SUMMARY
The Canon EF 50mm f/2.5 Compact Macro, a lens from 1987, remains compatible with modern Canon R-series mirrorless bodies, supporting features like in-body stabilization. While physically small and offering only half life-size magnification without an additional converter, its metal and plastic build is robust. Testing reveals strong center sharpness by f/5.6, though corners are soft wide open and autofocus is slow and noisy, potentially disturbing macro subjects.
TAKEAWAYS
The 40-year-old Canon EF 50mm f/2.5 Compact Macro lens adapts cleanly to modern Canon R-series cameras.
It offers good center sharpness at f/5.6, but exhibits soft corners and noticeable purple fringing when shot wide open.
Autofocus is slow and loud, making it potentially unsuitable for wildlife or insect macro photography.
The lens's build quality is a highlight, featuring metal and plastic construction with a metal mount.