Summary: Having read multiple reviews from every web site I could find on the most bang for your buck 50mm for canon, I made the leap of faith and purchased this lens at the local shop. This was not one that had been sitting around, because they had just gotten in a new shipment.
Summary: I tried four copies; three were bad, one was awful. This lens has been very favorably reviewed, and I find their 50 f1.4 to be magnificent, so I took a chance. The only thing I can think, based on what I saw in the files, is that in each case, one or more of the elements was out of alignment,...
Excerpt: Front Focuses on anything within 5 feet. Back focuses on anything beyond 10 feet. Inconsistant in the mid range. Looking at reviews in forums this is a pretty normal thing with sigmas. When they are built well they are really good, when not they are terrible.
Summary: I was 0 for 2 with the Sigma 30mm bought at Amazon. Got the first one, focus was terrible. I mean the only thing I could get in focus on my xti was a shot outside at f/8 and infinity. I tried to focus on my birdfeeder at 30 feet and was really blurry (with plenty of shutter speed).
Summary: I had high hopes for this lens. My 50mm f/1.8 nikkor is a great lens, but sometimes I just don't have enough room to get everything in the shot. So I purchased the Sigma 30mm f/1.4, also being excited about the extra stop because I often take photos in low-light situations.
Summary: I have a canon 60d and was looking for a lens equivalent to 50mm on my cropped sensor. I spent hours/days reviewing what lens to buy. I knew I was taking a gample going for a Sigma lens as it was clear after reading copious amount of reviews that you are playing Russion Roulette in trying to get a...
Summary: I held off for quite some time before getting this lens, put off by reviews mentioning focusing issues. in the end i couldn't resist. I really wanted to love it, i went through 4 copies to get a copy which focussed spot on with my body (550d).
Summary: das gleiche Problem wie zuvor 3 Objekt. 35mm/1,4 ART die zurück gingen, bis zu 70% AF - Ausschuss, darum warscheinlich das Schnäppchenangebot,- kapieren die Verantwortlichen Herren bei Sigma nicht ?