The Olympus 300mm f/4 PRO is a hard lens to get enough of. We reviewed it, shot extensively with it on the Olympus E-M1, and then awarded it Best Telephoto Prime Lens in our 2016 COTY awards. But as all of that was transpiring, Olympus was busy rolling out the E-M1 Mark II, which really upped the ante in terms of what the 300mm f/4 PRO could offer photographers. As such I couldn't resist the temptation to acquire them both from our lab and give this pair an extended gallery selection of its own. After all, the E-M1 Mark II...
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