Is the first 70-200 of the fifth generation of Sigma Black OK?

Not bad, it's a little fleshy, the volume is the shortest of its kind, and it's easy to bring some. My previous four generations and my friends' five generations were all under f4. Jiao Wai is a bit ugly (personal opinion)

If you don't look at Jiao Wai and color and defocus (color can be post-processed), Sigma series is a good lens with high sharpness, and this one is no exception.

But I still recommend the original factory. If this kind of lens is unprofessional, I bought it, used it occasionally, and then lay down. It is worthless after disposal. The color and Jiao Wai are much worse than N/C/S C/S, and since 2.8 is not very easy to use, it is better to buy F4 version from N/C company, which is compact and easy to carry. In addition, 70-200 art patents have also come out. Take the money and wait and see.