Thank you for viewing! I only used this once, as it was needed for a shoot. It's a valuable item that's no longer in production, so I'd like to pass it on to someone who can make good use of it. I'm also selling a 49mm version, would you like to consider it together? Feel free to request photos or ask any questions! ~Product Description~ This is a set of three filters: a blue filter (B), a green filter (G), and a red filter (R), which are the three primary colors of light. In color photography, by using the multiple exposure function of the camera and switching between the blue, green, and red filters, you can apply the "principle of the three primary colors of light" to achieve a special effect where stationary subjects remain as they are, while moving subjects are broken down into three colors. You can also use them as single-color filters for monochrome photography. They can also be used with digital SLR cameras that support multiple exposure shooting. ◆ Exposure for Three-Color Separation Photography When using the SP color set for three-color separation photography, open the aperture wider than the basic exposure, using the table below as a guide. The correction value will change slightly depending on various conditions such as the light source and subject. Depending on the exposure balance, the filter's color may appear even in stationary areas.