Re: ExpoDisc: Overpriced gadget for suckers?

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At 10:59 AM 10/15/2005, Terry wrote:
I can go into the raw file converter and change it after the fact, by altering the ISO setting? I dont think so, not and get a good print.
It's important to separate what happens before the sensor records the 
image and after the sensor records the image.  The amount of light 
hitting the sensor is controlled before the image is taken, by ISO, 
aperture, and shutter speed.  Everything else, including white 
balance and contrast/sharpness/hue settings happen 
afterwards.  Anything that is changed afterwards is completely 
controllable regardless of the settings in the camera (for a RAW 
image), which is why you are wrong about the WB.  However, there is 
generally more exposure latitude with a RAW image than a camera-produced jpg.

Jeff Spirer
Photos: http://www.spirer.com
One People: http://www.onepeople.com/
Surfaces and Marks: http://www.withoutgrass.com

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