I think the 20mm 2.8 is a compromise of many things:
1) Sony's starting to sort of understand that people want pancake primes.
2) they are still unable to produce very competitive lens designs on their own (Canon and Fuji have good 22mm f2 and 23mm f2 with a similar size)
3) their own Zeiss...
I bought the RX100 almost a month ago, and after 1200 shots I'm entirely convinced this can be my only camera. The only thing that sometimes limits me is dof control, but for the kind of pictures I do these days that's no big deal. I can't afford to keep anything else at the moment, so I'm...
Another quick test, same thing as the first time but with a Raynox DCR-250 (+8 diopter) held in front of the RX100 lens to increase magnification. This is the closest I could get (don't mind the IQ, it was shot at very high ISO).
I did a quick test with a 1 euro coin (almost exactly the same size as a quarter). RX100 set at wide angle (for maximum magnification) and focusing manually as close as I could. Not close to filling the frame.