Hands down best lens for the money. While it's not Nikkor, it is also not over $1k. When my original lens broke after 4 years of abuse (I live in East Africa) I replaced it with a different Sigma. After not getting the same quality shots I bought this one again.

If you're looking to upgrade from the 18-55 kit lens but don't want to break the bank then this is the right lens for you. It has a wider aperture of f/2.8-4, which means you'll get 50-200% more light to your camera and shallower DoF. 70mm definitely makes a difference over 55mm.

Yes, I would recommend this to a friend

Easily Interchangeable; Fast / accurate auto-focus; Nice Bokeh

Heavy

I bought this lens as a replacement to a Nikon 17-55 F 2.8 damaged irreparably; so consider myself very critical. Features Its a moderately fast 17-70 F2.8 – F4 Variable aperture DX or APS Zoom with Image Stabilisation (OS) and good close focusing ability.

Versatile and useful Zoom Range 17-70; Image stabilization; Fast at wide angle; Smooth bokeh; Close focus

Annoying Manual Focus switch; A touch soft at wide apertures; No weather sealing

This excellent lens has been used for portrait work and landscapes. I love the quick focus and feel of quality that it just oozes and I cannot find any fault in it. I would buy again and would certainly recommend it.

Durable; Great Features; Great Picture Quality; Lightweight; Simple Controls

I bought it used at 211 pounds and for that price the lens is superb. The quality of the image is great and focus perfect & fast on my Nikon D7500. Much sharper than my old Nikon 16-85mm lens.

Flipkart, as usual, delivered it before the delivery date. So I am a happy customer. I am now using the lens for many days now. It feels sturdy. It is sharp throughout the focal length and aperture wide open. It doesn't lose contrast even on heavily backlit scene.

I have been using this lens quite a bit now and find it ti be flawless. Very well made and sturdy but a bit heavy but I don't mind. I would recommend this lens to any amateur photograph.

It has been used mostly for videos. The HSM motor for video is excellent. There is no noise when lens autofocuses. I have several Sigma HSM lenses and all work as well or better than advertised. I've used them on commercial video shoots and they have been excellent.

Consistent Output; Durable; Easily Interchangeable; Lightweight; Nice Bokeh

Heavy

As meantioned in the description Wonderful all round lens with excellent low light imaging.