The light ratio is the ratio of the amount of light in the darkest part of the subject to the amount of light in the
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Discuss photographic art theory and related topics from a practical perspective.

What is the history of the development of the camera? Loose leaf film camera, also known as landline, vertical camera, and large format camera. The

The history of SLR camera and its working principle. The so-called rangefinder camera is a camera in which the viewfinder and the optical axis of

Performance and characteristics of the camera filter.In fact, the performance of different filters is also different. For example, the basic function of color temperature conversion

Classification of camera filters.Lens filters are also called color filters, or filters for short. Using filters is an important part of photography. Filters have two

What is photography? When was photography born?Photography is the art of recording scene images with cameras and photosensitive materials. In short, photography is the use

What is lens distortion? How can it be minimized?The so-called aberration is the distortion phenomenon of the lens, that is, the error between the image

What are the factors that determine lens quality? How to choose a lens?The lens quality referred to here mainly refers to the imaging quality of

How to use the aperture correctly in photography?Aperture, also known as aperture diaphragm, is used to change the aperture size to control the luminous flux

Is a prime lens better or a zoom lens better?The so-called fixed focus lens is a lens with a fixed focal length. Fixed focus lenses