The "Nifty Fifty" Has an 80mm Equivalent Focal Length (on APS-C Bodies @ x1.6 crop factor) 50mm Native on Full Frame Cameras | An excellent walk-around lens: Great for portraits, action, and nighttime photography | Minimum focusing distance of 1.15 ft. (0.35m) and a maximum magnification of 0.21x | Stepping motor (STM) delivers near silent, continuous Movie Servo AF for movies and smooths AF for stills | 80mm effective focal-length on APS-C cameras, 50mm on full-frame cameras