9 out of 10 points and recommendedSharpness/colour low vignetting/CA Size/weightNot f/0.85
I compared to the 25mm Pana 1.4 and 1.7, not the f0.9x beasts. Even so, lucky me to have them for 2 days! This "high standard" lens makes up in sharpness and low/distortion/CA for the tiny amount it lacks in speed. Good into the light too.reviewed November 30th, 2015 (purchased for $290)
Silent, fast and accurate focus. Image quality from wide open: superb. I was going to say "handles beautifully", but in fact, I was barely even aware of it being there, most of the time.
If you are in the market for a μ4:3 "fast standard" lens, you could not possibly regret it unless you really want f/0.9.
A price/size/performance bargain, in practical terms - it rules.
Other makers could learn a lot here - many lenses hailed as "superb" don't measure up to this.