons, a 70-300 mm 4.5-5.6 VR and a 17-50 mm 2.8, and all three have been excellent lenses for me. Never had any issues with any of them, and I get good image quality out of all three.
This was shot with my Tamron 70-300 mm VR:
20150907 III 144 by
Todd Robbins, on Flickr
Both of these were shot with the Sigma 70-200 MM 2.8, wide open at 2.8:
HD Zoo 372 by
Todd Robbins, on Flickr
HD Zoo 310 by
Todd Robbins, on Flickr