Reviews and Problems with Sigma 12-24mm F4.5-5.6 EX DG ASPHERICAL /HSM
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This was better than described
13 March 2016
Summary: This was better than described. Excellent value we will continue to buy from seller. He even included the original box, the lens case and paperwork. We have used it numerous times and it is in perfect working condition. No scratches or wear and tear at all.
Conclusion: I don't understand why people pick up a lens second-hand, find it doesn't perform very well and then denigrate it without checking to see if it is faulty or if it was abused by the last owner. Why was it sold and why was it so cheap? Do they never ask these questions? No.
Pros: Range, build quality, image quality
Cons: Can't use a polarizing filter at the wide setting.
Conclusion: Agai, lack of Sigma's QC: i bought one second hand, but this lens is a lemon, you can throw it away. The lens was soft overall no matter what i used, really bad till f7.1, from f8 till f22 was overall soft.
Cons: lack of Sigma's QC, lens is soft overall, slow AF
Conclusion: Bought one used, mint. Astonishingly wide but this is a lens that begs to be used on a tripod and stopped well down, to f11 at least, if not further, where it does shine with some great results. It's just too slow for general hand-held use (which is not what it's really designed for).
Pros: Very wide on full frame, sharp when stopped down, well built, quite inexpensive for the widest non-fisheye available, decent contrast. Remarkably distortion free if kept upright
Cons: Very slow at f4.5-f5.6, dreadfully soft at wider apertures, some CA, needs a tripod and liveview to get the best out of it - needs using like a large format lens really
Conclusion: I bought this lens to replace the Nikon 14-24 with my D700. I also have the Nikon 24-70 (and 70-200 VR2) and do not often use a lens below 24. The 14-24 was therefore quite a waste. However, I wanted something much cheaper that is not too different in terms of results.
Pros: Price Excellent range Comparative quality Weight & size
Cons: Cannot use filters; Nothing else really (for the price)
Conclusion: I take images of landscapes and cityscapes. My 17-40, an OK lens, has significant linear distortion at the wide range. The Sigma is one or two steps up in this regard even at the 12 mm range. Wide corners at the 17mm are sharper in the Sigma (based on testing 4 Sigma copies) compared to my 17-40.
Pros: Works great on 5 DII, only lens to do true 12mm, little linear distortion. Sharp where it counts.
Conclusion: This lens has a fairly steep learning curve compared to most. On a FF it vignetts (sp?) if the filter/lenscap holding ring is left on, for example. It took me a while to really appreciate what this can do for me.
Pros: Excellent color and very good sharpness, even at 12mm. VERY nice from 14-24mm. Good low price for the wide view(s). Solidly made.
Conclusion: I bought this lens for Canon 1D mark III in order to get more wide angle. I have also Canon 17-40mm, but difference between 17mm and 12 mm is big in 1,3 -crop body. Must be stopped down to f8-13 to get best results, and in landscape photography it´s usually ok.
Pros: With Canon 1 D mark III (1,3 crop sensor) in apertures 8-16 sharp also in corners, good colours and contrast, no distortion, no CA. 12mm really wide.
Cons: a little heavy and bulky, not possible to use uv/skylight filter in front of the front lens.
Conclusion: using this lens on a 5D, and 5DII. Returned my copy to sigma for some decentering. Came back better, but not perfect. The corners are never sharp, even at f11-f16, but the rest of frame is very good.
Pros: Range Distortion generally well controlled. Center sharpness is good Good CA control
Cons: Corners, never completely sharp Slight decentering No possiblity for filters slightly flare prone