Reviews and Problems with Sigma 15-30mm F3.5-4.5 EX DG ASPHERICAL
Showing 1-9 of 9
Too much hype
Alexander N, Amazon
2 September 2010
Summary: Well it does not auto focus on Nikon D5000 even though the manual say it does. It is very hard to focus this lens manually. The resulting picture always come out somewhat fuzzy and color is weird. No regular filters would work on it. If you have Nikon D5000 the stock lens work much better then this one. I would not recommend this to a friend.
Summary: The lens is a great performer for sharpness on my Nikon D600 but that's about it. For the range its unnecessarily large. It feels cheap too. The weight of my Nikon Nikkor 28mm (small) feels better than this. The AF/MF ring idea is neat, but useless. The flare is unbelievable. I have shots from INSIDE a church and I have flare. How does THAT happen?? Its rather lightweight - more than you would think with its size - but just feels cheap. The hood mount is lazy design too.
Summary: I returned my first Sigma 15mm to 30mm EX DG lens by priority mail on Monday (Virginia to New York) and received my exchange lens from Cameta Auctions (eBay) by UPS on Friday morning! Kudos to good customer service! Now for the disappointing news. I spent over 4 hours messing with this lens over the weekend and am returning it for either a refund or possibly paying more to try the Sigma 10-20 mm (going to look at reviews first).
Pros: Looks and feels good and solid and is easy to zoom. Nice wide angle.
Cons: Images just not sharp and crisp, even at F11. Hard to find proper focus when dealing with infinity shots.
Summary: After having used much my Sigma 2,8/18-50EX (an excellent lens so far!) I decided to go a little wider... and bought a 3,5-4,5/15-30 at ebay. The price seemed very ok for a lens like this at only 249 Euro (about 300 US-$), BUT used on my Fuji S2Pro (Nikon mount NAF) the 15-30 exhibited many flaws: terrible corner softness even stopped down, center sharpness not too good either below f5,6; a little too big for being only 3,5-4,5, and a "front-cover-philosophy" you really...
Pros: solidly built, relatively low price tag (but for that quality...), quite low distortions (but worse than 12-24)
Cons: severe (corner-)softness even stopped down to f8-11, only usable for smallest prints; problems with qc (bad centered); no HSM/USM
Conclusion: My unit has excellent center sharpness from f/5.6, but poor corner sharpness even when used on my 10D (1.6 crop). Has a warm, almost yellowish color response (I like it; someone don't). Focusing is fast and accurate, though no HSM. CA is well controlled, and actually better than my Canon 24/2.8! Barrel distortion is heavy, and noticeable even on my 10D. Flare is a fact with this lens when used on a full frame camera.
Pros: Wide, sharp *at the center of the frame*, contrasty; focus is fast and accurate. Good build quality for the price.
Cons: Terrible edge softness (on my unit at least), heavy barrel distortion, flare-prone (not too much with a 1.6 DSLR since you can leave the cover ring on); bulky; uncomfortable MF due to odd controls (switch + clutch)
Conclusion: For digital buy canon 17-40 or for nikon18-35, or cheap and good for nikon is the 17mm Tokina, for canon this lens focuses slow, but on the good side is very flair resistent, and who needs Autofocus on 17mm.
Pros: 15 mm on a Canon 10 D is 24mm, color rendition,sharpness
Cons: Flare, flare, flare. whoever says this is a great lens, is probably only using it in a studio, because outside 1 out of every 3 pictures is ruined by flare, or it takes you lots of patience to shield the sun with your hand if possible. flare consists of blue spots or and severe loss of contrast. O yes had to return first two copies because of terrible edge fuzzieness.
Conclusion: I may have got a bad one. The reviews are stellar for this lense but mine is crap! I'll wait for the nikor 12-24mm and replace it. It is acceptible at f5.6 to 16 but I don't shoot in there much. At 3.5 it's nearly unussable. Put it this way I'm very reluctant to pull it out of the bag unless there is a lot of light. I use the 28-70 f2.8 all the time (great lense) and try to deal with the lack of width.