This is a filter set (all 40.5mm) used with the Nikon AF-S 400mm f/2.8 E FL lens. I used it mostly for sunrise and sunset photography, so I didn't use it very often. I don't think there's any degradation of the C-PL film (effect) due to sunlight. All items are in beautiful condition. Discounts are negotiable if you purchase with other items I have for sale (combined shipping). I will not respond to unreasonable price reduction comments (and may block the user). No claims, please.