@Fuzzit: Is the issue present on all Camera modes/lenses? If so, please dial *#0*# into your telephone keypad, select 'Megacam' from the series of grey tiles, and check to see if the problem persists here. Furthermore, press and hold on the Samsung Members app icon > Diagnostics > Camera, to see if this flags any issues.
To further troubleshoot the issue, please clean the lenses with a soft, clean, lint free microfibre cloth, then head to Settings > Apps > Camera > Force Stop > Storage > Clear Cache > Clear Data.
@Fuzzit: If the issue was present in the hardware tests, then I recommend reaching out to our Help Desk via the link below, where an advisor will be on hand to assist you further, and arrange an engineers inspection.
Please be aware that our warranty covers software and hardware defects, but not instances of physical or liquid damage. If the engineer deems the issue to be the result of any of these factors, then a charge will be applicable to cover the cost of the service. Don't worry though, as any charges will be communicated to you prior any repairs going ahead, allowing you the chance to opt in or out of the service.