Optical zoom option (which appears on the camera interface as x2, x 4 etc) is camera lense that auto adjusts the focal length to capture details even if magnified compared to manually zooming into an image. Look at the details of the Crystal Mosque captured via optical zoom x 2.
Unedited image of Crystal Mosque in Terengganu captured via optical zoom x 2 of Samsung Galaxy Note 20 Ultra.
I took these on S22+ with 3x zoom
