This lens will be fine for the longer range work you would use it for. As I've mentioned previously though, atmospheric conditions may be an issue for you when using long focal length lenses. Refer to your previous posts. I use a 50-500 as you know and it's a great piece of kit for what it is. The 150-500 is similar, but a littler sharper at the longer end and has OS
. The only problem with it is, it's 150mm at the shorter end so it's not a lens you can use for closer work.
Equipment: 2x Canon EOS 50D; Sigma 10-20 EX DC HSM, 50-500 EX APO DG, Canon 24-105 f/4 L, Speedlite 430EX