APD
Apodization Filter LensesA radial neutral-density filter built into the lens that gradually reduces light transmission towards the outer aperture zone.
A radial neutral-density filter built into the lens that gradually reduces light transmission towards the outer aperture zone. Smooths bokeh by eliminating the hard edge of the aperture disc. Used in the Fujifilm XF 56mm f/1.2 APD. Causes ~1 stop light loss.