This was shot as a test of an old (circa 1980) 20mm Nikkor f/3.5 manual focus lens on a Nikon D700 camera. I'm not sure about the actual f-stop used for the exposure because the lens is unable to transmit f-stop data to the body, so it is not recorded correctly in the EXIF data. By setting the D700 on aperture priority, I was able to use auto exposure. And, although auto focus will not work with this lens, I was able to use the green focusing indicator in the D700 viewfinder to help focus the lens.