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Message: <blockquote data-quote="Brian" data-source="post: 252867" data-attributes="member: 17621">I read the Nikon link- two Horizontal Displacement Filters placed back-to-back rather than using a horizontal and a vertical.Seems like a lot of work for nothing, if the two filters are misaligned with respect to each other, you will not get perfect canceling. Like two prisms- hard to get two that match perfectly, and get some fringing. What you get with the Nikon method is two plates with the same index of refraction. So- keep the thickness and refraction a constant. The M Monochrom left the glass layer in where the Bayer filter would be, but left the Dye out. Just like a Jack Nicholson Bacon, Lettuce, and Tomato sandwich.</blockquote>