Rear camera extremely blurry?

[Android Central Question]

Yesterday night, I downgraded my Samsung Galaxy J5 (15) from Marshmallow 6.0.1 to Lollipop 5.0.1 Version. Before that, My phone camera was working very good. But after the downgrade Rear camera is extremely blurry. When taking photos, the camera tries to focus and refocus continuously, and never actually focuses. Its happening for both photo and video. The only mode that's not blurry is Selfie mode.

So, My Question is:
(1) Is this happening for downgrade the OS.
(2) How to fix this?

Thanks in Advance.

 

[B. Diddy]

Welcome to Android Central! Are you certain you used the firmware for your exact variant? If you installed the firmware for a different variant, that can cause various problems.