i bought this as a range aid for using iron sights but i discovered it is perfect for watching auto racing. i took these with me as well as my 18-300mm f3.5 nikkor zoom dslr for the Rolex24 2016 race this weekend to the newly finished Daytona International Speedway, on the 4th floor of the grandstands on turn 1. this was an incredible race, especially the last 2 hours. this binocular, compared to my 18-300mm zoom had probably x3 the optical zoom power of my dslr. these binoculars allow you to see all the way back in on the rear straight away. if you watch nascar, this is the perfect lens on race day from the grandstands.