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Hmmm... f/1.8 is possible because it's a DC lens. A lens for the 35mm format with this focal range and aperture would have been larger and heavier than any of us would have cared to carry. The low weight, 810g, is impressive. As far as I remember, the Zuiko 14-35mm f/2.0 for the smaller 4/3 format is almost 1kg.Pity it's a DC lens but impressive nonetheless.
It is, and it doesn't offer neither the same light gathering ability, nor the same depth-of-field control. Checking out lens data on Sigma's website it seems a VERY high performance lens. Let's wait and see for the real world samples...Hmmm... f/1.8 is possible because it's a DC lens. A lens for the 35mm format with this focal range and aperture would have been larger and heavier than any of us would have cared to carry. The low weight, 810g, is impressive. As far as I remember, the Zuiko 14-35mm f/2.0 for the smaller 4/3 format is almost 1kg.
Agreed. I'd take a prime over a zoom any day, if there is one available. Thing is, taking Sigma as an example, according to the lens' MFT at least: they just don't have any better offer than this zoom in the same range as far as primes go, except of course the 35mm f1.4 "A" (which, however, is a FF lens).I'm happy with - in fact far prefer - primes. Provided Sigma keep delivering class leading performance with full-frame primes in their Art series, I will keep buying them.
Jorgen, I saw these images, and they look quite impressive except for a bit of softness aide-open in the corners; as you say, the problem is the camera used. I'd love to see some Sigma samples taken with the SD1, or Nikon samples taken with the D7100... these would be much more interesting and indicative of the real quality of this lensHere's the pudding, wherein the proof is supposed to be. I have no experience with the camera used, a Canon 600D, but the results seem very nice, although not ultrasharp out of the camera at f/1.8 (see the crops of the child portraits at the bottom).
Gear for Image :: Sigma ART 18-35mm f1.8 DC Preview