I LOVE this lens!
I have a D40 which doesn't autofocus with this lens but will be buying a D90 soon which does. I went ahead and ordered it and have been using it on the D40 for a few days now. 5 stars isn't enough to rate the quality of the images that this lens produces. The images are very sharp, the colors terrific and the bokeh extremely pleasant. And I haven't found the lack of autofocus with the D40 to be a major issue either. With a lens of this speed I've found it easy to focus even in dim light.

This lens will stay on my camera most of the time.

If you are debating buying thinking you can't get much of a lens for ~0 think again and hit the 'buy' button. You won't regret it.

Great Lens for the Cash
I bought this for my wife (so the review will be short on sweet, coz I'm not the one who uses this item), and she is absolutely in love with it. Her Nikon D90 came with a Tamron adjustable lens (or something like that); after 4 months, the lens was causing her camera to freeze and display error messages. In order to save her photos (and perhaps the happy atmosphere in our house?), I bought this lens. It has performed better than the Tamron ever did, and she is really pleased with the... aperture? (I think)

A few pros/cons

Pro:
-Cheap (for a good lens)
-Good Build Quality
-My wife loves it
-My house is filled with happiness
-It takes great pictures

Cons:
No ability to zoom (it is necessary to walk if you want to change the distance... and I guess this could be a pro too - walking is good for your health).

That's about it... My suggestion - if you are considering this lens - just buy it. It does a great job at a nice cost.

Do not let the price fool you
Don't let the low price fool you. This lens is tack sharp, fast focusing, and well built. True, the body is plastic, so what? It is a great prime lens to have in your bag. I shoot aerial photos, used it on a recent job with excellent results mounted on a D3.

Awesome providing your camera will autofocus it!
Heaps of people love this lens, quite rightly its sharp, lightweight and low in distortion and is F1.8.

However I found it a pain to use on a D40 just a quarter of a turn to focus is not enough when you are taking pictures of close-in subjects. It will annoy you! On the D90 it's fine!

However the biggest minus of them all is how unuseful a 50mm lens is on a DX camera i.e. a fixed 75MM is quite long, especially after using the kit lenses which are 18-55 for the D40 or 18-105 for the D90. By all means get one but like me you'll wonder if you should sell it to a mate (where I got mine) as well as I took it all over the World and only once put it on the camera!

The same can be said of the 35 mm AF-s DX though this is strictly a low light close in lens in my opinion and not as good as the 50mm by any chalk though has a built in motor.

Excellent product for the price
Cannot beat the price. Excellent lens for the price. Was very interested to buy 1.4g but due the price bought the 1.8d and am very happy with the performance.