Some owners of the Galaxy S23 and Galaxy S23+ have been complaining of a soft area in their photos, something that came to be known as the “banana blur” due to its shape. It didn’t affect everyone, but those that had it were not thrilled that their new 50MP flagship camera had an issue. Here are some example photos by Samsung Community member s9tralala that illustrate the issue: Some Galaxy S23 and S23+ units exhibit a "banana blur" when taking photos from up close It seems that Samsung has now acknowledged the issue – there is a post on the Samsung Poland community forum...
Source: https://www.gsmarena.com/samsung_is_working_on_a_fix_for_blurry_photos_from_the_galaxy_s23_and_s23-news-58753.php