Summary: One of my favorite lenses. Fast, sharp, light, renders colors beautifully, nano-crystal coat, relatively cheap. The lens does feel a little cheap in construction, but that doesn't in any way hinder performance.
Summary: So after owning a tamron 28-75 2.8 for a while, I noticed a lot of focus issues. The lens would hunt even in moderate light and would have random focus behavior especially under tungsten lights. I had similar issues on DX with the tamron 17-50 2.8. It became clear to me that I needed to find another alternative. I already own the nikon 50 1.8G, 105 VR II macro 2.8 and Nikon 70-200 VR II 2.8. All that was missing was the wide end. I decided to look into the Sigma 35 1.4.
Summary: If we take the price out of the equation, (because is a little bit pricey) this is an amazing piece of glass, I have a d700 and from landscape to fashion, this lens has never let me down. PROS: Superb focus, silent and super fast Sharp sharp sharp Small, doesn't wait at all Cons: Price.
Summary: This is a perfect walkaround lens for most purposes. The field of view is absolutely phenomenal, and there's next to no distortion. Especially on my D600, you can get a really slim level of depth of field combined with a wide field of view. Sharpness is amazing, it can hold its own with lenses far more expensive. Nikon's Nano Coating controls flare, but it also just seems to add a certain 'pop' to the images I take with it.
Summary: Just got this lens about two weeks ago and I have nothing but superlatives to pass along. I have been shooting it on my d7100 and have found it to be razor sharp corner even wide open. The clarity is remarkable and the colors are wonderful. I was surprised to find it to be so light in weight despite its obvious superb build.
Summary: This is my second prime lens. I also have the Nikkor 50mm f/1.8. That is a great lens for portraits but I needed something wider. I am blown away by the sharpness and speed of this 28. The kind of thing that makes photography a joy. Fast focus, sharp edges at close crop, and a perfect angle for general photography and street photography.
Summary: I rented the Nikon 35mm1.4 G for a NYC trip......An excellent lens from Nikon...However,at $1650 it was pricey.....This 28mm 1.8G produces crystal clear images..at one third the cost of the 35......truth be told if money were not a consideration,I would go for the 35mm.....why the 35..well ,I find that I crop to the 35 to 50 size a lot...
Summary: Distortion is well controlled and sharpness is maintained from f/1.8 wide open. I have tested many lens's and they all are pretty soft at wide open aperture. Not this lens. I also dont see any focus issues at f/1.8 as well. Color and contrast is superb and images are sharp from edge to edge.