APSC vs Full Frame? Image quality differences?

Hi,

as you said, when printing big - almost billboard sized. But as Nord already commented, there may be some subtile advantages of the FF when it comes to higher ISO performance due to the larger pixels - and for the 800e the absence of the AA filter and the MP count, but not necessarily related to the form factor APS-C vs. FF.

When I consider though which high ISO performance has been achieved on the tiny sensor (yet) of the RX100 with its 20MP I wouldn't been surprised when the next generation of APS-C sensors provides both better high ISO performance (probably a combination od sensor and processing devellopments) and higher MP. The choice among APS-C and FF is much more a convenience factor (everything smaller and lighter) than potentials / limitation in the image capture process.

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Cheers, Michael Fritzen