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Old August 6th 06, 02:34 PM posted to rec.photo.digital
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Default Measurung dynamic range...


Volker Hetzer wrote:
Hi!
I'd like to measure the dynamic range of my digicam.
How would I go about it?
Are there special targets for this?

Lots of Greetings!
Volker
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For email replies, please substitute the obvious.


Really measuring dynamic range is quite a difficult job. Part of the
problem is that there are two different definitions of dynamic range.
A second is that one must have a camera and software to use RAW file
format.

One quick and dirty test is to shoot a pic with lens cap on.

Using a photo editor, poke around and sample what appears to be lighter
areas- noise. Take a bunch of pixel brightness values (using color
picker). Average these values by squaring each value and summing, then
take square root of total. This will give you the noise level.