Panasonic 100-300 or Olympus 75-300 (m4/3) Please Help!!!

I don't think I've used "pedantic" on any of these forums before; I have seen this lack of sharpness at 300mm mentioned several times before, but don't believe there is enough difference to matter, as you've just shown in your Egret photos.

Often lack of sharpness at the longest end of long zooms is caused by camera movement, rather than any failing of the lens.

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Regards,
Peter.
http://gowerphotos.tripod.com