Good lens for a GOOD price! I got mine for christmas (but I was planning on buying afterwards so I did my research) Ive only used it a handful of times and it takes some times to get use to but it is worth it!
I use 50mm 1.8D on a d7000. I find it extremely sharp from f2.8 up, though I am not professional so maybe I don't know my 'shit'... It's very versatile and makes you move around and concentrate on framing more than you would with a zoom. I love it.
I'm not sure I'd pay a lot of attention to "konstantingl". It doesn't sound like he's really tried the 1.8D lens out. All he's done is describe it as 'shit' (not the best technical analysis, I'm sure you'll agree).
I have the 50mm 1.8D and I use it with my Nikon D90. It's a sharp lens and is pretty good at focusing. The main differences between the 1.8D and the more modern 1.8G are the following:
- The newer 1.8G is obviously quite a bit more expensive. - The older 1.8D has no autofocus capabilities when used with entry-level cameras that lack an autofocus motor. - The newer 1.8G - They both focus at roughly the same speed, however the newer 1.8G has a silent wave motor allowing for very quiet focusing - The newer 1.8G has an aspherical lens element. - The newer 1.8G has slightly better contrast and sharpness when photos are viewed at 100%.
Honestly, for the price the older 1.8D is a STEAL. It's a good bit of kit to have in your bad. If you're making money from your photos, such as from weddings, there are good reasons so use the newer 1.8G, otherwise, I'd say go for the 1.8D.
You are right that the 50mm f1.8 AF-D is a perfectly good lens and a real bargain. But it is a much better choice for your D90 than the D5100 because the D5100 lacks an autofocus motor for AF-D lenses. Unfortunately the 50mm f1.8 G has disappeared from the marketplace here in the US. They seem to be sold out everywhere.