Jeffery, In diagnosing your problem, I would try first to see if the problem is in the image file or the computer display of the image. With the display resolution or number of colors turned down, you can generate lots of banding. Regards, Bob S.
On Mon, Mar 14, 2011 at 12:36 PM, Jeffery Johnson <[email protected]> wrote: > Thanks Bruce something that I forgot to add in my message is that I am > seeing it in the RAW file and that it is a bit better in the JPEG file. I am > going to play around with the settings and see if perhaps I should tone down > those settings when there is a chance of having the blue sky in the shot. I > will also keep your tips in mind when I am editing the photos. > > -----Original Message----- > From: [email protected] [mailto:[email protected]] On Behalf Of > Bruce Walker > Sent: Monday, March 14, 2011 9:21 AM > To: Pentax-Discuss Mail List > Subject: Re: Blue Sky question > > Checklist of things that may result in you seeing banding in areas of smooth > gradation: > > * shooting JPEG (8-bit images) > * processing with 8-bit software *anywhere* in the workflow (eg ACR > set for 8-bits, PS Elements, Gimp, etc.) > * doing multiple destructive Levels or Curves operations (possible > even with a 16-bit editor) > * image is ultra "clean" (eg you shot it at ISO 100 and there's > absolutely no noise in the image) > * viewing image on a TN LCD monitor > > > Solutions: > > * shoot RAW (12-16 bits) > * use only 16-bit modes throughout the workflow > * use non-destructive editing where possible (eg Lightroom, Smart > Filters in PS) > * minimize destructive edit passes > * intentionally introduce a little random luminance noise to the > image before conversion to JPEG (like fake film grain; can look > very nice if done right) > * view images on an IPS monitor > > > I haven't noticed banding caused by optical filters. Can't say if that > could be a problem myself. > > Where other people view your image is rather out of your control. You could > put a perfect image online but someone viewing it on a crappy laptop's TN > screen could see banding and figure it's your fault. Either ignore that > possibility or use the random luminance noise trick to mask it. > > -bmw > > -- > 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. > > > -- > 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. > -- 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.
