What are the functions of flash? How to choose a cost-effective flash?

I guess everyone is familiar with flash. We usually put it in a camera. It is actually a light compensation device. With it, we can also take very clear pictures at night. So what is the function of the flash? How to choose a cost-effective flash? The following article will share these problems with you, hoping to help friends in need.

What is the function of the flash?

Many people have the experience of being blindfolded when taking pictures. Flash has many functions, not only to supplement the light source, but also these functions: changing the color temperature, improving the illumination condition of the subject, reflecting the light, not destroying the scene environment of the subject, increasing the vision, combining multiple lights, shaping the image of the subject, reducing or increasing the contrast, instantly curing the subject and so on. The flash is powerful and can arrange special effects according to the photographer's requirements.

How to choose a cost-effective flash?

Now a large number of flashlights have come out, which are portable and affordable, and are ideal artificial light sources. However, there are many flashlights on the market now, and their performance is also very different. To buy a good flashlight, you need to master some skills. You should first consider the index of the flash. Index is the performance index of the flash, which indicates the luminous energy of the flash. The bigger the index, the stronger the flash. In order to adapt to a variety of shooting environments, it is best to choose a larger index.

How to choose a cost-effective flash II?

In addition, the performance should also be examined when choosing a flash. There are many kinds of flashlights on the market now, which can be simply divided into two types: 1. The special one can be controlled by a camera computer as long as it is plugged in, and the synchronous shutter can be automatically selected within a certain range, and the flash intensity can be adjusted according to different exposures; 2. The average user must adjust the aperture according to the table on the lamp according to different shooting distances in order to correctly expose. Special flash can only be used for TTL photometry cameras. Just look at the "hot boots" on the camera flash socket. If there are multiple contacts on it, this kind of camera can be used together. It is best to choose this kind of flash. For cameras with only one contact or only one flash socket, only ordinary cameras can be used. Of course, there are also two kinds of general manual and automatic, which can be selected according to needs.

How to choose a cost-effective flash 3?

In the past, people often had the experience of red eye when taking pictures. With the improvement of technology, this problem has been overcome, and many merchants have added the function of "eliminating red eye" in their designs. Generally, there are three flash modes for middle and low-grade digital cameras, namely, automatic flash, red eye removal and off flash. More advanced products also provide "forced flash" or even "slow flash" function. You can choose according to your actual needs!