Give everyone a general idea about the difference between Quan Huafu and Yumin.

Quan Huafu and afterimage are mainly distinguished from the lens magnification, the receiving area of the photoreceptor and the focal length of the lens.

First, the lens magnification

Quan Huafu: It means that the sensor size of the camera is equivalent to 135 film size of 36*24mm, which is determined by Kodak. The popularity of Leica cameras has made it an industry standard, and it has been used ever since. A camera with this size sensor is called a full-frame camera, and its image quality is better than the afterimage.

Residual frame: refers to APS-C frame. This standard was originally born in the film era, and its original intention was advanced photo system. 1996, Kodak, Fuji, Canon, Minolta and Nikon introduced a new generation of photo systems which are different from the 35mm film system, and the picture quality is lower than that of Quan Huafu.

Second, the receiving area of the photoreceptor.

Quan Huafu: The photoreceptor has a large receiving area, which naturally receives more signals, and is superior to the small bottom in details. When shooting the same scene in the same lens and location, it is wider than the sub-frame, with high tolerance and large viewing angle.

After-image: The frame is smaller than that of Quan Huafu, but it has technical and cost advantages in sensor manufacturing. Regardless of the problem of blurred background, the afterimage is the area that intercepts the center of the full-size image, with high tolerance and much smaller viewing angle.

Third, the focal length of the lens

Quan Huafu: The lens is mounted on a camera with a certain frame, and the angle of view it brings is equivalent to a lens with a certain focal length on a full-frame camera. The larger the focal length of Quan Huafu lens, the larger the viewing angle and the higher the focusing speed.

After-image: The after-image lens has a small focal length and a small viewing angle, and the focusing speed is lower than that of the hologram.