Hoya 52mm Yellow Green Glass Filter (X0) #11
This filter for black and white photography is effective for portraits under tungsten lighting or outdoors with a foliage background.
By darkening red and absorbing green and green-blue, skin and lips are have a more natural tone.
Lighter than green,its' subduing effect is especially suited to outdoor scenics when softer lightening and detail increase is wanted.
Available in most sizes.