Sigma APO 70-200mm F2.8 EX DG Macro HSM II or Guo Xuwei, which details is the best for your own use?

The prices of the two are comparable, and the difference is mainly in the following points:

1, the first aperture is twice the shutter speed. Guo Xuwei is basically a lens used in the sun, and Xiaohei is better than it. After all, the stability of telephoto lens with high security shutter is the key to film quality. Only 3-4 times IS lens will be more practical, otherwise tripod is king;

2. The weight is 1370:705 and the size is 86.5x184.4: 76x172 (this difference is not obvious for camera bags). I don't know what the landlord thinks, but I care about the portability of the lens.

3, aperture blur, aperture blur effect of 2.8 and 4 is different, but I personally think that the focus of 70-200 is the main factor affecting aperture blur, that is to say, focusing determines that the blur effect of these two lenses is the same level, and the blur difference of the maximum aperture can be ignored. Another reason is that I don't always put the aperture in the maximum gear;

4, image quality, I have used both lenses, personally feel that Guo Xuwei is slightly better but not very obvious;

5. Suggestion: If the landlord is a rigorous photographer (often using a tripod), recommend Guo Xuwei; If the landlord wants to shoot by hand in more cases, I recommend Ai Guo Xuwei; If the landlord likes the blur effect of large aperture, I recommend Sima Xiaohei.