Image stabilization
Videos
Image stabilization (IS) is a family of techniques that reduce blurring associated with the motion of a camera or other imaging device during exposure.
Photography of a sound reinforcement system prior to a pop concert, wherein the room was nearly dark except for the blue spotlight and the dim white light from the device rear panel itself. Though the exposure time of 1⁄4 s at (35 mm equivalent) 180 mm focal length would typically result in a relatively strong blur according to the "1/mm rule", the image is quite sharp – which is the result of the activated image stabilizer of the employed Lumix digital camera.
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.
A moving TV camera that is remote controlled and gyro-stabilized through a Newton head on rail dolly system.
Canon EF lens mount
Videos
The EF lens mount is the standard lens mount on the Canon EOS family of SLR film and digital cameras. EF stands for "Electro-Focus": automatic focusing on EF lenses is handled by a dedicated electric motor built into the lens. Mechanically, it is a bayonet-style mount, and all communication between camera and lens takes place through electrical contacts; there are no mechanical levers or plungers. The mount was first introduced in 1987.
The electronic contacts (gold-plated) of an EF mount lens.
The EF mount of a Canon EOS 50
Electronics of an EF-S lens
An EF lens showing its different controls and features