All-Round Zoom The RF100-400mm f/5.6-8 IS USM has a large focal coverage from 100mm to 400mm. Compatible with both Extender RF 1.4x and Extender RF 2x, the effective range can be increased to 560mm and 800mm respectively. 0.41x Magnification Through the RF mount design, the RF100-400mm f/5.6-8 IS USM has a short minimum focusing distance allowing it to achieve 0.41x magnification. Image Stabilisation Natively, the RF100-400mm f/5.6-8 IS USM can achieve up to 5.5 stops image stabilisation. When paired with a compatible camera, the 5-axis In-Body Image Stabilizer (In-Body IS) and the In-Lens Optical Image Stabilizer (Optical IS) provide Coordinated Control Image Stabilisation (IS) capable of up to 6 stops of image stabilisation. Nano USM This compact ultrasonic motor provides high-speed AF. The innovative AF actuator is suitable for high-precision micro-driving and delivers high performance even during movie recording and live-view shooting. Lens Layout The introduction of the RF mount has enabled the RF100-400mm f/5.6-8 IS USM to deliver high image quality in a lightweight and compact design. UD Lens This lens uses a single Ultra Low Dispersion (UD) lens element with low refraction and low dispersion that reduces chromatic aberrations to deliver higher image quality.