3dtours
30a2f768da
Plain frame 'none' with ratio 4:3 shows the whole sensor at screen width (85 deg FOV, like the built-in app at 23mm equiv); 3:2 crops the two vertical sides, same height and zoom, matching the export crop. The fullscreen-cover plain preview from 7985f25 was a wrong interpretation of the built-in view and made every ratio look identical fullscreen.