I bought 2 casing for Z1. But I realized that with the casing on the phone, every time when I take pictures with flash, the pictures appear to be more whitish... Sometimes it happens, sometimes not. I tried taking the same shot without the casing and is perfectly ok. Wonder if the camera hole opening in the casing is blocking the flash because the opening is quite close to the camera flash? But at times, the pictures appear to be ok. Don't know what's wrong, phone or casing? Anyone experience this?