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.
G On Jan 23, 2007, at 1:43 PM, Peter Lacus wrote: > Well, I noticed strange coloured effects on some of the pictures taken > with my istDs & F50/1.7. Apparently anti-aliasing filter is not 100% > effective solution. Take a look at these examples - these are crops > from > the following frame: > > http://picasaweb.google.co.uk/placus/Pentax/photo? > authkey=3N71J2CknRo#5023335575106229714 > > 1. Pentax Photo Laboratory conversion, default settings. If you take a > closer look at the radiator mask of the London cab, you can see some > rainbow effects which obviously shouldn't be there. > > http://picasaweb.google.co.uk/placus/Pentax/photo? > authkey=3N71J2CknRo#5023335639530739170 > > 2. On the Zoner Photo Studio conversion > > http://picasaweb.google.co.uk/placus/Pentax/photo? > authkey=3N71J2CknRo#5023335665300542962 > > these effects are not so pronounced as the conversion seems to be less > sharp and contrasty (also default settings), nevertheless they are > still > visible. > > Even ACR with its magical Color Noise Reduction Tool failed to correct > these artifacts completely. What do you do when it occurs to you? > Use of > lower quality lens would probably help as such lens will provide > additional anti-aliasing filter on its own, but I don't believe that > those are so-called digitally optimized lenses... :-) > > Cheers, > > Peter -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net
