Nikon 40x/50x Wide DS Eyepiece for Attaching a COOLPIX Camera

Dedicated Nikon 40x/50x Wide DS eyepiece with a wide angular field of view. Enables digiscoping with certain Nikon COOLPIX and digital SLR cameras, and the Fieldscope III, EDIII, ED82, and ED50. Features an advanced multilayer lens coating for superior light transmission and clear, high-resolution images.

Magnification

24x when attached to a Fieldscope III or EDIII; 30x when attached to a Fieldscope ED82, and 16x when attached to a Fieldscope ED50.

The angle of view (Real /Apparent degree)

3 when attached to a Fieldscope III or EDIII; 2.4 when attached to a Fieldscope ED82, and 4.5 when attached to a Fieldscope ED50, 64.3 for all models.

Field of view at 1000m

Approximately 31 m when attached to a Fieldscope III or EDIII; 24 m when attached to a Fieldscope ED82, and 47 m when attached to a Fieldscope ED50.

Exit pupil

1.5 mm when attached to a Fieldscope III or EDIII; 1.6 mm when attached to a Fieldscope ED82, and 1.9 mm when attached to a Fieldscope ED50.

Relative brightness

2.3 when attached to a Fieldscope III or EDIII; 2.6 when attached to a Fieldscope ED82, and 3.6 when attached to a Fieldscope ED50

Eye relief

17.8 mm for all models.