Quote:
Originally Posted by gregbradley
Its just real estate size of the sensor capturing more photons.
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Surely it's about pixel size and not sensor size. For example, a 8x8µm pixel will collect the same amount of light whether it's part of an APS-C or a FF sensor.
In general APS-C sensors tend to have smaller pixels than FF sensors but that doesn't have to always be the case.
EDIT: for example the fuji x100 with an APS-C sized sensor has slightly larger pixels than a Canon 5DmkII. I'm sure there are many other, better, examples but this is one I know of.