Top features: - Ultrasonic focusing and silent manual adjustments - Large f/2.8 aperture for great lighting - Flagship L-series has a high-quality build Ultrasonic focusing Combining rear focusing technology with two ultra-low dispersion elements, the EF 200mm delivers sharp images with smooth and natural background blur. For fast, accurate and almost completely silent focusing, the EF 200mm has an ultrasonic motor to ensure your focus point is accurately reached. But if you want to adjust the subject ever so slightly, the manual override lets you make changes without leaving AF mode. Large f/2.8 aperture Shoot in low light conditions without sacrificing on quality with the large f/2.8 aperture, which also provides fast and detailed control over the depth of field. Flagship L-series has a high-quality build Designed to prevent dust and moisture entering and damaging the lens, the Canon EF 200mm is part of the flagship L-series, which combines a durable and reliable build with outstanding image quality. For accurate colour balance and contrast, Super Spectra coatings on the lenses suppresses flare and ghosting by absorbing any excess light that might be reflected by the sensor.