John Graves wrote: > Is the noise the color blotches, (ie, blue on the red label?) I am > still learning what I am looking at and I don't know what is a screen > artifact vs a picture artifact.
That's one part of the noise. Pretty much anything that's blotchy or speckly or uneven in the color rendition is noise, if you're talking about a span of a few to a few dozen pixels. Stuff like vignetting affects the whole image "equally" while noise artifacts are a more localized phenomenon. In the _6400_PS.jpg shot of the wine bottle, look at the red "wax" covering on the neck of the wine bottle, in the upper left hand of the shot. If you check it at full resolution, look closely at the red of the "wax". You'll see at full resolution that it's not all red ... there are "clumps" or "blotches" of blues on the one hand and oranges on the other. That's the noise. It's sort of analogous to the graininess of some B+W films, like TriX pushed to 1600. -- Thanks, DougF (KG4LMZ) -- 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.
