> > From: drew <[EMAIL PROTECTED]> > Date: 2008/01/28 Mon PM 08:52:58 GMT > To: Pentax-Discuss Mail List <[email protected]> > Subject: Re: PESO: First attempt at IR > > mike wilson wrote: > >> From: drew <[EMAIL PROTECTED]> > >> No frost that day Mike, trees and grass appear white in Infrared > >> photos,. http://en.wikipedia.org/wiki/Infrared_photography > > > > In B&W IR but are generally red in false colour IR. Which is why I was > > curious. > > > > > > Straight out of the camera everything was strongly red. With software I > white balanced on the grass and swapped the red and blue channels to get > sky blue again. Pretty much to this > http://www.xdeltax.com/tutinfrared/index.html tutorial, but using Linux > tools.
Thanks. Film colour IR can be used as a diagnostic tool for vegetation. Healthy plants are a bright red, with movement towards magenta for the less healthy ones. Looks like simple digital IR is not going to have the same capability. ----------------------------------------- Email sent from www.virginmedia.com/email Virus-checked using McAfee(R) Software and scanned for spam -- 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.
