I know this is expensive and that it's a big lens. But as I just acquired GX7 and playing with the new 20mm 1.7 mkII I just love to use it with other lenses too. I have such a wide array of lens in various focals but I miss an specialty lens such as UWA (my lenses are jupiter 3 50mm f1.4, jupiter 8 85mm f2, nikon 85mm f2 leica mount, canon RF 35mm f2, canon RF 35mm f1.8, summicron 50mm f2 tabbed leica M mount, canon RF 100 f3.5 tiny leica mount, canon RF 135mm f3.5, 24/35/50/100/135/200/300 SMC takumars, Cosmicar 75mm f1.9 C-mount, Pentax 110 18mm/24mm/50mm/70mm/20-40zoom, voigtlander color skopar 25mm f4, and some more...) All I miss is more wide than the 20mm! I never owned one UWA because I thought that the prime UWA would be too strict in FOV, and I never bonded with DSLR with UWA zooms as it's way too big and heavy for my style of shooting (amateur style). But the 7-14mm just is everything I always wanted and expected for the price (seeing from reviews). So I just bite the bullet and spent the cash! Waiting for it to arrive and I'm thrilled! (I love architecture BTW).