sorry, cannot enter Chinese on HP Touchpad. I have Canon 50mm F1.8 through adapter. If setting to F1.8, the DoF is very narrow. I think less than 10cm total. Effectively if I focus on eyes, ears are out of focus. So I think for full body shot, you will likely use F8 or higher to make everything in focus. Then 1650 is good enough. xiaoxiaoren (可爱小宝宝) 的大作中提到: 】