Single Lens Shooting also shoots in regular format, along with 360° images. The regular format stores images in 1:1 or 4:3 aspect cropped from the center of the front lens (the opposite side of the shutter), which is useful when you need images outside of 360°.
Aspect Ratio 1:1
This mode widens the angle of view by making the distortion as uniform as possible when developing an image output from a fisheye lens on a flat surface. Equivalent to a focal length of 10.8 mm on 35 mm film at 180° diagonal.
Aspect Ratio 4:3
This mode displays a straight line with as little distortion as possible when expanding an image output from a fisheye lens onto a flat surface. Equivalent to a focal length of 23.6 mm (85° diagonal 35 mm film equivalent).
RICOH THETA Z1
RICOH THETA V
TIPS from Users
RICOH THETA Z1 Single Lens 4:3 Aspect Ratio Setup : THETA 360 Developers from YouTube