How about a red circle for sports photography?

It has nothing to do with macro, but the key points are: in order to focus accurately, the macro lens has a long focusing stroke and a slow focusing speed, and the red circle focuses slightly faster than the non-red circle, but it is still slow; So, if you want to shoot sports, you'd better use a serious telephoto lens, such as Guo Xuwei of IS. If Xiao Bai is heavy, it is not conducive to holding hands. The lens is large and the focusing speed is slower than that of Guo Xuwei. However, if you shoot sports, you'd better put it on the shelves. If conditions are good, you can have a shelf without anti-shake.