Our 2.7" Field Flattener can be coupled to a variety of different cameras for truly superb photographs or images with your StarFire refractor. Each field flattener is designed for a particular focal length for optimal results. They are not interchangeable. For those wishing to adapt the field flattener to other cameras, keep in mind that the film plane should be 3.4" from the surface of the bayonet flange closest to the camera, +-1/10". (86.4mm +/- 2.5mm) This is true for all 2.7" and 4" field flatteners that we have produced except for the 160 Field Flattener (160FF).
Use the bayonet locking ring to secure your camera into position after you have framed your image. This allows you to rotate the camera to achieve your desired composition.
Fits StarFire EDFS refractor.