Check out http://www.tbray.org/ongoing/When/201x/2011/06/01/-big/RUNE0790.jpg.html
Look at the green bokeh-fied background and observe the obvious lines that look like elevation lines on a map, let's call them "bars", as the green brightness drops off. They ain't there in the .dng, and after the first cut, I specified 100% JPG quality and they're still obvious. It gets weird... I took a screen grab of the Lightroom window, in which none of those bars are visible, and saved to a .png file, using built-in OS X facilities, the PNG created by Preview. Obvious bars! I put it online at http://www.tbray.org/tmp/screen-grab.png - I thought .png was uncompressed! I'm sure that a silky-smooth jpg of this picture could be created. But I don't know how. -Tim -- 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.
