Our family's synths!
To see 3-D, press the P key to rotate between pictures, 3-D and pictures, and 3-D.
Press the 3 dots to switch between different 3-D groups. Press the group of squares to see the groups of 3-D images. Click an image and then "3-D" to see the image alongside others in 3-D.
To fullscreen, press the square at the bottom of the screen to switch between fullscreen and window.