Optically, the Sigma 24-70mm f/2.8 IF EX DG HSM lens is rather weak when used wide-open. The focused-distance window includes markings that indicate depth-of-field for the 24mm focal-length setting but there are no markings for other focal lengths. Sigma has provided just the right amount of resistance on the manual-focusing ring, but the zoom ring is a shade on the heavy side. It is important to note, however, that Sigma’s instruction sheet warns the lens can only be used in AF mode when mounted on camera bodies that support HSM-type ultrasonic drive motors. That said, the lens can also be manually adjusted at any time. Having the manual-focusing ring at finger-tip touch could be a liability were it not for the internal-focusing drive system, thanks to which the focusing ring remains stationary in AF mode. Sigma 24-70mm f/2.8 IF EX DG HSM review sample image Under other circumstances this change of grip might have left the lens feeling rather unbalanced but the Sigma’s compact dimensions largely avoid this problem. The zooming ring is wider and positioned to the rear, meaning that the left hand’s grip has to be shifted closer to the camera body. It nestles very comfortably in the hand with the manual-focusing ring falling naturally under the thumb and second finger. Nothing appears to have been sacrificed in terms of build quality – the Sigma’s matt-black zoom feels solid and looks at home on the front on a Nikon D700. The big question, therefore, is whether this less expensive lens is a true bargain or simply an inferior corner-cutting pretender. Whereas Canon, Nikon and Sony all pitch their 24-70mm f/2.8 zooms in the £1,400 to £1,500 RRP bracket, Sigma’s lens is just £900 by comparison – and that’s before any on-the-street price discounts. The first thing to note about Sigma’s 24-70mm f2.8 lens is its considerably lower cost than other premium zooms. Sigma’s pro-spec 24-70mm f2.8 full-frame zoom lens is available in Canon, Nikon, Pentax, Sony and Sigma mounts, and was tested here in conjunction with a Nikon D700 (full-frame) body. sure my beloved drives are another thing.Sigma 24-70mm f/2.8 IF EX DG HSM lens review a must for anyone today is not to invest more than a certain number (450 average of the current assessments of second) in a standard zoom! Recommended therefore, those figures do not think there's any better. For optical quality, auto focus, sharpness and I keep building more than a good memory! Costs half the Canon, I can not make comparisons on the relevant image quality but my Sigma 24/70 it was excellent even on demanding APSC sensors and clogged.
#Sigma 24 70 2.8 dg ex full
But the versatility of a 24/70 species on the full format is remarkable. I have not for a matter of approach to photography: I prefer three continuous.
Opinion: I'm not familiar with the zoom there is little to do. If you want to zoom 2.8 quality I think is inevitable and acceptable.
Pros: Versatility, brightness, sharpness, color, construction, silent auto focus, fast and accurate, the price (or at least compared to the equivalent of used Canon / Nikon).
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