# Canon 10D Dynamic Range

Discussion in 'Digital Photography' started by JPS, Feb 29, 2004.

1. ### JPSGuest

JPS, Feb 29, 2004

2. ### Charles SchulerGuest

19 x (1/3) = 6.33

Charles Schuler, Feb 29, 2004

Hi!
Top one: Last dist dinguishable one is 16 + 3*2 = 22
Bottom strip: Last distingishable one is 1 - 3*2 = -5

22 + (-5) = 27
27 / 3 = 9

;-))

The Argument is: If you underexpose 2 stops, you can still distingish on
the dark side to "16" in units of third stops. If you use the same
target and overexpose by two stops, you can still distinguish to "1" in
the same units. So "16" was really "22" for normal exposure, only that
your monitor/eye does not see the difference above "B" = 16. On the
highlight side, the target does not provide further logarithmic steps
between "A"="0" and "1". These are filled in by the over-exposure trick
and reveal that the camera can still distinguish 5/3 more f-stops in there.

4. ### JPSGuest

In message <>,
Hello! Did you read the note under the image? The adjusted numbers?

The range is -5 to 24, at a minimum.
--

JPS, Mar 1, 2004
5. ### LionelGuest

Kibo informs me that stated that:
Thanks John, very useful information.

Lionel, Mar 1, 2004