Canon's new mid-range RF zoom with constant f/2.8 and IS at a non-L price point.
The Canon RF 28-70mm f/2.8 IS STM is Canon's non-L constant f/2.8 standard zoom for the RF system, launched in 2024. It fills a gap between the slow-aperture kit zooms and the expensive RF 24-70mm f/2.8L IS USM, offering professional-class aperture at a consumer price.
Optical quality is good with sharp centre performance and reasonable corners. The constant f/2.8 provides consistent exposure and depth of field across the range. IS provides approximately 5.5 stops. STM motor is quiet for video. Build is plastic without weather sealing, positioned clearly below the L-series.
Canon RF mount only, 67mm filter thread. The 28mm starting point is narrower than the L version's 24mm. The Tamron 28-75mm f/2.8 Di III VXD G2 for RF-mount is a third-party competitor. The RF 24-70mm f/2.8L IS USM remains the professional choice.
New on used market. Check IS operation and STM motor. The non-L build is a clear cost compromise but the f/2.8 constant aperture delivers the key advantage. Good value for hybrid shooters who need f/2.8 without the L-series price premium.