Archived posting to the Leica Users Group, 2001/03/12
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]How is it that Brightness and Contrast are non-destructive for B&W? I thought e.g. Brightness moves the whole histogram up or down, and throws away bits that over- or under-flow? Wouldn't this affect B&W as much as colour, or am I misinterpreting your statement? The nice thing about Vuescan is that you can get pretty good adjustments in the scanner software and still get high-bit data out. Usually all I have to do in Photoshop is crop, spot, tweak the colour, brightness and contrast in a Levels adjustment layer, sharpen and print. Paul - -----Original Message----- From: Austin Franklin [mailto:austin@darkroom.com] Sent: Monday, March 12, 2001 3:29 PM To: leica-users@mejac.palo-alto.ca.us Subject: RE: [Leica] Trying to improve my scans > The first thing people need to find out is that > Brightness/Contrast are destructive controls, and should never be > used. The second is that Adjustment Layers are Adobe's greatest > gift to photographers. You should do most, if not all, of your adjustments in your scanner software, unless you scan in either raw mode or high-bit mode. If you don't, you will get posterizing. As far as brightness and contrast, that is not true for B&W.