Canon 2818A004 0.26x Lens Converter
This optional accessory is designed to work strictly with the EF 50mm f/2.5 Compact Macro lens. Unlike typical life-size adapters, the Life Size Converter EF actually has optics that is optimized for ...
Pros: Great way to get into "true" macro photography, one affordable step at a time.
Cons: 1 f-stop loss. The EF 50mm Compact Macro goes from f/2.5 to f/3.5. (minor gripe)