Scapevision
Well-known
850 camera has something called back illuminated sensor. Back light is the key for scanning.
Not to confuse with light needed to backlight the film, the sensor technology has zero effect on ability to capture your slides or negatives. I use other brand camera to do so, and it works fine. The original question was more of a question of being able to stick the new adapter on any other nikon body. I also assume you can stick it on Canon with an adapter.