Light painting with Olympus
Nov 6, 2021 13:29:48 #
wdross wrote:
Most of us know about the mechanical rolling shutter from our film days. It always made for some very speedy looking bike shots with "oval" wheels. Now in the digital age there is still a mechanical shutter that still can do that along with a electronic shutter version of it too (looks different from the mechanical one too). A global shutter will keep the wheels round and the tennis rackets straight.
A "global" shutter is an electronic shutter. I wondered why it took so long to develop, as it seemed to me it would be easy to do electronically. I'm not well versed in camera architecture but I believe they usually read out the bits in a serial fashion, by row. The global shutter would require a parallel interface, which is the brute force method, expensive $$, or some way to "freeze" the pixel, to keep it from changing. So I believe it's been a bit of an engineering development. I am interested in how it's done and I wonder if BSI sensor topology has helped with the development.
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