RX100: What Did Sony Leave Out to Put 20 MP In?

What could have been improved on the RX100 if Sony had used a smaller 12 or 16 megapixel sensor with the same pixel density?

Wider or longer lens? Better image quality? Smaller body?

Every camera design is an exercise in tradeoffs. But 20 MP seems more than needed, even for an interchangeable lens camera, let alone a pocketable one.

Did Sony sell out more important features to play the megapixel marketing game?

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