I am thinking of getting a Nikon 50mm f/1.8D for my d50. I am planning on buying better lenses for now but eventually I will ditch my d50 for something better. Right now I have a 18-50mm and a 70-300mm lens by quantaray. I am thinking of getting rid of the 70-300 because I have not been using it much lately other than for macro photography. Will the 50mm work for this purpose too? I know is is a great portrait lens but what about macro stuff?