56 mp fx ?

Started Feb 23, 2013 | Discussions thread
Leo360 Senior Member • Posts: 1,141
Re: Not entirely correct ... :-)

Grevture wrote:

Call me when FX sensors reach something like 200 megapixels, then some lenses will start to have real problems. Until then, don't worry

I doubt it. There are physical constraints that limit how small a photosite can become. Visible light wavelength is about 500nm. You need several wavelengths to facilitate photon absorption. Current Quantum Efficiency (QE) is about 50%, that is every other photon goes through a photosite without  knocking out an electron. Making photosite smaller could reduce QE. Possibly one can get 200MP in FX sized sensor but I would not count on it becoming consumer grade technology.

Leo

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