Have you tried clearing the Camera app cache and data by heading into Settings > Apps > Storage > Clear cache, then Clear data, to see if this helps? This won't delete your personal data, so worry not!
Yup, i did that however problem still persist.. I have taken a photo for your reference as well.. Also i'm unable to send for repair in samsung as my phone was bought overseas 'export' set.
No problem. Is the Camera fully up to date? Google Play Store > Click on your profile picture (top-right) > My Apps & Games > Update Camera app. If this doesn't help, please go to: Samsung Members app > Get help > Interactive checks > Phone care > Interactive checks > Test the camera. Is it working fine?
Yes, current camera has the latest version (11.0.02.97) and phone is also in the has the latest update (One UI version 3.1)..
Tried testing the camera in "Samsung Members app, Interactive checks" however same issues.. camera still remain blur
Right, since the camera is still showing this with the interactive check, the next step would be a Factory Reset after you back up your device: How do I perform a factory reset on my mobile device? | Samsung UK
If this still doesn't help, it might be best to have the device checked by an engineer, you can get this booked by contacting Technical Support here.
Apparently i have send it to Singapore Samsung shop for a check and the technician said that the issue is hardware of the rear camera hence it requires replacement. Apart from that, im unable to get it repair for today as my phone was not purchase from Singapore and they will need 'Samsung' to register it in order for local Samsung store to take it my phone for repair.