« on: March 28, 2012, 02:14:49 PM »
Example: Let's say D800 has 14 stops and 5D3 12 stops. Using mild simplification, the D800 can represent the entire 14-bit range of [0,16383] and 5D3 only the range of [4,16383]. I'd assume the D800 now gets a significantly higher score in "objective" rating for DR, since after all, it has those two extra stops. But those extra stops are represented by values 0, 1, 2 and 3. Hardly a significant advantage, I'd say. Nor is it reason to moan that Canon have done nothing in 3,5 years since the 5D2 also had 12 stops.
For those who aren't as technically inclined in things electronic, what does this mean in plain English ?
I understand that the DR is 14 stops. My point is that the bottom stops are not usable in any practical situation since the quantization destroys any detail at that level. You can dither so that the average quantization error over the whole frame is zero, but still the local pixels have little to do with the actual frame you were trying to capture.
Same question as above. The reason I ask is that I see all these people crying or rejoicing that the D800 crushes the 5DII and III by 2.5 stops of DR. Perhaps I don't have discriminating eyes, but I'm having an awfully hard time distinguishing any substantial advantage of the Nikon's DR in high contrast sample images. I'd think that 2-3 stops of DR would be very obvious to the naked eye, even if it's untrained.