Nikon DK-17C (-3) Eyepiece Correction Lens enables you to optimise the sharpness of your SLR viewfinder in conjunction with your own eyesight. Cameras without in-built adjustable eyepiece correction have base diopter value of -1, which is thought to be the optimal starting point for SLR users with good vision. The components of the cameras viewfinder combined with a clear (standard) eyepiece form a virtual image of the subject that is the approximate equivalent of a viewing distance of one meter. The numerical value of an eyepiece is represented by either a minus value (nearsighted) or a plus value (farsighted). The base diopter value does not affect the end value, thus if you require a diopter of -3, this eyepiece is the right choice for you.    ...

Optional Nikon eyepiece diopters allow you to optimize your SLR viewfinder's sharpness in conjunction with your individual eyesight. Eyepiece diopters are designed for specific camera models & are identified by a plus, a minus or a neutral numeric diopter value. ...

Nikon DK-19 Rubber Eyecup attaches to the viewfinder eyepiece minimizing extraneous light & vision fatigue. Camera's eyepiece lock remains usable. ...

Nikon DK-20 Rubber Eyecup attaches to the viewfinder eyepiece minimizing extraneous light & vision fatigue. It also fits D70 eyepiece. ...

Nikon DK-20C +2.0 Diopter Eyepiece Correction An easy-to-use viewing & focusing aid which allows near & farsighted photographers to view the finder image accurately without wearing eyeglasses. The optional Nikon dioptre correction eyepiece means that you can optimize your SLR viewfinder’s sharpness in conjunction with your individual eyesight. The dioptre correction eyepieces are designed for specific camera models & are identified by a plus, a minus or a neutral numeric dioptre value. ...

Eyepiece Cup DK-21 for the D200 & D80 DSLR cameras. ...

The DK-21M magnifies the finder image by approx. 1.17x. ...

Eyepiece shield made from comfortable soft rubber. Minimizes the amount of stray light that enters the viewfinder. ...

Spare or replacement rubber eyecup for the Nikon D5000 DSLR (as supplied with the camera).  Improves viewing comfort & prevents stray light from entering the viewfinder & diminshing contrast. ...

DK-80 AF Golden Mean Matte Focusing Screen. ...