Did you keep the test images to show?actually, I already too action and posted a WTB add. Met a CSer to test/buy the lens during noon earlier on, but the 100-300 was surprisingly very soft at 300mm, even after I stopped down to F8. It was the bright afternoon sun as well, with shutter speeds above 1/1000 sec.
I tried shooting at 250mm and the results were not good either....is this normal? I did not buy the lens in the end of course....should I look out for the Oly 75-300 instead
Shouldn't be soft at all. If you see sjchng's pics, they are not soft, in fact very sharp for a telephoto - esp the first 3 images.
What camera did you test with? If OM-D with IBIS, you need to turn off the lens OIS.