For a crop sensor camera there is no better none-prime lens you can put on your camera and there are very few primes that can match what it offers at any focal length. The value of this lens is excellent.
Lets get the cons out of the way. . . crickets. Ok, seriously if you want to get picky. .
Its not cheap but you can’t expect a lens this good, this ground breaking to be cheap - it is still in the realm of affordable at $799 - I have seen a few deals that drop that $50 to $100 but I don’t expect this lens to be much cheaper in a year or 2 or 3.
It doesn’t have IS -so what, neither does my $2200 Canon 24-70 f/2.8 USM lens
It is a limited range - now this is a valid concern BUT across that range you get f/1.8 - there are no primes that offer f/1.8 at 18mm. Basically when you walk around with this lens you are walking around with a bag of primes, 18, 24, 30, 35 all at f/1.8 and all very, very sharp.
The Pros:
Build quality is top notch, metal construction, distance indicator - great for star shots. Focus ring moves so smoothly, offers full time manual focus. Zoom is smooth and fluid.
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Full size sample images!
Buying the Sigma? Amazon | B&H | Adorama