Component for: SLR Telephoto lens White Lens structure (elements/groups): 20/15 Maximum aperture number: 32 Closest focusing distance: 1.2 m Auto focus Manual focus Compact, manoeuvrable and lightweight, the worlds first 4-stop Image Stabilizer lens also features the very finest in L-series lens optics to deliver stand out optical performance and operability.Features- L-series optics.- Light and compact.- 4-stop Image Stabilizer.- f/4 through zoom range.- Fluorite and UD lens elements.- Fast auto focus.- Environmental seals.- Super Spectra coatings.- Circular aperture for pleasing background blur.- Soft case and lens hood.The professionals lightweight IS telephoto zoom.4-stop ISThe EF 70-200mm f/4L IS USM features the world's first 4-stop Image Stabilizer (IS). Ideal for handheld work, the exceptionally accurate and sensitive IS negates the need for a tripod in many conditions. Shutter speeds up to 4 stops slower than would be otherwise possible (e.g. 1/15 sec instead of 1/200) can b