If you're measuring a camera's dynamic range, you do so through the medium that you're recording to...RAW stills, Jpeg stills and video from the same DSLR are going to have different amounts of dynamic range because of the exact amount of the sensor being used, and how the data is processed. When the folks at Red measure the MX sensor's dynamic range, they're looking at a compressed REDCODE file, not a direct uncompressed feed from the sensor...it's just logical to use the medium you're recording to. It does you no good to theoretically have such and such number of stops of dynamic range if you don't actually get that in the medium you're shooting to.
Latitude refers to, as you said, how much you can change the exposure in post. You will have better latitude when you have better dynamic range, but latitude also depends on the exact shot and environment. If the lightest part of the scene comes out exactly 100% white, and the darkest thing comes out 0% black then you have no latitude. However, you have significantly more latitude if the lightest part of a scene comes out 60% and the darkest 40%. And depending on how you expose you may have more latitude in the highlights or more in the shadows. It just depends on the context and variables. But the more dynamic range you have, the more latitude you'll get...latitude is innately dependent on dynamic range.
They're closing in...
This one does full 1080 at 24p, but not any type of slow-mo. And it has complete autofocus ability in video.
I still don't think the SLR thing is the answer for me, but when is this thing going to be announced so a bunch of us don't get sick of waiting and spend the money somewhere else?
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