Reviews and Problems with Sigma 105mm F2.8 EX DG OS HSM Macro
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26 October 2011
Conclusion: Overall, Sigma should be very proud of this lens. It's packed full of functionality and it performs to a high standard, and considering its performance it's priced fairly too. If you can get over its size and weight, it's a cracking piece of glass to have.
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Excerpt: A ruggedly constructed, large-aperture, full-frame, image-stabilized, 1:1 close-up lens, this medium telephoto prime ($970, street) converts up to about 150mm on Sigma’s SD1, as well as on most DSLR cameras with APS-C sensors.Its attractions include a nonrotating barrel suitable for lens-mounted macro ringlights; super-low dispersion and high- refractive index elements that correct for color fringing; and a hypersonic focu-sing motor with manual-focus override.
Conclusion: Although it's not the cheapest of lenses, the Sigma 105mm macro proved to be worth its price-tag. The HyperSonic Motor provided the fastest and most accurate AF and the Optical Stabilizer was invaluable for handheld shots, but where the lens really excelled was in the image quality it produced.
Excerpt: If I had to name one category of lenses in which the competition is the most fierce and the most balanced at the same time, I would point at 100 mm macro class without any hesitation. There are no weak instruments here. In fact every single lens, tested by us so far, has had very good or even splendid results.
Cons: Weak work against bright light,, High vignetting on full frame,, Autofocus noticeably slower than that of its rivals.
Excerpt: One of the most recent arrivals on the macro scene, the Sigma 105mm f/2.8 EX DG OS HSM lens may be one of the more pricey options for this focal length, but with its EX designation Sigma promises that both the lens' build and optical qualities befit the demands of the professional user.
Pros: Excellent functionality, Impressive performance, Image stabilisation system, Good magnification