Originally posted by GMC
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Here is the problem with the first approach you explained. The timelapse HDR has been done with success however only with wide shots of scenery. However it doesn't work well when there are any sort of moving objects. The HDR is a layer of photos that combine their dynamic ranges. If there is any movement in the photos you get a lot of blur and a lot of times I have found a lot of artifacts that are tough or impossible to remove. That is just with one frame so you could imagine a minute worth of video.
The problem with the second approach about the 60fps would still leave a blur effect by changing the exposure time you would capture blur with anything moving. Then you would be back to the same problem as above. I think it would have to be a completely different idea of how sensors work. Basically a sensor so sensitive that it is able to capture the low dark areas without blur. And a camera capable of just keeping the shadow detail on that particular plate then getting rid of everything else and replacing it with detail of the highlights on another plate. Basically a sensor that can have simultaneously 2 or more different dynamic ranges. That's why I think it would need to be a 3 layered sensor that is able to capture different ranges on each layer.
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