Some leather cases get in the way of the camera!
#1 The one I got for a couple bucks on ebay, has a hole cut out for the camera that when you have it "opened” to take pictures, bunches up by the top by the antenna like most flip phones do, thus getting in the way of the lens! You’re stuck holding the case down to the phone while you take pics.
#2 I’ve seen one with a clear front that might not get in the way, but will have a piece of protective plastic between the cam and whatever your taking a pic of. It would keep your lens out of harms way, but I’m not sure of the lighting effect the clear plastic would have on the pics.
#3 Then I've seen another one where it has a hole cut out, and a strap that goes over the antenna. Which might hold the case down...