Together with the GF1 I also bought the Panasonic 20. This objective fits in my Fotografiergewohnheit, namely back to the roots, but with excellent quality. Having stayed the I 50 / 1.2 made my favorite lens on my 5D, I wanted something for my Alternatively camera GF1 (just not at exorbitant prices). What is clear is that 20 not a bargain, but just barely under. The quality is in the acceptable range (better than the 14-45er). The camera is with me, especially when traveling and outdoor activities in use (because so beautiful small) After the tests now my personal opinion:
Pro: - Super slim and fit easily (a feast for the eyes along with the Body) - The image quality along with the GF1 perfectly fine (for the intended purpose) - Class opening (1.7) - For me very pleasant focal length (about 40 in KB) - Acceptable quality - Beautiful iris shape with 7 slats - Metal bayonet
Contraindications: - No results
Conclusion: From my side an absolute recommendation. I hope more bright fixed focal lengths.