Please check the following:
1.Only install the peephole that came with your camera. If you use a standard peephole that could cause the image to be distorted and out of focus.
2.Make sure the protective film has been removed from the lens, if not remove it.
3.Check if the peephole or lens are dirty, if there is a fingerprint on the lens then your camera might appear out of focus.
If the protective film has been removed and your peephole and lens are clean then contact customer service at email@example.com.