Optional Nikon eyepiece diopters allow you to optimize your SLR viewfinder's sharpness in conjunction with your individual eyesight. Nikon SLR cameras (without built-in adjustable eyepiece correction) have a base diopter value of minus one. Minus one is considered the optimum starting point for the majority of SLR users with normal vision. The combination of the camera's viewfinder components and a clear (standard) eyepiece form a virtual image of a subject on the camera's focusing screen that is the approximate equivalent of a viewing distance of one meter.
Each Nikon eyepiece diopter incorporates a numerical value, represented by a minus value (nearsighted) or a plus value (farsighted) number, enabling you to select the appropriate diopter for your vision and your camera model. The eyepiece's diopter value is, when combined with the viewfinders minus one value, the end-result value. No combination of the camera's base value of minus one and a given accessory diopter's value is required to arrive at the final desired value. In other words, if you require a diopter of plus 3, simply add a plus 3 diopter to your camera.
Please click here for a Compatibility Chart .
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Comments about Nikon DK-17C -3 Diopter for D3, D2-Series, D700 & F6 Cameras:
Eliminates the need for glasses when taking photographs; a whole lot easier.
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Comments about Nikon DK-17C -3 Diopter for D3, D2-Series, D700 & F6 Cameras:
When you correct the diopters in the camera wheel, the viewfinder zooms. And if you use the DK-17M (+DK-19), that magnifies 20%, the frame may be too large to see it entirely. So this helps me in that situation.
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Comments about Nikon DK-17C -3 Diopter for D3, D2-Series, D700 & F6 Cameras:
I had to buy one of these when I knocked my D3 over on its tripod last August (2008). Talk about a nightmare situation...[...] It took all of about 3 seconds to re-attach it, and I am back up and running! The only con is that it is fairly expensive for what it is. But what can you expect?
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Comments about Nikon DK-17C -3 Diopter for D3, D2-Series, D700 & F6 Cameras:
This eyepiece provided an easy, immediate solution to a radical change in my vision, following surgery for a retinal detachment. [...]
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