Product Name: Eye Mask
Model: EN-DK25
Packing: transparent bag
Material: Rubber & Plastic
Replacement: Nikon DK-25
Supported models:
Nikon D3000 D3100 D3200 D3300
Nikon D5000 D5100 D5200 D5300
The eyecup is mainly used to prevent light from entering the eyepiece during long-term B-bulb exposure to take pictures; it can also prevent the eyepiece from being scratched when the camera is not used; and to prevent debris from entering the viewfinder when the camera is stored.
How to use eye mask or extender?
First remove the rubber eye cup when using it, and then insert the eye cup or the extender into the external card slot of the viewfinder.![](https://img.alicdn.com/imgextra/i2/1095506909/TB2NQ.zXOsd61BjSZFxXXcdPpXa_!!1095506909.png)
![](https://img.alicdn.com/imgextra/i1/1095506909/TB2CgbRXNsa61BjSsppXXbu1XXa_!!1095506909.png)
![](https://img.alicdn.com/imgextra/i2/1095506909/TB2RJAAXMUc61BjSZFoXXac1FXa_!!1095506909.jpg)