This graded density filter, is worth nothing at all !!!!!! Unable to make a picture with a density of uniform light regardless of the scale used. Nothing like a good natural filter (even very low end) whose density is well distributed over its entire surface. A true catastrophe that thing, not even good for testing. Totally unnecessary spend your chemein this material is not worth the price it is sold ....... A catalog imperatively remove !!!!!!! Back on the same day.
