Sigma dp0 Quattro: the power of imagination

 
A 21mm with its angle of view is a lens that easily leads  to be open-minded, every time it occurres:

also distorting out of bubble 
and even so, intentionally   
 
heedless, often wrongly, the easier, direct backlight

but that this sensor solves  with a breathtaking amount of shadow detail,
(nothing more than increasing exposure by one stop)
in what will be the dp0 leit-motiv of this test
 
together with the overall ability to read also in those far diagonals more distant from the plane of focus, where a conventional 21mm is not to be able having detail as on the numbers of the last cabins into this image, even at medium apertures
 
f/5.6