An image stabilizer is used to get sharp photos at slow shutter speeds which would normally be spoiled by camera shake. The minimum ‘safe’ shutter speed depends on the conditions and the lens you’re using, but an image stabilizer can let you use shutter speeds up to five stops slower – or more. Image stabilizers […]
This is where camera movement is counteracted digitally. It's not very effective for stills photography, where it's sometimes called 'electronic stabilization', but it can be very useful in video, where it can smooth out or remove camera movement between frames.