New Optolong Filter 2-inch L-Quad Enhance Filer Professional
New Optolong Filter 2-inch L-Quad Enhance Filer Professional L-Quad Enhance Filter (L-QEF) L-Quad Enhance Filter is a quad bandpass light pollution suppression filter for colour cameras. It effectively suppresses the transmission of light pollution wavelengths, especially light pollution generated by artificial lighting (including mercury and sodium lamps), as well as the effects of natural skylight-induced effects on the shot, thus...