I brought the three images into Photoshop and examined them. The foreground where your detail clips are from are underexposed by at least 1 stop. I applied a fairly intense adjustment curve to them, all three, which brought them up to a reasonable level and revealed the moire you noticed.
No, that cannot be removed by Color Noise Reduction alone. A more successful technique for this photo, since the moire color noise is on what ought to be a monochromatic grill structure, is to select just that portion of the image and use a Channel Mixer layer above it to render the grill to monochrome. You can then be tricky and use a little masking and a Curves adjustment layer to completely even out the rendering. Godfrey On Jan 23, 2007, at 5:01 PM, David J Brooks wrote: > Same here. > Dark images with no moire noticed. > > Dave > > On 1/23/07, Peter Lacus <[EMAIL PROTECTED]> wrote: >> Hi Godfrey, >> >>> You might try exposing with about +0.7 to 1.3 EV compensation. These >>> are very dark and dim on my screen, it's almost impossible to see >>> any >>> moire amidst the underexposure noise. >> >> now that's interesting - does anybody else see underexposure noise >> instead of the moire? According to the Photoshop's Eyedropper tool, >> average brightness of the sky is about 70, and of the cab 40 (on a >> 0-100 >> scale) so I suppose it shouldn't be too dark. But my notebook >> screen is >> not calibrated so anything is possible... >> >> With regards to EV compensation - you are probably right, this was >> frame >> No.76 shot on autopilot (apart from manual focusing). I've never used >> matrix metering on my Pentax cameras before (because they didn't >> offer >> any) so the purpose of there shots is also to learn how the camera >> behaves in the various lighting conditions and what results I can >> expect. >> >> Cheers, >> >> Peter >> >> >> -- >> PDML Pentax-Discuss Mail List >> [email protected] >> http://pdml.net/mailman/listinfo/pdml_pdml.net >> > > > -- > Equine Photography > www.caughtinmotion.com > Ontario Canada > > -- > PDML Pentax-Discuss Mail List > [email protected] > http://pdml.net/mailman/listinfo/pdml_pdml.net -- PDML Pentax-Discuss Mail List [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net
