Archived posting to the Leica Users Group, 2004/04/28
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]No money in it and not that much to it. On my camera (a Kodak 14n), the histogram is already graduated in half stops, including into the ERI range. If I see that the histo is too far to the left, I just crank up the exposure counting the hash marks. Not really much to it. For Mark's system to work on an SLR, you would need to shoot two exposures. Frankly, I would not want a computer setting the histogram, because it does not know what the scene is supposed to look like (the fact that the histogram touches the right side is insignificant; the real game is in the distribution - how much of the picture is highlight? Camera has no idea. And on digital, just like film, ISO is not linear. It's the amount of electrical gain, and the response is anything but linear - as is the calibration. Quoting Don Dory <dorysrus@mindspring.com>: > I think maybe Mark has hit on a truly marvelous idea for digital. Auto > iso: photographer sets the shutter and aperture and the camera sets the > appropriate ISO based on users defined limits on the histogram. > > There could be real money in this. > > No, I am not being cute. How many times have we all fought to hold F1 > or F1.4 with a decent shutter speed. How many times have we wanted a > certain aperture to hold specific details in focus and exclude others > but didn't want to drag a tripod two miles up hill so we could use the > inevitable slow shutter speed. With digital, there are many fewer > compromises with higher ISO's. > > Don > dorysrus@mindspring.com > > > _______________________________________________ > Leica Users Group. > See http://leica-users.org/mailman/listinfo/lug for more information >