Even at the onset of mobile phones there were no problems, although you have to press a little stronger, but the phone will not budge and is probably well protected.
For longevity, I can not make a statement, that I will return the shell after one day because when taking pictures with flash, the pictures are heavily overexposed, as if you were photographed with strong backlight. I assume that the leather too much reflects the flash. Since the phone is sitting so firmly (which actually would be an advantage), it is also not really an option, the phone easy to take out of the sheath, when shooting in the dark.
If you want a mobile phone from a manufacturer buys, which is known for good cameras expected from a really not cheap cover for this phone, the camera will not be affected.
Again briefly summarized:
+ High Quality
+ Beautiful processing
+ Mobile budge
Camera (rather said flash) is affected
Although there are more pro than cons would be 3 stars (= not bad) too much, 2-star (= I do not like) are reasonable, especially since the border price for unlimited utility. If the processing is not perfect, I would probably have given only 1 star!