What are the primary colors of apples when they are photographed?

This can be debugged: it should be adjusted before taking pictures, and the photos should change color temporarily.

An additional lens installed in front of the camera lens is used to filter natural light, that is, three primary colors;

1, UV (ultraviolet) mirror: This kind of mirror can basically eliminate the influence of ultraviolet and stray light on film sensitivity and protect the lens. Photography is more needed in plateau areas.

2. Sky mirror: absorbs ultraviolet rays and is applicable all day. Outdoor photography can reduce the blue shadow caused by scattered light in the sun and keep the natural color. At the same time, it protects the lens.

3. Red Mirror (R): absorbs blue light, which can produce romantic sky effect or similar effect of shooting on a moonlit night during the day, and has the function of absorbing ultraviolet rays. When shooting, it is generally necessary to add three levels of exposure, which can be mastered flexibly according to shooting requirements and filter depth. This kind of mirror is generally used for black-and-white photos and can also be used for color photography.

IPhone is a series of smart phones developed by Apple in the United States, which is equipped with the iOS operating system developed by Apple. In 2007, at the annual meeting of Apple's global software developers held at the Masconi Convention and Exhibition Center in San Francisco, Jobs revealed the launch of the first generation iPhone.