This is probably because I came from 35mm Rangefinders, but I just couldn't get into zooms. Got the kit zoom with my camera because it was almost free, plus the 40-150 for the reach. They're sharp enough, and focus quickly enough, but then I bought a 14mm Panny, then a 30mm Sigma. Since then I just don't want to use the zooms at all. I'll keep 'em I guess, not worth too much for resale, but now I guess I know where I'm at and what I want. Maybe a 45 Oly or 60 Sigma and I'm done. I'm still getting great images, though. P.