Conclusion: During testing, this lens has proved itself a capable successor to the popular EF-S 17-85mm IS USM. Although it has some flaws, it is capable of producing excellent results, so long as the limitations of the lens are taken into account.
Pros: Useful zoom range, Excellent sharpness at most apertures and focal lengths, Image Stabiliser, Good build quality
Cons: Distortion, Vignetting at 15mm, Flare and ghosting performance (no lens hood supplied)
Excerpt: Introduced last year, this extrawide zoom built for Canons with APS-C-sized sensors makes an attractive utility lens for the new EOS 60D or can serve as a wider, longer alternative to the Rebel kit lens.
Conclusion: The Canon EF-S 15-85/3.5-5.6 IS USM , ( compare prices ) ( review ) is an improvement over the lens it replaces, the Canon EF-S 17-85mm f/4-5.6 IS USM , ( compare prices ). Image quality has been improved via the use of two additional aspheric elements and one UD element.
Summary: A worthy successor to the EF-S 17-85mm IS USM, the new lens boasts a flexible walk-around range with wider-angle coverage equivalent to 24mm, a slightly brighter aperture when zoomed-out, very respectable optical quality (especially at 15mm), along with build quality that's as good as any non-L lens...
Pros: Flexible range including 24mm coverage., Sharp details into the corners., Quick and quiet USM AF with non-rotating barrel., Smooth manual focusing ring and distance window.
Cons: Poor vignetting with visible darkening in corners., Modest image stabilisation in our tests., Some creep between 24 and 50mm (actual)., As usual for a non-L lens, no hood supplied.
Conclusion: If you want to be mean, you can summarize this test in one sentence: “Oh, so it is possible!” That’s because you can now see what minimalism it was of Canon to release the 17-85 mm IS USM model, which right after its premiere was sold barely cheaper than now 15-85 mm.
Cons: Large chromatic aberration at 15 mm and around the maximum aperture, Large distortion at the widest angle, Noticeable vignetting, Build quality at this price could be better, Poor standard equipment
Canon EF-S 15-85mm f/3.5-5.6 USM IS - Review / Lens Test Report
29 October 2009
Conclusion: The Canon EF-S 15-85mm f/3.5-5.6 USM IS is certainly a desirable lens ... if you can get a good one (ours had a bit of QC issue). The resolution is generally very good from 15-50mm whereas you should expect some border softness at 85mm.
Summary: A cikk címe tulajdonképp lehetett volna „Klasszikusok puha kötésben” is. A Canon EF-S 15-85mm f/3.5-5.6 IS USM ugyanis kis számolgatás után a - ma már – klasszikus EF 28-135 és EF 24-105 objektívek mutáns kisöccseként is felfogható.