Led photography fill light is a kind of auxiliary fill light, which is mainly used as an auxiliary lighting tool for outdoor photography or photography in low light.Such as outdoor back lighting photography, you can fill in the shadows to increase the level of expression in the dark parts, and the fill-in effect is stronger than that of the reflector.When the When the indoor lighting is insufficient or lighting modeling is needed, fill light is also need to be used.Earlier supplementary lights mainly used hand-held photography lights with bulky batteries as the power source. now most of fill lights use LED lamps, which can  be powered by an external power supply or can also use the internal battery which can be charged multiple times, and is small in size, light and convenient.

    The function of the photography lamp is to enhance the light, improve the brightness of the subject, and obtain accurate exposure on the film or photosensitive element. At the same time, it also has the function of shaping, beautifying and drawing characters with light.

    The main function of photography lamps is to enhance the light, then why in modern photography, incandescent lamps are rarely used, and portable LED photography fill lights and studio flash lights are needed?

    What we have to mention here is a key word in the use of color photography —color temperature.

    What is color temperature?

    Color temperature is the scale of light color of light source, the unit is k (Kelvin)

    In physics, color temperature refers to heating a standard black body. When the temperature rises to a certain level, the color starts to gradually change from white to blue. When a light source is the same color as the black body, we call the absolute temperature of the black body at that time as the color temperature of the light source.

    Color temperature is an important index that cannot be ignored in photography. Only the correct color temperature can produce accurate picture colors. If the color temperature is not accurate, what we usually call a color cast will appear. Therefore, whether shooting under natural light or using artificial light sources, we need to first consider color temperature in photography.