The technical details behind this lens This compact and lightweight super-telephoto lens is custom designed specifically for EOS R Mirrorless system cameras. Super-telephoto shooting is now even more accessible. The RF 600mm f/11 IS STM has been designed to make super-telephoto shooting more accessible and affordable for the EOS R System Cameras. Delivering high image quality in a compact design, it provides the ability to photograph closer to subjects such as wildlife and sport with photogenic image expression from distance. Fast response to movement with high-speed Auto Focus High-speed, high-precision focus drive can be achieved so that fast-moving subjects can be captured without missing the desired moment. The use of a Stepping Motor (STM) achieves quiet and smooth AF during movie shooting. Lens control ring for fast intuitive shooting Equipped with a control ring unique to the RF lenses offering customisable control over shutter speed, ISO or exposure compensation. New design The leather grain finish of the lens barrel enables easy use and prevents slippage, fingerprint smudges, and scratches. Top three Reasons we think you will love this lens Affordability for such a massive zoom Definitely worth pairing with the R5 and R6 Incredible Canon quality and quiet operation ideal for wildlife Our experts opinion Wildlife and objects at a distance are always tricky subjects to capture. This lens offers a terrific option for the full frame mirrorless user to capture exceptionally vivid imagery and is purpose built to deliver remarkable results in the field.