Black and white film for photography introduction? Or can we use colored ones?

Let's talk about the difference between black and white film and color film. The traditional photographic imaging principle is that after the light enters the fuselage, the silver salt on the film decomposes, leaving an image reflected by the object irradiated by the light, which is called exposure. Friends who have played with film know that black-and-white film shooting is more difficult than color film, because black-and-white film is insensitive to color and very sensitive to light. Different colors reflect different gray levels on black-and-white film, so you want to shoot excellent black-and-white photography and have higher control over the equipment and metering parameters (that is, the parameter combination of aperture and shutter). Let's talk about film, Kodak's cold, Fuji's warm, and Le Kai's in China. For beginners, it is recommended to choose Le Kai (I don't know if it is sold). In fact, everyone who has played film knows that film photography is piled up with money. In the future, you can use a positive film, which is expensive, a roll of 24, but it is difficult to achieve the effect with digital +PS, and the color is gorgeous and undistorted.

Finally, ISO, which is called sensitivity. The higher the value, the more sensitive it is to light. The smallest ISO I have ever used is 20, and the highest is 1600. What is the difference? Ha ha! The above ISO 1600 is a professional film, which is to shoot astronomical constellations or indoor sports. This is very complicated. I will tell you that below ISO 100, the smaller the value, the higher the requirements for the camera, the more difficult it is to shoot, and the more delicate and gorgeous the image is. ISO is between 100-800. The larger the value, the lower the requirements for the camera, the easier it is to shoot, the worse the imaging, and the greater the noise. ISO is above 1600, which is a professional membrane and not easy to use. Beginners had better use ISO200 film. Those below 30 or above 1600 that can use ISO30 are relatively expensive film cameras.

Furthermore, in fact, film cameras can convert the pixel values of digital cameras. Take Fuji ordinary color film as an example. Generally speaking, ISO200 is equal to12 million pixels. Every time ISO is doubled, its corresponding digital pixels are also doubled. If it is a positive film, plus the width of 120, it can reach hundreds of millions of digital values, so digital cameras still need to work hard, hehe!

Professional printing still needs film, because digital pixels are too rough for these professional printing!