D200 vs D70 Dynamic Range graph

Started Jan 30, 2006 | Discussions thread
Bill Janes Senior Member • Posts: 1,848
Re: Need transmissive target for true DR

Pierre Sottas wrote:

that number is very low. It seems that ambient shooting conditions
add much variability.

Pierre

Pierre,

Those results are typical for a reflective target where a 100:1 contrast ratio is about all you can expect. To measure the true dynamic range of the camera would require a transmissive target such as a Stouffer step wedge, which I have ordered. The T4410 has a dMax of 4.05 for a contrast ratio of over 10,000:1.

See the imitest site for more details:

http://www.imatest.com/docs/tour_q13.html

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Bill Janes

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