This is a thread I've read on another forum with this answer being particularly useful and relevant.
From androidcentral.com/samsung-galaxy-note-20-note-20-ultra/1009585-why-cant-i-focus-closely-my-note-20-...
“ The larger image sensor combined with the large F/1.8 aperture creates a depth of field that is more shallow than any other cell phone to date. The camera looks and behaves more like an actual camera than traditional cell phone cameras.
When you take an image close up that depth of field becomes even more shallow, anything that isn't within that narrow plane of focus becomes blurred naturally. Taking a photo of something flat like your tablet screen the center point of focus is closer to the image sensor than anything towards the edges which is why they look out of focus.
The regular Note 20 and the S20/S20+ don't use the large image sensor found in the S20U/N20U which allows the depth of field to be greater allowing more to remain in focus when you take a close up image. ”
Daily Driver > Samsung Galaxy s²² Ultra 256Gb in Phantom Black.
The advice I offer is my own and does not represent Samsung’s position.
I have no affiliation with Samsung.
