get olympusOlympus Mons is a large shield volcano on Mars. It is over 21.9 km (13.6 mi; 72,000 ft) hh as measured by the Mars Orbiter Laser Altimeter (MOLA)Could pick up the 75mm f1.8 for considerably less and get similar sharpness to the 45mm f1.2. But the focal length mht not work for you.