Inhouse product
Canon RF 400 mm f/2.8 L IS USM
Mount: Canon RF (Full-Frame)Focal length: 400 mm fixedMax aperture: f/2.8Stabilizer: IS (5.5-stop, 3 modes)Extender compatible: 1.4× & 2× RF extendersFilter drop-in: 52 mm rearSize / weight: 163 × 367 mm / 2.9 kg[^1^]