We can provide several kinds of filters such as UV, warm and cool, Skylight, ND, Color Graduated, Softnet, Fog, CPL, Speed, Close-up, Star filters, etc. The following is an introduction of filters we use most frequently.
UV filter is used to make the photo more clear and to protect the lens.
CPL filter is used to reduce glare and enhance color saturation while shooting outside (especially the sky, water and plants).
Warm and cool filters are used to change the white balance while shooting the landscape, underwater and shooting in special light.
Color Graduated filter is used to control the intensity of light, to reduce the dark corner of the photo, and to cope with the dark gap in landscape photography.