Canon 100-500 vs Sigma 60-600
My personal experience with these two lenses and the one I prefer.
On a recent brown bear photography adventure to Alaska, I was blessed with the opportunity to take both a Canon 100-500 L and a Sigma 60-600 Lens. I have been using the the Sigma 60-600 with a Canon mount as my main lens for several years. I have one of the first 60-600 lenses and received it just shortly after its original release from Sigma. My first experience with this lens was a wildlife safari in Ethiopia. Prior to that, I was using the Sigma 150-600 sport, a Canon 600 prime and a Canon 300 prime. I am a professional photographer and have close to a million actions on my Sigma 60-600 lens. I have recently purchased the Canon R3 and have been using the Sigma 60-600 with the Canon Mirrorless adapter as my main lens. Having been impressed with the size and weight of the Canon 100-500, I decided to give it a try and see how it stands up to my Sigma 60-600. Both lenses are very impressive and I highly recommend both of them. However I did find that one of the lenses had a defining edge for my photographic use.