I am thinking about getting the OM-D to use for a long tele option. I want to have a final focal length of at least 400mm (35mm equivalent to 600mm). 500mm would be even better. I assume that there is no need for an image stabilized lens since the body has image stabilization.
Advice appreciated regarding options including m3/4 lenses or 3/4 lenses with appropriate adapter. Are teleconverter options also available?
Thus far my knowledge of the m3/4 and 3/4 ecosystems is limited.
I might also go with a Canon APC system of which I do have better knowledge.