The Forest Photography of Jürgen Heckel:
'via Blog this'
I WILL POST INTERMITTENT AND, HOPEFULLY, INTERESTING PHOTOGRAPHS, PHOTOGRAPHERS, AND OPINIONS. IF I REALLY LIKE IT I WILL POST IT. "Spherical aberration is an optical effect observed in an optical device (lens, mirror, etc.) that occurs due to the increased refraction of light rays when they strike a lens or a reflection of light rays when they strike a mirror near its edge, in comparison with those that strike nearer the center."