Dedicated eyepiece with 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: 60x when attached to a Fieldscope III or EDIII; 75x when attached to a Fieldscope ED82; and 40x when attached to a Fieldscope ED50.
Angular field of view (Real/degree): 1.2 when attached to a Fieldscope III or EDIII; 1 when attached to Fieldscope ED82; and 1.8 when attached to Fieldscope ED50.
Angular field of view (Apparent/degree): 64.3 for all models.
Field of view at 1,000m: Approximately 21 m when attached to a Fieldscope III or EDIII; 17 m when attached to a Fieldscope ED82; and 31 m when attached to a Fieldscope ED50.
Exit pupil: 1 mm when attached to a when attached to a Fieldscope III and EDIII; 1.1 mm when attached to a Fieldscope ED82; and 1.3 mm when attached to a Fieldscope ED50.
Relative brightness: 1 when attached to a Fieldscope III or EDIII; 1.1 when attached to a Fieldscope ED82; and 1.7 when attached to a Fieldscope ED50.
Eye relief: 17.0 mm for all models.
Weight: 190 g.
Model name1,2
40x/60x/75x Wide DS
Magnification (x)
With ED50/ED50 A: 40
Angular field of view (Real/degree)
With ED50/ED50 A: 1.8
Angular field of view (Apparent/degree)3
With ED50/ED50 A: 64.3
Field of view at 1,000 m (m)
With ED50/ED50 A: 31
Exit pupil (mm)
With ED50/ED50 A: 1.3
Relative brightness
With ED50/ED50 A: 1.7
Eye relief (mm)
With ED50/ED50 A: 17.0
Weight (g)
With ED50/ED50 A: 190
1. These eyepieces are not to be used for Fieldscope I series.
2. Turn-and-slide rubber eyecup.
3. Apparent field of view is calculated based on the ISO 14132-1:2002 standard.
Note: All eyepieces can be used for Fieldscope II series, ED78 series, III series, EDIII series and ED82 series.