Olympus Zuiko Digital 300mm f/2.8

Amazingly sharp, very high contrast (improves slightly by f3.5), will stand the EC-14 without degradation, and the EC-20 with minimal degradation wide open - better than the competition from Nikon or Canon. AF is fast, despite not being a SWD lens. Ideal for sports, longer range portrait/fashion and wildlife. Superbly made, but heavy. Lack of IS is irrelevant, as all of the 4/3 bodies you would match this to have body IS - giving 5 stops advantage, better than the in-lens systems. Pricey, but worth every penny. Greater depth of field with 4/3 is advantageous for wildlife as it can be used wide open with sufficient depth of field to get a good proportion of the animal in - full-frame users usually have to stop down. Best telephoto I have ever used.

Sample shots here: http://picasaweb.google.co.uk/elliott.aje.andy/RaptorFoundation29September2009ZD300Tests#

Sharpness, Contrast, fantastic performance with teleconverters

Heavy

Zuiko 350mm f2.8
Nikkor 300mm f2.8
Zuiko 50-200mm f2.8-3.5

Not Needed