回答: 介个，，，，其实不是什么都不懂， 由 bibabobo 于 2014-01-04 12:15

Now with the Nikon D800E model, Nikon took an interesting approach. We know that the full low-pass filter cannot be completely removed, because it would cause the focal plane to move; plus, the camera still needs to be able to reflect infrared light rays. Instead of making a single filter with one layer, Nikon decided to still use three layers, but with two layers canceling each other out. As light rays get split into two with a vertical low-pass filter, then through the IR absorption filter, those same light rays get converged back when passing through a reversed vertical low-pass filter. Hence, instead of getting blurred details as in the first illustration, we get the full resolution.

I am not sure if the above method is the best way to deal with the issue, but I suspect that Nikon decided to take this route for cost reasons. It would probably be more expensive to produce a single IR absorption filter layer coated on both sides, than continue to use the same layers, but in a different configuration.

Here is a sharpness comparison between the Nikon D800 and D800E (Image courtesy of Nikon):


Read more: http://photographylife.com/nikon-d800-vs-d800e#ixzz2pSII1lI8