page_title: Image stabilization
section_title: Dual
hierarchical_section_title: Image stabilization / Techniques / Optical image stabilization / Dual
caption_attribution_description: Deutsch: Historischer Universaltheodolit vom Hersteller Pistor &amp; Martins in Berlin (1851), Exponat der Ausstellung 2017 vom GeoForschungsZentrum Potsdam. Freihändige Aufnahme mit Polfilter.English: Historic universal theodolite Pistor &amp; Martins manufactured in Berlin (1851), exposed 2017 at an exposition of GeoForschungsZentrum Potsdam. Taken free-hand with polarising filter.
context_page_description: Image stabilization is a family of techniques that reduce blurring associated with the motion of a camera or other imaging device during exposure.
  Generally, it compensates for pan and tilt of the imaging device, though electronic image stabilization can also compensate for rotation. It is used in image-stabilized binoculars, still and video cameras, astronomical telescopes, and also smartphones, mainly the high-end. With still cameras, camera shake is a particular problem at slow shutter speeds or with long focal length lenses. With video cameras, camera shake causes visible frame-to-frame jitter in the recorded video. In astronomy, the problem of lens-shake is amplified by variation in the atmosphere, which changes the apparent positions of objects over time.
context_section_description: Starting with the Panasonic Lumix DMC-GX8, announced in July 2015, and subsequently in the Panasonic Lumix DC-GH5, Panasonic, who formerly only equipped lens-based stabilization in its interchangeable lens camera system (of the Micro Four Thirds standard), introduced sensor-shift stabilization that works in concert with the existing lens-based system ("Dual IS").
  In the meantime (2016), Olympus is also offering two lenses with image stabilization that can be synchronized with the in-built image stabilization system of the image sensors of Olympus' Micro Four Thirds cameras ("Sync IS"). With this technology a gain of 6.5 f-stops can be achieved without blurred images. This is limited by the rotational movement of the surface of the Earth, that fools the accelerometers of the camera. Therefore, depending on the angle of view, the maximum exposure time should not exceed ​¹⁄₃ second for long telephoto shots (with a 35 mm equivalent focal length of 800 millimeters) and a little more than ten seconds for wide angle shots (with a 35 mm equivalent focal length of 24 millimeters), if the movement of the Earth is not taken into consideration by the image stabilization process.
  In 2015, the Sony E camera system also allowed combining image stabilization systems of lenses and camera bodies, but without synchronizing the same degrees of freedom. In this case, only the independent compensation degrees of the in-built image sensor stabilization are activated to support lens stabilisation.
caption: Free-hand museum shot of a historic universal theodolite taken without flash light but with dual image stabilization. The image was taken with a Panasonic Lumix DMC-GX8 and a Nocticron with almost two times the normal focal length of the camera system (42.5 mm) at f/1.2 and with a polarizing filter in order to remove reflections from the transparent glass of the display case. ISO speed = 800, exposure time = ​1⁄8 s, exposure value = 0.5.
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