Video conference camera Optical VS digital zoom difference

Video conference camera Optical VS digital zoom difference

In today's digital video cameras, digital zoom has become one of the essential features of the camera;

Digital zoom is a change in the vertical direction of the light-sensing device. When an image captured by a CCD or CMOS chip enlarges or shrinks the center of the image through an internal program, the complex matrix acquires neighboring pixels, and the image is enlarged using a similar cell regeneration method (or Interpolation), resulting in a digital zoom. The greater the degree of interpolation, the greater the digital zoom. And give people a zoom effect. The smaller the area on the light-sensing device, the more visually it will allow the user to see only part of the scene. However, since the focal length does not change, the image quality is relatively poor relative to normal conditions.

Summary: With digital zoom, the scene is zoomed in, but its sharpness is reduced to a certain degree.

Optical zoom can support the imaging of the main body, adding more pixels, so that the subject is not only bigger, but also relatively clear. The larger zoom factor is more suitable for telephoto shooting. The optical zoom is the same as the traditional camera design, depending on the focal length of the lens, so the resolution and image quality will not change.

Optical zoom is produced by changing the position of the lens, object, and focus. When the imaging plane moves in the horizontal direction, the angle of view and focal length will change, and the farther scene will become clearer, making people feel like objects are moving forward.

Summary: With optical zoom, the subject is zoomed in, but its clarity does not lose image quality.