Thanks for the advice on the other thread My 25mm Panasonic arrived today, just finished initial testing. In the nick of time, the 12-50mm was frankly disappointing (nice colours, detail lacking), although unfair I know as I am comparing it to Leica primes, and I held off evaluating my new camera. I don't want to diss the 12-50 completely, its not bad for a quickie: With the Panasonic 25mm f1.4, My findings are: f1.4 sharp f2 tack in the centre and good on the corners progression better through f2.8, f4 and f5.6 (becoming virtually unnoticeable with each jump). As expected (in line with other cameras I have tried, both with in-body and in-lens shake compensation), slightly sharper with IBIS turned off. Don't ask me to explain this, buts it due to some compensation by the shake reduction even if you are completely steady. Summary, this lens is good at f1.4, but simply spectacular above this. You can certainly see the Leica signature on the colours and micro contrast. The Oly (Sony) sensor shines through and gives perfect pixel level detail. So now I am convinced, only the best prime lenses for me. Might try the Panny 12-35mm f2.8 and 35-100mm for fun though, as I have heard good things. I only need one long telephoto, so its either the Oly 75mm f1.8 or the Panny 35-100mm Here are some cropped samples at the pixel level (slightly different light, some default adobe lightroom settings, not ideal but you get the idea): Focus on curl in the centre, slightly to the left: @ f1.4: @ f2 I just think getting this type of clarity out of a non-FF camera AT THE PIXEL LEVEL is just outstanding.