Archived posting to the Leica Users Group, 2001/03/07
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]> Subject: Re: [Leica] Chicago Auto Show 2001 Photos > From: Mark Rabiner <mark@rabiner.cncoffice.com> > Date: Tue, 06 Mar 2001 16:59:46 -0800 > References: <3b.115c2204.27d6db5f@aol.com> > > > > http://www.photo.net/photodb/presentation.tcl?presentation_id=67273 > > > > I think what i am seeing is grain: combined with heavy Jpeging creating a > mosaic > which is a distraction when you look into the shadows. Nice cars but I'd love > to see the original prints! If you saw prints of these, you'd see similar sized chunks of grain, but more subdued, random, and pleasing to look at. The oatmeal in the shadows is grain aliasing. Scans are good, IMO, but the pixels are having trouble stumbling over the boundaries of the grain. Life isn't fair: The scanner has enough resolution to do the negative justice, but details below the level necessary for our eyes don't mate with the hardware. Pixel size is close to grain size, so interference patterns result, as with a herringbone tweed jacket on television. A scanner hardware issue -- they all do it. In the future, when we get to a zone where pixels are several to a grain, this problem will diminish to a second or third-order concern, or so I'm told, and we'll no longer have to worry about it. Mostly a problem with black and white. Check out: http://www.photoscientia.co.uk/Grain.htm - -A L