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The following opinions have been automatically translated with Google Translate.
Opinion:Heavyweight optics but the result is exceptional, at 2.8 the detail engraving is well visible even for the first quick evaluations .... tropicalization makes the lens definitely more resistant to dust problems .... rnL ' optics is shiny metal I think for unattractive use the signs on the unhappy body to arrive .... i had the tamron 24/70 stabilized and the game is clearly in favor of the fast sigma af and effective silencers
Pros:Constructive quality, Sharpness, AF speed and precision, Contrast and color, Tropicalized
Cons:I did not have time to find it
Opinion:I ran a brief comparative test between Sigma 24-70 F2.8 Art and Nikon 24-70 F2.8 (Reflex Nikon D750): rnrnI Sigma 24-70 Art is a very well-constructed, good-sized lens and higher portability than Nikon , Such as sharpness, colors, contrast, we are on the same level. At 24 mm, 28 and 35 are slightly better than the Sigma, while 50 and 70 are better than the Nikon. RnrnFor the edge distortion the Nikon is somewhat worse than the Sigma at 24mm but is slightly better than 70mm.rnrn Blurry at f2.8 and I assume also other very open diaphragms in my opinion it is slightly for the benefit of Nikon.rnrnValue and precision Nikon's AF focus is also quieter. Rnrn The stabilizer obviously in some situations makes the difference (long times, say under 1/30), but there is something in the Sigma that does not convince me at the non-focal area, I try to explain, it would be to deepen: I used the Single-point focus, while the Nikon's closed-loop diaphragms (F8-F11) is clear and accurate across the entire frame, the Sigma besides the focus area is less sharp, it even looks like a micro-motion, and this is also noticeable with the most open diaphragms (F2.8), although in this case it is Less relevant. RnrnI would like the two lenses to be the same, while when I had the chance to try during a workshop the new Nikon 24-70 VR I noticed a big difference ... rnrn * Note that Nikon has been fine-tuning AF, Sigma No and since the D800 I found that many optics on many Mpx reflexes need fine calibration.
The following opinions have been automatically translated with Google Translate.
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