Canon EF 50mm f/2.5 Compact Macro review
A superior-performance lens offering excellent optics and focusing from
infinity down to one-half life size (0.5x). Its nine-element design
features a floating optical system, which ensures top-notch performance
even at close focusing distances. Light and compact, it functions
beautifully as a general-purpose normal lens. The optional accessory Life
Size Converter EF enables focusing down to life size (1:1), and actually
increases working distance - very desireable in close-up shooting.