I was looking for an affordable super zoom lens, and the Sigma 150-600mm F5-6.3 DG OS HSM Sport Version appeard to be my final choice after reading and watching lots of reviews.
So here is mine, after almost three years of use.
The reason that I wanted a new super zoom lens, is because I wasn’t happy anymore with the results I was getting with my Sigma 50-500mm F4.5-6.3 APO DG OS HSM C-AF (Article coming soon).
My choice of photo lens was as below:
– Sigma 150-600mm F5-6.3 DG OS HSM Sport version
– Sigma 120-300mm F2.8 DG OS HSM
– Tamron SP 150-600mm F5-6.3 Di VC USD
– Canon EF 100-400mm F4.5-5.6L IS II USM
Finally, I went for the longest focal range and stuck to Sigma brand, and bought the sport version of the 150-600mm.
It’s heavier (2860g), no doubt, but the lens is built like a tank and is ready for tougher conditions than the contemporary version.
Images are sharp enough to me. It’s probably not as sharp as a Canon 500mm F4 or 600mm F4, but for the price, it is quite good and acceptable for my use
I don’t use it that much when it’s raining a lot, but I’ve been caught a couple of times under heavy rains, and used it in the snow, and the lens is still working well,
The lens hood is made of metal, so it’s really strong and resistant. Be careful with the little screw that holds it to the lens, you can easily lose it, or the tiny part that makes contacts with the lens.
Thanks to the Sigma USB dock, I made some updates and ajustments to the Sigma 150-600mm F5-6.3 DG OS HSM, to match my needs.
Here are some shots taken with the Sigma 150-600mm F5-6.3 DG OS HSM Sport version.

F5.6, 1/250 sec, 309 mm, ISO3200, Canon EOS 7D Mark II

F6.3, 1/640 sec, 600 mm, ISO100, Canon EOS 7D Mark II

F6.3, 1/200 sec, 558 mm, ISO1250, Canon EOS 7D Mark II

F5.6, 1/400 sec, 309 mm, ISO3200, Canon EOS 7D Mark II
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F6.3, 1/640 sec, 470 mm, ISO1000, Canon EOS 7D Mark II
The focus is fast and handling the lens is ok, although requiring muscle for a day of freehand shooting.
Overall, I’m satisfied with this Sigma super zoom lens. It’s an “affordable” zoom lens for Wildlife photography, and Sport.
I will be now interested to have a look at the Sigma 500mm F4 DG HSM OS Sports lens, which is still expensive, but twice cheaper than the Canon one.