----- Original Message ----- From: "J. C. O'Connell"
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.
I have a hard time believing that Reala has a 15 stop usable dynamic range.
I do know that a 9 stop range is sufficient to cover most any scene a person is likely to photograph though.
William Robb
