On 20/11/2013 10:36 AM, Steve Cottrell wrote:
http://members.iinet.net.au/~derbyc/13/11/twilight/index.htmlIf you would just like to explain what's going on in number 5, I would be very much obliged.
This is an example of dual dichotomy. or something. bill -- PDML Pentax-Discuss Mail List [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.

