hey! thank you all for your quick reply it is very helpfull indeed. but Vetri, yes artificial retinas would be very helpfull, I can't find any. So if anyone finds any please send me a message at oksuzenakos@hotmail.com or at burntmail.com Is not to much to ask is it..? Anyway, has any of you heard of LEP (Lateral -effect photodiodes). are they on sale anywhere - this could very helpfull also. Thanks again for your time. Regards, Elias Nakos P.S I googled for LEPs and Artificial Silican Retinas but no luck on where to buy them. -- http://www.piclist.com#nomail Going offline? Don't AutoReply us! email listserv@mitvma.mit.edu with SET PICList DIGEST in the body