One Lens. Every Story. The RF20-50mm f/4L IS USM PZ is the first full-frame RF lens with integrated Power Zoom features, providing a consistent and smooth zoom with adjustable speed for your creative expression. The versatile focal length and constant f/4 aperture provide practical usage that works well in both stills and video. The In-lens Optical Stabilizer offers up to 6 stops of image stabilisation (8 stops when paired with a compatible EOS R camera) for that handheld smooth video recording or that slow shutter still capture. The compact lightweight, dust- & drip-resistant body is great for handheld rigs and gimbals.