Eyesight
Eyesight is the 3D renderer integrated into BrickLink Studio for creating photorealistic images.
Another renderer integrated in that tool is POV-Ray.
Eyesight is a command-line tool spawned by Studio when you are triggering a rendering from its user interface.
It can be run standalone manually if you specify the correct options.
Invoke eyesight
on the command line without options to see a list of all available options.