My surfing images were published in Popular Photography in a story about Tamron's amazing 150-600 telephoto. I love this lens! Incredible reach and an incredible value. This lens goes for around $1300 USD, whereas the Canon 600 f/4 is approximately $13,000 USD. I use this lens for all my outdoor sports and have terrific results. It is best to use a monopod or tripod when shooting images that are far away, and then turn off the vibration compensation. You can handhold this baby (and use the vibration compensation, which is excellent) but you don't want to it all day.