EYEPIECES
The eyepieces are interchangeable between scopes, but will give different magnifications because the focal lengths of the scopes will be different.  The magnifcations are given in each fieldscope section.

The first figure after the telescope size is the magnification, the second the field of view -  ie 52 means you can see an object 52 m long at 1000m (or 52 yards at 1000 yards).

(If you want the angular measurement, divide this number by 17.5 to get degrees.)

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SDL Eyepiece
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sdl40935
An F24 - F8, 5-group 8-element 'super' zoom, the 40935 SDL has been designed to maximise the performance gains inherent in Opticron ED objective lens fieldscopes at higher magnifications. Offering an optimum ratio between field of view and resolution, the main viewing characteristics of the SDL eyepiece are superior cross-field definition at all magnifications coupled with exceptional viewing comfort. Mechanically the eyepiece is waterproof, uses the M41.5 collar thread attachment, features a 90° rotation between high and low magnification settings plus a rotating eyecup that can be positioned to match individual needs. Supplied in soft padded case.
Eyepiece Code 40935E
Magnification (80)
Magnification (100)
Field/1000m (80)
Field/1000m (100)  		20-60x
27-80x
32/18
25/14

HDF EYEPIECES

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The preferred choice for quality and viewing comfort, HDF eyepieces have large diameter eyelenses and provide 'walk-in' field of vision. All eyepieces feature long eye-relief for full field of view, with or without spectacles.  The fixed magnification models are wide angle.

40859

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Eye-relief 15mm, eyelens diameter 21mm, length 49mm, weight 77g.

40860

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Eye-relief 15mm, eyelens diameter 18mm, length 61mm, weight 87g

40861

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Eye-relief 16mm, eyelens diameter 17mm, length 66mm, weight 84g.

40810
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Eye-relief 22mm, eyelens diameter 25mm, length 40mm, weight 151g

40809

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Eye-relief 18mm, eyelens diameter 23mm, length 51mm, weight 173g

40858

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Eye-relief 17mm, eyelens diameter 23mm, length 61mm, weight 212mm.

HDF Zoom 40862

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hdf-40862
Eye-relief 22-17mm, eyelens diameter 24mm, length 76mm, weight 206mm.

HR EYEPIECES
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These are a good choice as either supplementary eyepieces in combination with HDF or single eyepiece for the more value conscious requiring long eye-relief as all eyepieces offer full field of view with spectacles.

The HR eyepiece 40812 can be used as both a viewing lens and as the eyepiece part of the 41109 Photoadapter+eyepiece combination option for SLR Photography

40812

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Eye-relief 18mm, eyelens diameter 19mm, length 45mm, weight 61g.

40930

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Eye-relief 18mm, eyelens diameter 21mm, length 38mm, weight 83mm

40931

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Eye-relief 17mm, eyelens diameter 21mm,  39mm, weight 92g.  

40932

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Eye-relief 20mm, eyelens diameter 24mm, length 61mm, weight 158g

40933(Zoom)
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Eye-relief 18-14mm, eyelens diameter 18mm, length 55mm, weight 149g.

MM2 eyepieces

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40902

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Eye-relief 10mm, eyelens 14mm, length 23mm, weight 34g.

40903

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Eye-relief 13-11mm, eyelens diameter 16mm, length 51mm, weight 80g.

IS eyepieces
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40916

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Eye-relief 18mm, eyelens diameter 20mm, length 75mm, weight 143g.

40918

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Eye-relief 34-18mm, eyelens diameter 20mm, length 75mm, weight 143g.