OpticalZoom, whose English name is Optical Zoom, relies on the structure of optical lens to zoom, that is, the shot scene is enlarged and reduced by the movement of the lens. The larger the optical zoom coefficient, the farther the scene is photographed.
Canon IXUS 190 has an optical zoom of 10 times, which can easily bring distant scenes closer to the front, taking into account both long-term and close-up views.