Highlighted rows differ between the two models.
| Specification | Canon RF 24mm f/1.8 Macro IS STM | Canon RF 85mm f/2 Macro IS STM |
|---|---|---|
| Mount | ||
| Mount | canon-rf | canon-rf |
| Optics | ||
| Focal (difference) | 24 mm | 85 mm |
| Aperture (difference) | f/1.8 | f/2.0 |
| Prime | Yes | Yes |
| Stabilization | Yes | Yes |
| Build | ||
| Weight (g) (difference) | 270,000 g | — |
Pick Model A if you need a brighter f/1.8 aperture for low-light shooting or shallower depth of field, and prefer the wider 24mm focal length for environmental or close-up macro work. Choose Model B if you prioritize a longer 85mm reach for greater working distance from your subject, or if the slightly lighter weight (despite the spec error) and f/2 aperture meet your needs. Both share the same price, so the decision hinges on focal length and aperture preferences.