On Sun, Aug 25, 2013 at 02:36:25AM -0700, Larry Colen wrote: > It turns out that I missed the band that sounded the most interesting, > so I decided it was a good chance to practice with the IR rig. Some were > taken with the flash, some without. At some point I should probably > experiment > with using a green filter to compensate for the IR magenta tint in the full > spectrum photos.
One weird thing about the way the IR conversion works is that the red and blue channels are sensitive to IR, but the green isn't. I'd like to see the results of a camera where either all the channels were, in which case the IR flash would just desaturate things, or one where just the red channel were. This experimentation is giving me some ideas about what other colorspaces might be like. What would things look like without color sensitivity to red, or blue. Rather than just disabling the channel, convert it to B&W so you get the luminence data, just not the color data. Also, what would things look like if instead or red, green and blue, our sensitivity were centered around Orange or Yellow and Indigo. > > Most were taken with the 18-250, a few with the 8mm bowers. > > http://www.flickriver.com/photos/ellarsee/sets/72157635224717952/ > > Someone took the sign literally: > http://www.flickr.com/photos/ellarsee/9587191657/ > > This sign deserves being photographed with a normal visible spectrum > camera: > http://www.flickr.com/photos/ellarsee/9589996112/ > > -- > Larry Colen [email protected] http://red4est.com/lrc > > > -- > 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. -- Larry Colen [email protected] http://red4est.com/lrc -- 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.
