I had originally intended to only use this lens on my Nikon F2 Film Camera. Since it is a replica of a very old lens, I though it only fitting to me used on a film camera. But yesterday, in the rain, in Vermont, I decided to give it a go on my digital camera. This lens has a huge learning curve, and it is HEAVY and you can only focus it in manual with a little twist screw. It actually is easier to focus it with the F2 because that camera is made to use manual focus and has a handy split screen to see what is in focus. So that was much harder with the digital camera, but what really helped me was to see if the image was exposed correctly quickly as I could see each image and make adjustments in real time without the use of a light meter (you can' t get a reading through the lens even with a digital camera) so in the case of standing under a covered wooden bridge, while the kids played in the water with their inner tubes in the pouring rain... I decided to try it digitally. I love how you can see the beautiful swirly bokah that the lens is known for in these images, and I love the combination of the swirly bokah and the colorful tubes and the pouring rain.... It is my first try at this. I think I will go back to using it mostly on my grandfather Julius's F2... but it was fun to give it a try with the D610!