The B+W 105MM Yellow Orange Filter is a powerful photographic filter that darkens violet, blue, and green colors strongly.The B+W camera filter has the ability to darken even Yellow-Green to a certain extentThe B+W 105mm Yellow Orange Filter is an ideal choice for outdoor nude photography since it raises the contrast between the lighter bodies and darker landscapesThe B+W 105mm Yellow Orange Filter Photography Filter comes with a filter factor of 4