Excerpt: I purchased this as a compromise. Sony also makes 30 mm and 100 mm macro lenses. I chose the 50 mm because it was in the middle in terms of price and close-focusing distance. I have played with the lens for a week under less than optimum conditions. I am thinking about switching it for 100 mm lens but am deterred by the added weight of the longer lens. Ideally, I would prefer a macro lens that opens a little wider and is a little sharper.