OM System vs Nikon Full-Frame: Scott Keys Puts the $7,500 M.Zuiko 150-400mm PRO to the Test

Wildlife photographer Scott Keys published an in-depth comparison between the OM System OM-1 paired with the M.Zuiko 150-400mm f/4.5 PRO lens and the Nikon Z9 using a Nikkor Z 800mm f/6.3 and a 400mm f/2.8 with 2x teleconverter. The test explored sharpness, background separation, ISO performance, and real-world field usage with songbirds and butterflies. He…...