Canon's budget RF ultra-wide zoom with IS — constant f/2.8 from 16-28mm with stabilisation.
The Canon RF 16-28mm f/2.8 IS STM launched as a compact constant f/2.8 ultra-wide zoom for the RF system with IS stabilisation — combining wide coverage with image stabilisation unusual for ultra-wide f/2.8 zooms.
Optically good — sharp throughout with constant f/2.8. The IS provides stabilisation at ultra-wide — unusual and genuinely useful. STM motor for smooth, quiet AF suited to video. The 16-28mm range covers useful ultra-wide territory.
Canon RF mount with 67mm filter thread — accepts standard screw-on filters at 16mm. IS stabilisation. STM motor. Compact and lightweight for constant f/2.8 ultra-wide. 67mm filters — practical for landscape ND and polariser.
New to used market. The 67mm filter thread with constant f/2.8 and IS is a unique combination at this price. The RF 15-35mm f/2.8L IS offers more range. For budget RF ultra-wide shooters wanting constant f/2.8 with IS and filters.