This primitve dinosaur age bird was converted from a still posted by the Madrid Science Museum...
we think it makes a better impression in 3D!
This is the Anachrome overlaid version of the conversion
Leading up to this was the converted side by side pair
Which had been filtered to remove all green & blue from the left eye image (which is placed to the right) and all red from the CYAN (blue-green) image for the right eye
and her placed on the left. This was done originally to allow cross-viewing. In the overlay, the bird's eye was placed at the screen in perfect register.