VERY bad image quality from rear camera - faulty?

Hello guys
Yesterday, I rooted and flashed my 610 with cm11 rom. The same day I removed back battery cover and replaced battery.
Today I found out that my rear phone camera has very bad quality. Photos are gross. The rear camera has now circa the same image quality as the front camera.
I already tried factory reset, and also tried to flash CM12 rom. The result was the same.

What do you think that that happend? It is software or hardware related? Did I somehow managed to physically damage the camera lens when I was removing the battery? It is possible to damage camera, while it still performing but with bad image quality?

I added some attachments.
First one is rear camera, the second one is front camera for comparison, and third is rear camera from the outside.
If you zoom it, you can see huge compression.

Thank you

Attached Thumbnails

 


 


 

[guide] how to check for faulty device

Hi everyone ,my Oneplus3 just arrived.I am currently in UK and in a month I return home,in EU.So I wanted to know if my device had any faults so I could ask for replacement.
<B>How to check if your device is good.</B>

Step 1.Disable fingerprint scanner(when in pocket it keeps scanning=battery drain)
Step 2.Charge your phone to 100%.
Step 3.Make a Antutu 3d test.(if your phone gets warmer than 45-50 degrees,you need to replace it)

More later.Suggestions are welcome .