Does the SLR camera need a flash? What's the role?

A SLR camera needs a flash. Generally, SLR cameras have built-in flash, but the flash index is relatively small, mostly 12. If such a small flash is obviously not enough in a large scene, such as a large stadium, then an external flash must be used. According to the flash index, there are 24, 36, 40, 42, 58 and so on. The greater the flash index, the greater the distance and range of taking pictures.

SLR cameras need to be equipped with flash: when the light is insufficient, use flash to fill the light. When the color is off, you can use the flash to correct the color. When the contrast is high, you can use a flash to reduce the contrast.

Extended data

You don't need a flash to shoot the night scene, but you must use a tripod. In addition, the night view of the landscape class is like this, but if you need the characters in the night view as a souvenir, you definitely need a flash. In order to ensure the night scene effect, slow shutter and flash are needed.

Generally speaking, small DC to SLR cameras are equipped with flash. This kind of flash can't change the illumination angle, so that the subject has a strong shadow after receiving the light, which makes the whole photo feel stiff. Therefore, the use of this built-in flash is usually to fill the light for the main body in dark or backlight environment. It should be noted that this kind of flash can only be used as the main supplementary light because its light intensity is usually weak.

The external flash lamp can remotely control the external lighting lamp through the transmitter and receiver, so that the light source position of the flash lamp can be changed more flexibly. Compared with the built-in flash, this external flash can have stronger output, and can change its illumination angle to create various lighting effects. The external flash can also be added with color filter paper to change the color temperature of the flash to match the white balance of the field environment.