No, really I'm interested (especially what shutter speeds can be handheld at 300mm). My experience with a (borrowed) 420mm f/5.6 Lens on a FF DSLR is, that I with a very old impelementation of Canon Optical IS I can handhold shutter speeds of 1/160 and if I am prepared for at least some blurred shots maybe 1/125. This translates to around ISO 500 on a sunny day (with the subject sitting in a tree) or up to ISO 3200 on an overcast day.

I do not have many years experience shooting with lenses that long so maybe I am off here. But based on that little experience I have, I think I would not have had one good shot so far with this new lens. Its a pity because I am currently shopping for a lens in that range. The m.Zuiko 75-300 has not convinced me, so far.