Hello, It was my first time practically using PanaLeica 100-400mm by renting only for 3 days. First few hours were understanding and adjusting the lens. After figuring out, I can say that the CAF worked great even though sometimes it failed to track. It’s probably user error. The lens with the body(em1.2) was good enough. Some wider angle shots are with Oly 12-100mm. Pictures are processed with Lightroom and some are cropped. Thank you!