Review: Panasonic 12-60mm f2.8-4 Power OIS (Micro Four Thirds)

When the Panasonic 12-60mm f2.8-4 Power OIS was announced with a number of other variable aperture lenses out there, I was very confused. Why would Panasonic make a lineup of lenses with a variable aperture and target them at professional photographers? Many want constant aperture lenses. Granted, these are a bit longer than most professional zoom lenses and as I saw over a while, the performance is also really up there. The Panasonic 12-60mm f2.8-4 Power OIS is weather sealed, sharp, fast to fo...