Overview

The Canon RF 135mm f/1.8 L IS USM is exceptionally sharp, with one reviewer calling it 'ridiculously sharp'. It offers fast, reliable autofocus—'the fastest AF I've ever used on a lens'—and pleasing bokeh, colors, and contrast. Build quality is solid, with screws replacing glue on the shroud ring. A potential weakness is its extreme sharpness, which some may find excessive. This lens suits portrait and event photographers who prioritize subject separation, low-light performance, and fast AF over zoom flexibility.