At the height of the roaring stock market of the 1920's, the Dow Jones Industrial Average reached a peak of . In 1932, the Dow crashed to . It took over thirty-three years (1929 to 1955) for it to return to the 1929 level. An individual investing all of his money at the height would have waited more than three decades to merely break even! If, however, he had started a dollar cost averaging program, he would have made a tremendous amount of money thanks to his significantly lower average cost basis by the time the market returned to its previous level. Combined with reinvested dividends, he would have broken even in only a few years, and by the time the market reached its former level, have done very well.
Besides helping the weight loss process, the ketogenic diet has an anti-inflammatory effect, as well as many other benefits especially for people with high blood sugar, fatty liver, and obesity.
With the Nikon D800E DLSR model, Nikon took a different approach. 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.