The 1.8D is an awesome lens. It was my first lens with the D3100...lots of manual focusing. Soon after, I sold it for a 1.8G. Then we got a pair of D700s, and we bought it again for my wife's D700. Now it's one of four lenses we use for wedding photography. Here's a sample image from back when I used it on the D3100...
full set's here: http://www.mikeandfrida.com/2011/09/paige-in-bloomington.html
dekalb wedding photography
chicago wedding photographer