Canadian photographer Jean Fitamant carefully tested the recent Tokina SZX SUPER TELE 400mm F8 MF lens, mounted on a Fuji Xt-3 camera, giving the equivalent of a 600mm lens in full frame size. Jean is discussing the technical specifications of such reflex lens, pointing out their PROS and CONS. In a second part, the photographer provides his best tips to use this type of manual lens with modern mirrorless cameras.