Anybody knows what is the range of Fuji Astia 100F ? I find that Astia has low enough contrast for me so I would like to compare that with *ist D. Did anybody use Astia before *ist D ? What are the differences ?
----- Original Message ----- From: "J. C. O'Connell" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Friday, November 05, 2004 10:28 AM Subject: RE: USAF target and resolution tests > Here is a good page by a guy who ran tests. > http://www.path.unimelb.edu.au/~bernardk/tutorials/360/technical/hdri/ > > He puts the dymanic range of reala color > film at about 15 stops. So that is > dramatically better than 11 you state > and I have read some of the current > DSLRs are actually about 9 which is virtually same as > a good slide film & not as good as a good > color neg film in terms of maximum recordable > dynamic range. > > Coindidentally, 15 stops is the same maximum range > as human vision of a given scene (doe not > take into account long term range extension > of dark adjusted eyesight at low light levels or maximum stop > down of pupil aperture at high light levels). > > JCO > > -----Original Message----- > From: William Robb [mailto:[EMAIL PROTECTED] > Sent: Friday, November 05, 2004 9:43 AM > To: Pentax Discuss > Subject: Re: USAF target and resolution tests > > > > ----- Original Message ----- > From: "J. C. O'Connell" > Subject: RE: USAF target and resolution tests > > > > > What I was referring to about specialized films is that super low > > contrast films could have a greater DYNAMIC RANGE than digital for > > extremely contrasty scenes and super high contrast films could have > > a better amplitude > > resolution (bit depth) for extremely low contrast scenes than > > digital. > > You'll need to come up with some facts before you have credibility on > this one. You are a self professed non user of high quality digital > imaging technology. What you are referring to may or may not exist. > > OTOH, what does exist at the moment are digital sensors (the istD has > one of these) with an 11 stop range. > See > http://www.normankoren.com/digital_tonality.html > for an explanation. > Even the widest range colour film on the market today would be hard > pressed to come up with an 11 stop dynamic range, I believe 9 stops > is closer to the present state of the art. > > Digital will, of course, get better as the technology evolves. Film is > dead in the water from a technological evolution standpoint. > > William Robb > >
