After 1 month putting the OM System M.Zuiko Digital ED 150-600mm F5.0-6.3 IS lens through it's paces, I go through my opinions on this lens from the point of view of a full time wildlife photographer and user of Olympus/OM System gear for the last 3 years. I've not been paid by OM nor have they asked for anything specific to be said in a review - these are my full & honest thoughts on this lens. Please let me know if you have any questions and I'd be more than happy to answer.