My first thought tool..lol
Generally the Oly lenses are more evenly sharp across the frame and vignette wide open less than the Panasonic lenses, but often the Panasonic lenses have a slightly higher peak sharpness. And yes the O75 is simply in its own league. The PL25 appears to have a slightly higher peak sharpness but is less even across the frame than the O25. It really comes down to what you want. Or just buy the O75 and shoot at f5.6 to get stunning sharpness across the frame. Like all broad generalizations you can poke holes in it, but basically both of these lenses are excellent. It depends on how you like the rendering especially wide open, and is the size of the PL25 a constraint (especially the stupid hood)? Once stopped down I suspect you will be hard pressed to see the difference.I am in touch with seller of the 25/1.4 at a better price than a new Oly 25/1.8. I use a GF-1, do you think I should get it?