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D600 preliminary Photographic Dynamic Range measurement...

ScottChapin

Powder Springs/ATL, US
9070 posts

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"RE: D600 preliminary Photographic Dynamic Range measurements"

ScottChapin Moderator Awarded for his high level skills in various areas, including Aviation and Birds Photography Charter Member
Fri 19-Oct-12 03:04 AM

>I am confused why the zone system used by Ansel Adams 1/2
>century ago is being referenced here.
>Yes, in his system there are 10 stops of light between black
>and white.

I'm referencing it because it traditionally defines the number of stops that we can perceive between the blackest black and whitest white we can see. It's still used to calibrate DR in light meters.

>
>The human eye can decipher 24 stops of light between black and
>white. (Albeit with a change in aperture/ pupil size)

I'm not sure how we can see 24 when there are only 11 in the grey scale. A white object underexposed 10 stops will be black without any detail apparent to the human eye.

>
>A modern A/D converter built in our camera has a dynamic range
>of about 16 stops of light.
>
>A modern monitor may be able to display a dynamic range of 18
>stops.
>
>The better dynamic range of your initial image should help you
>with processing to obtain an image with the best dynamic
>range. This would be true at iso 100 and the benefits are not
>simply relegated to the high iso's where your dynamic range
>finally goes down to 10 stops.
>For instance a camera with poor dynamic range would only
>record black in a shadow where this camera will have detail
>that could be brought out selectively and displayed. The same
>is true to a lesser degree with highlights.
>Ansel Adams had 10 stops in his system. I would think that a
>system with 16 or 18 stops would be more applicable to the
>digital age.
>I have been impressed with my ability to push the images in
>post processing from this camera.
>
>see this link for more info on dynamic range.
>http://www.cambridgeincolour.com/tutorials/dynamic-range.htm
>
>The dynamic range vs iso chart demonstrates near equal
>performance between the D800 and D600.
>The bar chart was confusing for me and I think shows that the
>D800 is significantly better. Does this make sense to
>anyone?

If you are saying that a wider DR enables the camera to see things that the human eye cannot and can be brought out in post, then that does make sense. I wasn't thinking in terms of taking pictures and expecting details in things I cannot see.

I can now think in terms of a wider DR enabling greater recovery from exposure error.

Scott Chapin
Powder Springs, GA, USA

Nikonians Team Member

This is a hot, active topic! D600 preliminary Photographic Dynamic Range measurement... [View all] , bclaff Awarded for multiple contributions for the Resources , Sun 16-Sep-12 03:11 PM
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