Excerpt: I've probably only shot about 100 images so far, but I'm not real happy. On a sunny day shooting runners they all had some sort of halo around them, not a good one. Like the colors were running together. Indoor soccer seems a little off too. I did calibrate this lens to check for back focus and that's not the problem. Stills look good, but anything moving doesn't look great. I bought this for indoor sports, not living up to the hype so far.
Pros: Durable, Easily Interchangeable, Strong Construction
Excerpt: Was very happy with this lens for 4 months until.... had the lens mounted on a Nikon body in my Domke bag. The bag was sitting on top of a 12" tall tool box and it fell forward. Set it back upright not thinking anything of it. Finished setting up my lightning then reached in to take the camera out - the Sigma snapped in half! Two bodies, 4 other lenses, filters, etc, that was the only damage in the bag.
Excerpt: I purchased this lens for an upcoming wedding. But after testing it for a couple of weeks I found that it simply wasn't sharp enough or consistent enough. I have sent it back and have ordered the Canon 34-70.
Excerpt: I bought this lens because the range and aperture were what I was looking for without the Canon L price. The lens was bigger than I thought but very easy to handle. Focusing was dead silent and I loved everything about the lens but it refused to take sharp photos, even on a tripod. I tested the lens on stationary objects as well as people and none came out with any detail or tack sharp focus. Tried my other lenses on the same bodies, tack sharp focus every time.
Pros: Rugged, Silent autofocus, Strong Construction
Excerpt: This lens does provide excellent output, extremely sharp, great contrast - in almost every way a great alternate to the Nikon 24-70 - when it's in focus. On the two I tried the HSM system will continuously hunt for focus, even on a brightly lit, strong contrast target. In low light situations, it's absolutely hopeless. Most reviews claim 'virtually silent' AF. My first lens was substantially louder than any other I own.
Summary: Nutze Canon 5D Mark II Bin mir nicht sicher wieso... aber extreme Vignette.. immer 1-2 mm vor dem Fokus scharf.. (kann man korrigieren bei manchen Kameras!) und der Fokus hat oft nicht funktioniert (kann jedoch auch an der Interaktion mit meiner Kamera liegen, da ich jetzt ein Canon 24-70 habe und es da ab und an bei 2 Fokuspunkten auch zu Problemen kommt) Bei hellen Stellen wie Haare (Gegelichtsituation) franzt es aus... Also für Hobbyfotografen evtl (?!
Summary: Io sono sono mai stato un grande estimatore degli obiettivi della Sigma, però essendo curioso di natura e non volendo avere giudizi di parte senza averli neanche provati appena ho un amico oppure un collega che li ha, sono molto felice di avere la possibilità di provarli. Quando ero indeciso se prendere il quello della casa madre (decisamente più caro) il Tamron, il Tokina o il Sigma, per fortuna, ho avuto modo di provarli tutti e quattro.