Archived posting to the Leica Users Group, 2008/04/24
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]I can usually get an HDR image with a three-shot auto bracket burst, even hand-held if I don't have or want the tripod -- assuming nothing is moving in the scene, of course. Sometimes I can improve an image by opening the single raw file at, say, -1, 0 and +1 EV and blending. Photomatix Pro is good for this, if used with a light touch. Here is one made from a single raw file in Photomatix: http://gallery.leica-users.org/v/kcarney/mcloud.jpg.html And one made from three files, hand-held: http://gallery.leica-users.org/v/kcarney/mosque.jpg.html Kyle's idea sounds easier. Ken > -----Original Message----- > From: lug-bounces+kcarney1=cox.net@leica-users.org [mailto:lug- > bounces+kcarney1=cox.net@leica-users.org] On Behalf Of Henning Wulff > Sent: Thursday, April 24, 2008 3:00 PM > To: Leica Users Group > Subject: RE: [Leica] Auto HDR -- is nobody paying attention? > > At 12:32 PM -0400 4/24/08, wildlightphoto@earthlink.net wrote: > >Kyle Cassidy <kcassidy@asc.upenn.edu> wrote: > > > >> Light comes through the lens, hits the sensor. As soon as values reach > >> 254 the camera should save a file at that exposure which can then be > >> merged (if necessary) with the master file so that burned highlights > can > >> be salvaged. > > > >Or with 16-bit pixels, 65534 instead of 254. > > > > The limiting factor is dynamic range, not number of bits. The Fuji S5 > addresses that to a limited degree, but not to HDR standards. > > With present sensors and photon acquisition methods it's hard to get > real time greater dynamic range. One possibility might be to actually > do two exposures during the nominal exposure time. Exposure time > would then take on a new meaning, and this clearly wouldn't work when > you need an extremely short exposure, but it should be doable when > you only need 1/125sec. > > > -- > * Henning J. Wulff > /|\ Wulff Photography & Design > /###\ mailto:henningw@archiphoto.com > |[ ]| http://www.archiphoto.com > > _______________________________________________ > Leica Users Group. > See http://leica-users.org/mailman/listinfo/lug for more information