Pro’s Killer kit #01 Nikon DK-17M
Dougie says… This is a replacement eyepiece for the D800 and other higher-end Nikon D-SLRs. It offers a 1.2x magnification over the standard eyepiece and gives a larger viewfinder image. There is some darkening in the corners of the viewfinder, but not over the image itself. The extra magnification is useful when you’re using manual focus, and the DK-17M also offers a wider diopter range than the standard eyepiece, which could be useful for those who don’t want to wear glasses while they’re shooting but find the standard diopter range doesn’t offer enough adjustment.