DS Fieldscope Eyepieces for Digiscoping

Key Features

DS eyepieces make it easier than ever to use a Nikon Fieldscope with a COOLPIX digital camera.

Wide DS Fieldscope Eyepieces

16x/24x/30x Wide DS

27x/40x/50x Wide DS

40x/60x/75x Wide DS

  • Using the appropriate FSB series Digital Camera Bracket enables a COOLPIX digital camera to be attached to a Fieldscope.
  • Vignetting can be reduced by setting zoom to the wide-angle position*
  • Rubber eyecup for eye observation is supplied
  • *Vignetting may occur with some COOLPIX cameras.
  • Note:
    • ●Wide DS Fieldscope eyepieces can be used with Fieldscope II series and ED78 series; however, they cannot be attached to Fieldscope I series.
    • ●Wide DS Fieldscope eyepieces can be used with EDG Fieldscopes via optional Fieldscope Eyepiece Mount Adapter EMA-1.

Specifications

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16x/24x/30x Wide DS
With Fieldscope ED50/ED50 A With Fieldscope III/III A/EDIII/EDIII A With Fieldscope ED82/ED82 A
Magnification (x) 16 24 30
Angular field of view
(Real/degree)		 4.5 3.0 2.4
Angular field of view* (Apparent/degree) 64.3 64.3 64.3
Field of view at 1,000m
(m) (approx.)		 79 52 42
Exit pupil (mm) 3.1 2.5 7.5
Relative brightness 9.6 6.3 7.3
Eye relief (mm) 18.7 18.7 18.7
Weight (g) 170 170 170

Swipe horizontally to view full table.

27x/40x/50x Wide DS
With Fieldscope ED50/ED50 A With Fieldscope III/III A/EDIII/EDIII A With Fieldscope ED82/ED82 A
Magnification (x) 27 40 50
Angular field of view
(Real/degree)		 2.7 1.8 1.4
Angular field of view* (Apparent/degree) 64.3 64.3 64.3
Field of view at 1,000m
(m) (approx.)		 47 31 24
Exit pupil (mm) 1.9 1.5 1.6
Relative brightness 3.6 2.3 2.6
Eye relief (mm) 17.8 17.8 17.8
Weight (g) 180 180 180

Swipe horizontally to view full table.

40x/60x/75x Wide DS
With Fieldscope ED50/ED50 A With Fieldscope III/III A/EDIII/EDIII A With Fieldscope ED82/ED82 A
Magnification (x) 40 60 75
Angular field of view
(Real/degree)		 1.8 1.2 1.0
Angular field of view* (Apparent/degree) 64.3 64.3 64.3
Field of view at 1,000m
(m) (approx.)		 31 21 17
Exit pupil (mm) 1.3 1.0 1.1
Relative brightness 1.7 1.0 1.2
Eye relief (mm) 17 17 17
Weight (g) 190 190 190
  • *Nikon has adopted a calculation method based on ISO 14132-1:2002, and therefore, values for the apparent field of view have changed from those previously stated. For details, click here.
Related Links

Fieldscopes