All lenses project circles; most cameras cut a square or rectangular image out of the middle of the optical pie.
Within a few years of this painting, Vuillard gave up on most of the goals of optical realism.
This drawing may seem pared-down, but its presence as an object is palpable – it is much more than an optical treat.
Well, I had seen his first film, “optical Illusions”, so I knew he was talented and had an original approach.
Strauss-Kahn's sudden, astounding, and very definitive-seeming fall might make an optical illusion of his comeback rise.
At first I thought he had brought his brother with him, but, on rubbing my eyes, I found it was an optical delusion.
She was visited by no more ‘optical illusions’ or ‘cataleptic’ fits.
The whole apparatus may be raised and lowered in the optical axis by means of a screw.
So we are told that soldiers' visions are optical illusions.
The optical industry in this country before the war was in the hands of a few firms.