I have an Oly E-620 with a 70-300 lens. In an Oly, that's a 140-600 equivalent.
I have the same body and lens and have been very happy with this setup. I agree 400mm can really do a lot even when hand held.
Larry *********** "Speed is fine but accuracy is final" - Bill Jordan "We do not exaggerate when we state positively that the remodelled Springfield is the best and most suitable "all 'round" rifle".......Seymour Griffin, GRIFFIN & HOWE, Inc.