Archived posting to the Leica Users Group, 2008/04/24
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]What is really needed is a wider bracket amount than two or three stops. With cameras getting up to ten frames a second you could do a five stop bracket from five under to five over in less than a second. Even if a tripod is required you could vastly eliminate the ghost people this way. On Thu, Apr 24, 2008 at 4:00 PM, Henning Wulff <henningw@archiphoto.com> wrote: > 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 > -- Don don.dory@gmail.com