Has anyone tried using a DX format (sensor size 24x16mm) on an film camera (sensor size 36x24mm)?
In effect, I have. At one point I had both the DX D300 and FX D700 which is the same size as a film camera and tried my DX lenses on it.
I have a 18-200mm DX Nikon zoom and I am wondering whether I could use it on the Nikon FE body ( it fits). Ken Rockwell says " It won't work on a film camera: the corners will come out black." Why could I not use PS to crop the black corners?
From 1959 to today, almost all Nikon lenses will fit on all Nikon bodies with very few exceptions—early lenses generally referred to as pre-AI. However, even they can mostly be adapted by a camera repair shop to work. Even with the new little Nikon 1 with its new CX mount, has an adapter for vintage Nikon F-mount lenses. While most can be made to fit, not every body/lens combination offers the full range of features.
Every lens has an image circle it projects. If the circle is smaller than the film or sensor, you will get terminal vignetting outside that circle. The 18-200mm I found, could not cover the whole sensor in the D700 at any focal length or aperture. On the other hand, the 12-24mm had enough coverage to let you do a panoramic composition at 14mm and get pretty much full frame coverage at 16mm to 24mm. The edges at 14-16mm were noticeably soft, but stopped down, it was usable.
The FX cameras have DX mode, which can be set to kick in automatically. In DX mode, they only use the middle of the sensor, so DX lenses work fine. It produces around a 5MP image, and you get the 1.5× crop. As you ask, you most certainly can use full frame and crop in processing, which will give you considerably more flexibility. With the 18-200mm lens for example, you could crop out a square image if you so desired.
With the newest Nikon lenses however—including most, if not all, DX lenses—aperture is controlled by the camera body, making them far less useful on old film bodies. These lenses would have a G or AF-S in their names. The names of Nikon lenses carry a lot of information, and there is a guide to the abbreviations at
Nikon F-mount - Wikipedia, the free encyclopedia