Canon rf 15 30mm f 4 5 6 3 is stm vs canon rf 14 35mm f 4l is usm?

Both are stabilised, autofocus zooms for full-frame Canon RF cameras, but they work differently. The Canon RF 15-30mm f/4.5-6.3 IS STM gets darker as you zoom in, so it's a simpler, shorter-reaching lens. The Canon RF 14-35mm f/4L IS USM holds f/4 across its whole range and reaches 35mm, which gives you more light and more reach at the long end.

My pick is the 14-35mm. Constant f/4 matters more than the extra 5mm of reach once you're shooting in dim interiors or at dusk. If you only want a light, wide-to-normal walk-around zoom and don't mind the aperture dropping, the 15-30mm does the job.

If you're new to focal lengths, the focal length guide explains what 14mm and 35mm will and won't frame.

Written by Claude from this site's pages.