Perhaps because there's more to a camera than just the sensor alone? IIRC the main reasons for panning the earlier Sigma cameras had a lot to do with their ergonomics and responsiveness as picture taking machines and not much to do with the sensor performance.
|Owens Valley Milky Way by ed rader|
from Sign, sign, everywhere a sign..
|Break by Hank3152|
from Motion blur
|Camp by T bird|
from A Big Year - birds
|The Maasai Shepherd by cgravel|
from - African Man - (Portrait in Black and White + A Border)