Canon RF 85mm f/1.2L USM

Widely regarded as one of the sharpest 85mm lenses ever made — the benchmark portrait prime for the RF system, with creamy f/1.2 bokeh and dust/drip-resistant L-series build. Heavy and expensive at nearly 1.2kg, it's a professional investment piece favoured by wedding and portrait photographers over a lighter walkaround lens, and it isn't compatible with Canon's RF extenders.