20mm · f/2
The Mitakon 20mm f/2 4.5x Super Macro is a fully manual, all-metal lens designed for extreme close-up work, offering 4x–4.5x magnification. Optical strengths include best sharpness at f/5.6–f/8, but it is not extremely sharp overall. Weaknesses include very narrow depth of field, no infinity focus, and difficulty with moving subjects. Build is solid and lightweight (230g), but handling requires a tripod and focusing rail due to sensitive focus. It suits dedicated macro photographers who need extreme magnification and can work with manual controls and static subjects.