Archived posting to the Leica Users Group, 2012/09/03
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]Aah I see that Paul Roark , who is an acknowledged leader and expert in exactly this area has already comprehensively responded on this.... Always scroll down before posting ;-) Cheers, Geoff http://www.pbase.com/hoppyman On 4 September 2012 06:43, Geoff Hopkinson <hopsternew at gmail.com> wrote: > The comment on the Epson printers using small amounts of colour ink for BW > is really only a distraction in the discussion on M9 or M Monochrom files. > That is to say it is normal for any grey toned (neutral) image. > A pure carbon on cotton rag (with no Optical Brightening Agent) print is > not perfectly neutral because the paper is not nor is the 'black' of the > carbon pigment. Nor do they need to be of course. That's not to denigrate > how wonderful those can be but it is a silly irrelevance regarding the > camera differences. Any file however developed can of course then be > converted to monochrome. > > Cheers, > Geoff > http://www.pbase.com/hoppyman > > > > On 4 September 2012 02:54, Henning Wulff <henningw at archiphoto.com> > wrote: > >> Erwin has this statement here: >> >> "The Monochrom produces absolutely neutral monochrome tones. The separate >> RGB values are identical when looked at in a post processing program. When >> you take a M9 image file and transfer it to black and white there is >> always >> a slight color cast. It is well-known that even the Epson 3800, when set >> to >> bw-printing, will add slight amounts of color ink. One can safely claim >> that the Monochrom is the only digital 35 mm camera that delivers pure >> neutral tones, identical to the ones you get when using silver-halide >> emulsions." >> >> If you take an M9 file, do whatever channel mixing suits you or what >> Silver EFEX produces, and then change the file to a 16bit monochrome file, >> there is no more RGB information and the M9 file winds up being as >> neutral >> as the MM file. I don't know what he's thinking in that sentence. He must >> be talking about files straight from the camera. >> >> The other stuff is fairly clear and seems straighforward. >> >> I would add that beyond the added detail and the better ISO/noise >> relationship the separation of tones is much better in the MM files. In >> fact, in normal shooting (not extreme enlargement or ISO) I would say that >> is the main advantage of the files in my estimation. >> >> And as Tina mentioned, the psychological mindset that comes with knowing >> that the camera can produce nothing except fine B&W files. >> >> Henning >> >> >> >> On 2012-09-03, at 3:09 AM, A. Lal wrote: >> >> > >> > >> http://www.imx.nl/photo/leica/camera/styled-8/M%20Monochrom.htmlhttp://www.imx.nl/photo/leica/camera/styled-8/M%20Monochrom.html >> > >> > _______________________________________________ >> > Leica Users Group. >> > See http://leica-users.org/mailman/listinfo/lug for more information >> > >> >> >> Henning Wulff >> henningw at archiphoto.com >> >> >> >> >> >> _______________________________________________ >> Leica Users Group. >> See http://leica-users.org/mailman/listinfo/lug for more information >> > >