Re:The Light L16 – a multi-aperture computational camera
by thrownaway2424 on Thursday October 08, 2015 @11:09AM
(#10353232)
Is there any reason you couldn't do a single-shot HDR with a single sensor, by modulating the sense amplifier gain on a per-pixel (or per-row, or per-column) basis? The ISO sensitivity of a digital camera is just a gain coefficient in some circuit, so it seems like it could be controlled during the readout.
Re:The Light L16 – a multi-aperture computational camera
by moron4hire on Thursday October 08, 2015 @01:08PM
(#10354112)
Composite HDR shots are supposed to be done such that the shutter at the fastest speed properly exposes the highlights and the slowest speed completely blows out on the highlights, but the extremely dark shadows are properly exposed. In other words, it's about filling in the details when overexposure causes amplitude clipping.
How most people end up shooting HDR, however, the component images mostly all have full detail in the shadows and highlights, meaning the final image really not much more than you've described. You can do that with a single shot and a contrast slider.
It is HDR. Multiple exposures means you can capture the full dynamic range in one "shot" and synthesize together the nicely exposed parts of each image.
> I'm curious how much post-processing went into each of these.
I mean, a bunch, but the camera's firmware is doing it. I'm sure typical punch up postprocessing happened for publication, still the interesting dynamic range stuff is happening in the camera.