Look here, it's 70 suitable for portrait shooting. Like a head, the sharpness of 40 and 2 1 is much better than that of 70. If the definition is too high, it is not suitable for portrait shooting. I have used all three heads, 40 is suitable for the whole body, 70 is the whole body, and the whole body is OK, but running too far, the distortion of 2 1 is too great to control. The sharpness of the whole three heads is quite good. DA40 & gt& gtDA2 1