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The Canon EF 50mm f/2.5 compact macro lens is for use with full-frame and APS-C DSLRs, offering an effective focal length of 80mm on APS-C system. It consists of 9 lens elements in 8 groups, and features a floating optical system that focuses down from infinity to one-half life size (1:2), making it great for minute objects like insects or flowers. You can further improve its macro capability to life size (1:1) by adding optional Life Size Converter EF, which also increases working distance. Light and compact, it also functions beautifully as a general-purpose normal lens for standard focal length shooting.

MTF Chart

Superb Optical PerformanceThe lens features optical design of 9 elements in 8 groups, and features floating optical system that dynamically varies the gap between key lens elements based on focusing distance rather than using fixed spacing. Aberrations are effectively suppressed throughout the focusing range, assuring high image quality in all shooting situations.
Macro CapabilityCapable of focusing from infinity down to one-half life size (0.5x), this lens can uncover detail that would otherwise be impossible to detect by the naked eye.