Product size: The inner diameter of the product is 21mm, the maximum outer diameter is 45mm, and the height is 14mm. Manual measurements, please allow slight errors Compatibility: This product is compatible with Nikon D2, D3, D4, D700, D800, F6 SLR, Df, D4, D3, D3s, D3x, D700, D800, D810, F6, F5, F4, F3HP Installation method: This product is installed between the camera viewfinder and the camera's built-in eyepiece DK-17. First, unscrew the camera's built-in DK-17 circular eyepiece, and then connect the DK-19 and DK-17 to the camera viewfinder in turn. Product function: This product can minimize the amount of stray light entering the viewfinder and reduce contrast, making viewing more comfortable, which is especially useful for photographers wearing gl.
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