Well, in the corners, they could be better. Nevertheless, for 450 euros, it’s a decent offer – considerably better IQ at 24mm would only be available at three times the price and much bigger a package (talking about m43 offers – some small body with the Oly 12/2).
I only wish it had GPS built-in. I hate having to spend sometimes hours on synchronizing my GPS tracks recorded with external GPS trackers to my photos after multi-day excursions / travels. (This is why, BTW, I tend to use the Nokia 808 for outdoor travel shooting. No need to struggle with GPS synching as it properly tags my images. And, of course, it provides GREAT IQ.)
Started out doing photography at the age of 6 using an uncle's old 1940 kodak brownie box camera. At 15 years of age, I decided to buy my very own 1975 Praktica SLR camera. I now shoot with a Nikon D850. I do unpaid TFP and commercial paid work.