I find this interesting, because I've always wondered what people were referring to when they complained about vertical banding. I've posted 200% sections of the two black shirts. The exposure speed here is probably closer to ISO 1000, even though these were shot at ISO 500. To avoid losing highlights in the background I had to underexpose the foreground a bit and then brighten the shadows and midrange in conversion. I'm sure I pushed them up close to a full stop. With this extreme magnification I can see the colors that make up the black coming apart. I think it's a stretch to call it vertical banding. It's normal digital noise, what you'd get with almost any camera at this high an ISO. The only way I've ever been able to see something that actually looked like banding was shooting the inside of the lens cap and pushing it umpteen stops. Here are the clips: http://photo.net/photodb/photo?photo_id=6635580 http://photo.net/photodb/photo?photo_id=6635578 Paul On Nov 13, 2007, at 7:20 AM, David Savage wrote:
> On Nov 13, 2007 8:55 PM, Paul Stenquist <[EMAIL PROTECTED]> > wrote: >> I don't see the vertical pattern noise. Where do you see it? I'll >> post an enlarged clip. I've examined the tiff at up to 200%. There's >> some conventional noise -- it's ISO 500 -- but nothing that appears >> to create a pattern of any sort. > > Odd. it's quite obvious to me in the dark shirts of the 2 nearest > ladies. > > It's not particularly strong, but the vertical banding is there. > > Cheers, > > Dave > > >>>> http://photo.net/photodb/photo?photo_id=6634039&size=lg > > -- > PDML Pentax-Discuss Mail List > PDML@pdml.net > 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 PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
