Help me understand how 45mp sensor requires a faster shutter speed to stop a a very fast action?
I realise that one need a faster shutter speed to compensate for a camera shake when you shoot a stationary subject. But fast motion..... if your shutter speed is already 1/2000 or higher, why do you need faster with 45Mp sensor? Call me dumb....
I agree with you. This is actually an old issue that's been discussed for ages.
It's really only an issue if you're viewing things at 1:1. If you magnify an image to 1:1 with a minimum shutter speed for a lower resolution sensor, you'll see some motion blur. That's fine for people who aren't pixel peepers, but to take advantage of the higher megapixels, you'd need to increase the shutter speed. In low light, that results in more noise.
This phenomenon is why newer phone sensors like the 48 megapixel Sony sensor use quad bayering. They can produce a sharp image in the day, but it changes to quad bayering(using 4 pixels for a single pixel before going into the normal debayer process) for lowlight to produce only 12 megapixels. The new 108 megapixel Samsung sensor will actually debayer down to 12 megapixels, this one is an extreme example, but I'm excited to see the results.
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