The color does not correspond to 100% of the color of my black Fuji X100 (limited edition), but with black cameras falls not so much on as Silver. There is no optical interference level.
The most important: The camera is now more secure and better in your hand, so you much better can thus take pictures with one hand. Certainly the command dial shutter speed is no longer to use the thumb, but if you do that, you should not buy 'Daumen'auflage. The shutter speed I anyway never operated with the thumb, because even without the support an operation by the thumb is cumbersome. I do not know which camera has my Vorrezensient, but I am fully satisfied. Other functions - except of course the hot shoe - are not restricted.
Installation is easy and the product durable. Do not bother doing the edition also worn on the body.
So a total of 5 star.