Avaliações para Sigma 17-70mm F2.8-4 DC Macro OS HSM
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Sigma 17-70mm F2.8-4 DC Macro OS HSM
PC Magazine
7 Maio 2014
Resumo: The Sigma 17-70mm F2.8-4 DC Macro OS HSM lens is a solid replacement for the 18-55mm that shipped with your camera, but another Sigma zoom is our Editors' Choice.
Prós: Sharp. 4.1x zoom range. 1:2.9 macro magnification. Optical stabilization. Wide aperture. Compact and light. Available for multiple camera systems. Compatibility with Sigma USB dock and mount conversion service.
Resumo: Sigmas 17-70mm er et præsentabelt objektiv, som fungerer udmærket. Der er billedstabilisering og lydløs fokusmotor. Både pris- og kvalitetsmæssigt ligger det på niveau med Canon EF-S 17-85mm, og det gør det svært at finde argumenter for at købe uoriginalt.
Resumo: Sigma's latest 'C' badged 17-70mm F2.8-4 is an excellent upgrade option for SLR shooters who've outgrown their kit zooms, and are looking for better image quality and more creative flexibility. It offers a fine balance of zoom range and maximum aperture, while still being highly portable.
Prós: Useful combination of zoom range and relatively fast aperture, Very good image quality across most of the range, Compact size, Reasonably fast and near-silent autofocus, Effective image stabilisation, Photographers looking for a high quality, general purpose zoom for everyday shooting.
Cons: Somewhat weak image quality at wideangle (soft corners and chromatic aberration), Macro shooting a little impractical (very short working distance), Wideangle or close-up shots
Sigma 17-70mm f/2.8-4 DC Macro OS HSM Contemporary
Imaging Resource
3 Junho 2013
Conclusão: With the new "Contemporary" 17-70mm ƒ/2.8-4 OS HSM "C", Sigma's created a smart and stylish upgrade to its kit-lens alternative. There's a good recipe for sales here: make it look awesome, and don't jack up the price too much.
Resumo: Those looking for a high quality general purpose zoom lens for their APS-C format DSLR could do a lot worse than this lens from Sigma. As well as sporting a very useful zoom range, having a maximum aperture slightly faster than normal will help with shooting in low light, as will the optical...
Prós: Very good sharpness in the centre, Good build quality, Close focusing, Optical stabilisation
Cons: Drop off in clarity towards edges as lens is zoomed in may concern some people, Barrel distortion at 17mm
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Resumo: „Out of the frying pan into the fire” – this idiom perhaps describes the newest moves of Sigma the best. Firstly I completely don’t understand why they launched a successor of a very well done 17-70 mm OS model. Just to gain those several dozen grams?
Prós: good build quality,, splendid or at least very good image quality in the frame centre throughout the whole focal range to boot,, good image quality on the edge of the frame for 28-70 mm focal lengths,, negligible longitudinal chromatic aberration,, lateral chromatic aberration corrected well in t...
Cons: image quality at 17 mm on the edge of the frame below the decency level,, a bit too high chromatic aberration at 17 mm and by f/2.8,, noticeable vignetting,, work against bright light should have been better.
Resumo: Biję się w pierś, bo test któregoś z modeli z serii Entry powinien być wykonany już kilka lat temu. To w końcu jedna z najczęściej polecanych lornetek na naszym forum. Przyczyną jest oczywiście przystępna cena i opinia modelu lepszego, od dobrze przyjętych poprzedników z serii Taiga.
Prós: rozsądnej jakości obudowa jak na tę klasę cenową,, bardzo duże pole widzenia okularów,, niewielka aberracja chromatyczna w centrum pola widzenia,, pryzmaty ze szkła BaK-4,, czarne i przyzwoicie wyczernione tubusy,, przystępna cena.
Cons: duża dystorsja,, słaba jakość obrazu na brzegu pola,, spory astygmatyzm,, zbyt duża aberracja chromatyczna na brzegu pola widzenia,, wyraźne pociemnienie obrazu na brzegu pola widzenia,, mało stabilny mostek okularowy.
Resumo: Pod koniec roku 2009, Sigma zdecydowała się na odnowienie tego ciekawego produktu. Zmian zaszło sporo. Przede wszystkim pojawiła się stabilizacja obrazu i ultradźwiękowy napęd autofokusa HSM (w poprzednim modelu był dostępny tylko dla mocowania Nikona). Lekkiej zmianie uległy także parametry.
Resumo: The Sigma 17-70mm F2.8 -4 DC Macro OS HSM is the practical zoom. A large-aperture, standard zoom lens for digital cameras with an open-aperture value of F2.8 (at 17mm) and covers the most frequently used focal lengths.