This is a filter I purchased at the beginning of this year for photographing wild birds (such as cranes, which are winter birds). Officially, it's a filter that cuts out the areas outside the visible light spectrum: ultraviolet below 370nm and infrared above 750nm. It's advertised to make photos of distant scenery and the like appear closer to how the human eye sees them, reducing the bluish tint. I've only used it a few times at the beginning of this year, and I don't plan on using it this winter (the season starting at the end of this year), so I'm thinking of selling it to someone who wants it. It costs about 17,000 yen on Amazon when new. The condition is close to unused, as I've only used it a few times, but I recommend buying a new one if you are particular about quality. I'm not sure about the appropriate price for camera accessories. If you have any questions about the price, please write a comment. HT PRO+ MC UV-IR-CUT 95mm Brand: KANI