How slow is Panasonic 20mm f1.7?

Hi! Possibly you will not be able to capture flying birds :-D, by in any other situations in works perfect. Along with high speed (f1.7) and remarkable resolution performance this lens is perfectly suitable for day-by-day shooting. I own it for almost two years and I would say about 50%-60% of my pictures taken with this lens. See samples:

http://natalispalette.jimdo.com/photo/panasonic-lumix-g-20-mm-f-1-7-asph-lens/

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Yuri Stangrit
http://natalispalette.jimdo.com/new-and-old-camera-lenses-by-yuri-stangrit/