The larger the range of iso value, the better the night shooting effect?

the improvement of ISO has advantages and disadvantages. the higher the iso, the higher the brightness, but at the same time, it will also produce more serious particles (that is, dry spots), which will greatly reduce the quality of photos.

sensitivity, also known as ISO value, is a measure of the sensitivity of negative film to light, which is determined by sensitivity measurement and several measured values, and has recently been standardized by the international organization for standardization. For less sensitive negatives, it takes longer exposure time to achieve the same imaging as more sensitive negatives, so it is usually called slow negatives. Highly sensitive negatives are therefore called fast negatives. Whether it is digital or negative photography, in order to reduce the exposure time, the relative use of higher sensitivity usually leads to the degradation of image quality (due to thicker negative particles or higher image noise or other factors). Basically, with higher sensitivity, the quality of photos is poor.

when shooting night scenes, long exposure will make the noise in the dark spots of photos particularly obvious, so if the environment permits, tripod and lower ISO value should be used to get the best shooting effect. If the ISO setting is improved, the graininess of photos will become more serious, which requires users to master flexibly according to the situation at that time.

as we are familiar with traditional cameras, ISO sensitivity indicates the sensitivity of film to light, which is equivalent to 1, 2 and 4. The greater the sensitivity value, the more suitable it is to be used in dimly lit places, but it will lose the vividness and natural feeling of colors. Although the digital camera does not use film, it is equipped with similar functions and can change its ISO sensitivity (some models can't change the ISO sensitivity setting, please confirm it in the manual of the digital camera). In this way, when using, when you want to make the shooting effect better, set the ISO to 1, and set the ISO to 4 when the light is insufficient. Of course, there is not enough light when shooting at night, and the shutter speed is slow! Therefore, there are high requirements for the stability of hand-held, and it is best to shoot with a tripod.