Edit: After researching about it, the problem is on S21 Ultra on Europe version only, I bought mine in the UK and unfortunately received a device with an awful camera. I contacted Samsung that promised to contact in 1 week time to give me a video support but this never happened. I had no choice but to return the phone and ask the refund. I expected more from Samsung.
A detailed side by side on US x EU versions video: https://youtu.be/rsLJLk3nx8k
-----------------------------------------------------------------------------
I really think my phone has a hardware problem is not possible that a phone ranked on top of pixel 5 and iPhone 12 max pro is not taking simple photos and videos indoor with good light, but that's what I'm experiencing. I tried to update the system and the camera configurations, but still the same thing:
- Photos: All modes are bad, normal photos are never focused, they don't have details even if I take a 108Mb on a static object like a bottle on top of my table 1 meter away, my old phone takes a incredible better photos. Also the portrait mode just blur the whole photo. The zoom takes photos with a veryyyyyy low resolution, looking more a abstract paint. Well I tried all modes, that's basically the problem present in all.
- Videos: The videos don't have any stabilization, we see jumps on movements, problems on frame rate giving the feeling you are watching a stream in a low connection, and the focus and blur just changes randomly.
Here is some examples, first my daughter playing, in a very slight movement but as you can see all the static points are also blurry, and second photo a button with 100x zoom with focus locked and my arm supported by the table:
I have the same result. Post a photo as example :
