I use the lens adapter to an Olympus OM-D E-M1. The lens forms at all distances from very sharp and contrasty and can with its focal length of 70 mm (KB) are also very good used as a portrait lens. Since the lens is located very deep in the lens is unnecessary lens hood. With a diameter of 70 mm and a length of 75 mm when the tube is extended, the lens has a length of 92 mm, which is not exactly petite. The front lens rotates not - but the lens extends. The AF is at ordinary light acceptable, otherwise it takes a long time and goes back and forth until it has the focus point found. The AF hums Auserd audibly. It is best to choose at Macro shooting in manual focus the desired scale is printed on the tube (1: 4/1: 2/1: 1.5 / 1: 1) and examined the focus by moving the camera, then take the fine adjustment over before the magnified display or the viewfinder. If necessary, is also a camera sled helpful. The somewhat weak brightness of f 3.5 does not bother, because you eh dims to obtain a corresponding depth of focus at close range. The distance at 1: 1 recordings amounts to only 35 mm. Tip: Set the camera-side flash to lowest flash output (possibly even higher place a tempo or a blackened analog film stick (which can hardly light through but the infrared light components pass through and reach for the ignition of a sideways-held or mounted on the camera second flash this second. Lightning can be very small (eg Metz 28 CS-2). With this inexpensive combination (Macro Olympus 35 mm + Adapter Ring + small flash) succeed beautiful sharp and high-contrast shooting handheld.
