What is a filter?

Light filters are one of the cheapest accessories that can dramatically change the look of a photo. As the name suggests, the filter has the function of filtering light. In photography creation, the filter plays the role of "seasoning". If you can use filters flexibly, you can improve the performance of your photography. Using filters in black and white photography can change the tone of the scene and make the photos closer to nature. Using filters in color photography can change the color temperature of the light source, the color of the subject, or create special visual effects.