I have a Nikon 50mm f/1.4 AIS lens which I plan to use with my RED ONE. Evin's review on this lens test is very helpful. I also own a Nikon 85mm f/1.4D AF which I use it as an indoor portrait lens on my DSLR. I'm extremely pleased with it's results. The images are very sharp. The lens also produces much better blur than the 50mm f/1.4 AIS due to a different aperture blade design. It also has an AF/MF selection ring for filming work.