I have this lens for my GH2. In general I'm very happy with the IQ - I like sharp images, and this will generally provide them. However it is big and very expensive - I can't help thinking that I could find something smaller and cheaper with a similar IQ. From all that I have read, the current crop of m4/3 telephoto zooms are OK, but not great - I seem to have gone through dozens of write-ups of legacy lenses but could do with some advice. Can anyone recommend an alternative, or else reassure my of the sharpness of the current m4/3s? I don't mind if it is a prime and I don't need AF, but given that the PL14-150mm has OIS, then any alternative may need to be faster to compensate. Thanks in advance, Luke.