Cokin P249 Adapter A filter to P holder

The Cokin A/P Adapter P249 allows the use of A filters on the P adapter. Therefore, you do not need to purchase P filters if you already have the corresponding A filters. However, vignetting may occur at wide-angle focal lengths (e.g., under 35 mm in full-frame). So, be mindful of whether the corners of the image are darkened.