Galaxy S20 Ultra: Captured subjects are blurred and focus is not exact?
The definition of photos may be affected by distance between device and subjects when taking photos. If you take picture the objects to too close distances that Auto Focus may not be available normally, taken subjects may be blur and unclear.
Especially if you don’t keep the proper distances when shooting the photos, videos with high resolution or high zoom ratio, Auto Focus
feature doesn’t work properly and it causes the unclear and blur images in the end.
So, it is recommended that you do not position subjects within too close distances from device to take clear photos and keep the proper *distances between device and object. (This distances differ by device and camera lens. Refer the values of below table)
And as currently smart phones had being used spherical lens for device camera, distortion may differ by lens type and it severely occurs when angle of view is wider and distance up to shooting object is shorter. Additionally if you cover the device’s camera part with screen protector, sticker or a cover, covered camera will cause pictures with low quality and photos you take appear blurry.
So please ensure not to use the screen protector which covers the camera part or the screen protector without a specific hole for camera part. Also, clean the camera lens. All Samsung smartphones undergo rigorous internal inspection test, and are always being controlled under Samsung’s high level of quality standards internally.