20.38mm f/3.95
Distorsion: less than 1% barrel (hard to believe)
Light falloff at 5.6: 2.8 stops
"This tiny lens delivered outstanding central sharpness even wide-open. Edge sharpness maximized at f/8 and overall performance held through f/11. (...)
Flare was well-controlled and slight barrel distorsion noted but not excessive for a 20mm WA."
Resolution center: 60, 60, 60, 68, 54, 48 Resolution corner: 30, 34, 43, 38, 38, 34
Contrast center: 67, 73, 75, 77, 62, 54 Contrast corner: 33, 40, 44, 46, 24, 32
Cheers,
Andre
