"ZEISS Loxia 2.4/85 - The inconspicuous observer Despite its compactness the handy ZEISS Loxia 2.4/85, a moderate telephoto lens offers outstanding image performance - across the entire image field of a full-frame sensor. Be it for a portrait or a street or landscape shot, this inconspicuous lens is great for helping you master these photographic disciplines. ZEISS Loxia lenses were specifically designed for Sony a7 cameras. This means that they can make the most of the mirrorless, full frame system, while giving you all the creative possibilities of 'classic' photography with manual focus at the same time. And that's not all: ZEISS Loxia lenses also provide everything you need to shoot high quality video, such as the unique DeClick feature for smooth adjustment of the aperture, for example. Design A lens design with relatively few glass-to-air surfaces, invented by Dr. Ludwig Bertele at ZEISS in 1930 to provide the fastest lenses of that day for 35 mm photography offering speeds up to f/1.5 and well controlled veiling glare. This is where the name comes from, containig the German word for sun, 'Sonne', the symbol of utmost brightness. DeClick feature One completely new feature of the Loxia lens is that you can 'declick' the aperture's locking mechanism using a tool (supplied) and an adjustment screw on the bayonet surface. This means that for video applications, you can smoothly eliminate any unwan|Minimum focusing distance: 2.62' (0.8m)|Lens construction: 7 group seven (Sonnar)|Angle of rotation of the focus ring: 220 degree|Filter Size: 52mm|DeClick function"