Sony A9 is a great mirrorless camera targeted at wedding, action and sports photographers. Dan Watson recently tested the Sony A9 with Canon 400mm f/2.8 & 300mm f/2.8 IS lenses (using the Sigma MC-11 and Metabones Mark IV). If you are a sports photographer or wildlife photographer looking at the Sony A9, you can check out the video from Dan Watson to find out how Sony A9 works with non-native lenses. Great review!
Reminder: The Sony A9 full frame E mount mirrorless camera earned an impressive 89% overall score and Gold Award from the experts at DPReview and it is ideal for sports, peak action, wedding, event and child photography, photojournalism.