On Mon, Aug 20, 2012 at 10:27 AM, Godfrey DiGiorgi <[email protected]> wrote: > With virtually all the data in the blue channel, typically the > noisiest, it's no wonder the noise filtering algorithms are bent out > of shape. ;-) There's virtually no G channel at all (should be half > the data) and only 5% of the normal complement of R channel. > > I downloaded four of the PEFs and the catalog and played with them on > two different directions: > > - to create a false color rendering, I started by manipulating the > Tone Curve on the channels to spread out the range of values in the R > and G channels, then did a bunch of tweaking in the HSV panels. The > Hue and Saturation panels in particular proved very very sensitive > within certain ranges. I reached what I thought was an interesting if > odd false color look and applied it to a vcopy of the other three > files. It worked pretty well, but needs more development work. > > - to create a monochrome rendering, I started with the camera > calibration and changed the basic camera mix feeding into the other > tools. Then some small modifications in the Basic and HSV panels > neutralized tones. > > With either of these renderings, I'd output the results as is to TIFF > files and do any further editing in the TIFF RGB space, rather than > with the tools operating on the raw data—the settings are too fragile > to give much adjustment range at this point. If I'd thought of it last > night, I'd have opened the Adobe Profile Editor and created a custom > camera calibration to do what I did in the Camera Calibration panel > ... It's more precise and has more range than the panel's tools.
I sent the catalog containing the specifics to Larry, but since we're talking about it here I thought others might like to see what my rendering experiments looked like. This link will show you a 4x3 picture grid, first column are four of the images processed at the defaults in Lightroom, second column shows the false color rendering, third column the monochrome rendering. I don't consider them finished work by any means, just where my experiments were going. https://dl.dropbox.com/u/25268645/colen-blue-pix.jpg -- Godfrey godfreydigiorgi.posterous.com -- 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.
