1.This excellent quality rail is used for all digital and film DSLR cameras
2.Compatible with most Nikon, Minolta and Pentax macro and EOS bellows
3.Macro shot extension tubes, or macro lenses such as the Canon FD and FL
4.Smooth rack and pinion movement provides extremely fine focusing adjustments
5.Made of aluminum,designed with Positive locking knobs assure rock-steady focus
6.Great for Close-up Shooting,like flower,insect,animal,ceremony,etc.