Archived posting to the Leica Users Group, 2008/05/18
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]I am fiddling around this afternoon with something called UniWB. Essentially you make a custom WB so that the camera jpg histogram looks like the raw histogram (after being converted). I'll let you know if it works. Ken > -----Original Message----- > From: lug-bounces+kcarney1=cox.net@leica-users.org [mailto:lug- > bounces+kcarney1=cox.net@leica-users.org] On Behalf Of Geoff Hopkinson > Sent: Sunday, May 18, 2008 4:22 PM > To: 'Leica Users Group' > Subject: RE: [Leica] IMG: Yosemite too... and Raw exposure for dynamic > range > > Ahaa, I am drawing a HDR guy into my web! > The histogram in the Raw converter shows any clipping more accurately than > the preview on the camera LCD (which uses the jpg conversion). Remember > that > you are editing the linear Raw information there, although the preview is > displaying the gamma corrected output. That means that adjusting the > exposure in the converter is more flexible and powerful than the same type > of adjustment to a TIFF conversion. Gazillions more than a jpg conversion. > Of course the histograms only show the tonal range represented as 256 > values, not the original 1000's. You would need a screen about 3 metres > wide > otherwise! > In LUGspeak - Clipped ain't always clipped. It may not always matter. But > if > you want to extract the maximum tonal range, treat the camera preview as a > broad guide, expose and edit in Raw to use as much of the tonal range as > you > can. > > Cheers > Geoff > http://www.pbase.com/hoppyman/e > http://gallery.leica-users.org/v/gh/ > -----Original Message----- > From: lug-bounces+hoppyman=bigpond.net.au@leica-users.org > [mailto:lug-bounces+hoppyman=bigpond.net.au@leica-users.org] On Behalf Of > Ken Carney > Sent: Monday, 19 May 2008 02:23 > To: 'Leica Users Group' > Subject: RE: [Leica] IMG: Yosemite too... and Raw exposure for dynamic > range > > > Make your exposure for the highlights without any -EV in camera. Ideally > > as > > close to clipped as you can. Keep in mind that the camera histogram is > > from > > the jpg preview, not accurate for the Raw information. > > I don't think I knew that. Wonderful, another calibration process > to learn - at what point does the histogram represent the raw file? I > think > HDR has some promise, but you have to be really careful to avoid a > painterly > look. For subjects that move, you are of course forced to use faux HDR, > i.e., the same raw file opened at different ev's. It can sometimes > enhance > the image with a light touch. Photomatix has a trial copy. > > Ken > > > _______________________________________________ > Leica Users Group. > See http://leica-users.org/mailman/listinfo/lug for more information > > > > _______________________________________________ > Leica Users Group. > See http://leica-users.org/mailman/listinfo/lug for more information