Twisting Light #20.
Another in the series of the refraction patterns of light through shaped plastic. Here I've been trying to control the resultant pattern and finished up with something which, to me, looks like an exotic optical version of a 'porcupine fish' (you may see something else). In this one I have not used any coloured filters in the light beam, the rainbow patterns (seen large) are formed naturally.
For new viewers: these are analog images formed directly on to film without the use of a camera lens (in the same way as a photogram), of the refraction patterns of light passing through formed and shaped plastics. The fine detail of the diffraction patterns can be seen when viewed large. I do not use Photoshop, only Picasa for minor adjustments.