My new lens
Last month I bought a used lens in Canada: SONY 500mm F8 Reflex. After test shot, the performance of this lens is acceptable in a good light. The sharpness can be achieved reduced to 60%. By the way, my camera is a SONY a700.
There is a feature of this lens: the highlight will become a ring if unfocus.
Photo credits: Jinfeng Zhang.
How to shoot events