What do you mean by positive film and negative film when shooting?

Due to the different production processes of latex coating on photosensitive film and the different methods of development and development, the image effect is also different.

A negative is an image obtained after exposure and development. Its brightness is opposite to that of the main body, and its color is the complementary color of the main body. It needs to be printed on a photo to be restored to a positive film. Negative film, whether black and white or color, is the most commonly used film for photography.

Positive film is a general term for photosensitive film used to print photos, slides and film copies. It can print the negative film on the negative film into a positive film, so that the brightness or color of the image is the same as that of the subject. The sensitivity of black-and-white positive film is limited to purple-blue light, and the sensitivity of color positive film is weaker than that of color negative film, so positive film is rarely used in photography.

Reverse film is a kind of photosensitive film which can directly obtain positive image after reverse development. Black-and-white reversal film can directly obtain the transparent film of the dark image consistent with the main body; The color reversal film can directly obtain the transparent film with the same color as the subject, and the color is true and bright, but the tolerance is small. Reverse film is widely used in printing plate making or making slides because of its high-quality positive effect. Professional photographers mostly use color reversal films when taking advertising photos. Black film and color film, whether negative or reverse film, are divided into black and white film and color film.

Ordinary negatives are suitable for shooting landscapes and portraits, but the color of one negative can express people's skin color more comfortably, but this subtle difference is not obvious on the negative, because the negative is greatly influenced by post-printing, and it is not well developed and controlled. A good negative is no different from ordinary ones! On the positive film, it is obvious that different kinds of positive films have different effects.

The positive film is the reverse of the negative film. You can see the real color directly on the negative film and project it with a slide projector, so it is also called a slide! Positive films are more delicate and have better amplification effect, so they are often used in advertising photography.