I've been beginning to try manual lenses on my D2X. And so far I am very happy with the results. I will note that trying to focus on toddlers with such a lens takes an amazing amount of patience and practice, but I am getting there. Here are a few crop examples. Not meant to be final images, just examples of what this lens is doing for me. I find the contrast is better, detail looks more real, etc. than similar lenses I've tried. I would guess the rather simple design is why. These are both shot with an SB800 mounted in a small softbox.