Lumia Camera focus/over saturation

[Professor Paradox]

I have a Lumia 630. But there are two issues:

1. The image gets over saturated. I need to touch in the place I wan't focus and then the colors get corrected. But it still looks over saturated. Changing ISO/white balance doesn't help.

2. Infinity focus is blurred. Macro is also blurred and when I put the auto-focus back, the entire screen become blurred. Closing the app and reopening fix this, but sometimes I can't take macro photos.

Thanks and sorry my english.