It was fascinating to read about someone using an EM1 and the 40-150 Pro on safari and their experiences. Photos are great too, and I recommend checking out the Flickr page. It is a somewhat thinly disguised come-on for a photo-safari business, but I have to admit that it looks like a great way to go. Notice the photographer friendly and comfortable setup of the excursions. No animals were harmed on this safari! via 43rumors.com. http://www.fotozones.com/live/index.../olympus-40-150mm-f28-pro-goes-on-safari-r172 I thought his observations of the 40-150 Pro vs the 50-200 SWD were very interesting. I have the latter.