Customer Reviews

Nikon Diopter -4.0 Correction Eyepiece for D50/70/70S/100/200, N50/60/65/70/80/6006, Pronea, FM10 cameras

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If you wear prescription glasses and look through the viewfinder, your glasses may get in the way. If this is annoying, diopter correction lenses allow you to see in focus through the viewfinder without wearing glasses.

If you look through the viewfinder and it is out of focus even after using the diopter control adjuster, then you may want to get one of these correction lenses. How do you know which one to get? If you know what your eyeglass prescription is, then round up to the nearest number. For example, if your prescription is -3.50 (nearsighted), then get a -4 diopter. You can dial in the focus with with the diopter control on the camera once installed.

The diopter correction eyepiece slides over the viewfinder tabs just like the rubber eyepiece (DK-21). However, once the diopter is fitted, the rubber eyepiece will NOT fit over the diopter. This seems like a design oversight. It looks like something is missing. There may be me a way to remove some plastic on the rubber eyepiece that allows for it to slide onto the diopter but it will not mount flush with the camera body; it will jut out due to the diopter lens between them.

The lack of a rubber eyepiece that fits over the diopter is a minor aesthetic issue. It does what it is supposed to do to correct focus without wearing glasses so if you need one, get one.


Here's a hint to find the correct focus with the correction diopter after it has been installed:
1. focus on something far away
2. point the camera on something close so that the image is out of focus (this makes step 3 easier)
3. adjust the diopter control on the camera so that the auto-focus points (the lines and boxes you see through the viewfinder) are crisp and clear.
4. take a few test shots using manual focus to see if the pictures came out as they looked through the viewfinder.
5. repeat step 3 and 4 if necessary
6. Once objects can both be viewed and shot in focus, the diopter control is set. Now enjoy taking pictures!


Model DK-20C
Made in Japan
This also fits the D90.