K&F CONCEPT C-PL Filter for Insta360 Camera Lens @4090 Excellent condition. *Regarding precision instruments and lens optics* ・As I do not have expert knowledge, please purchase after confirming the images. ・Although we carefully check the optical system and cameras, we cannot guarantee a perfect check, so please make your judgment based on the images. ・We do not use strong light to check the optical system. We describe what can be confirmed with normal light and visual inspection. ・We have not tested the lens with an actual camera body. ・Please understand that we do not check for obvious overexposure. ・We perform maintenance and cleaning, but we do not guarantee perfection. *This isあくまでも弊社メンテナンススタッフの主観となりますので参考目安としてご利用ください. Please use this as a reference, as it is based on the subjective opinion of our maintenance staff. Please note that there are individual differences in the condition of scratches and dirt, so we cannot accept returns based on the condition. Please consider the product images. We will consider a discount for multiple purchases, so please feel free to comment.