Description
Pentax smc XW 3.5 Eyepiece Summary
The Pentax XW 3.5 is the most powerful focal length eyepiece in the XW series with unsurpassed optical clarity and a 70 degree field of view.
Features
- High-refraction, low-dispersion Lanthanum glass.
- Pentax Super Multi-Coatings (SMC) on all air/glass surfaces.
- Edge-blackened optics and optimised baffles minimise internal reflections.
- Optically corrected for use with focal ratios as fast as f/4.
- 20mm eye-relief and twist-up rubber-rimmed eyecups – perfect for spectacle wearers.
- Chromed barrels threaded to accept filters.
- Weatherproof to JIS Class 4 standards.
Specifications
| Lens Structure: | 8 elements, 5 groups |
| Focal Length: | 3.5mm |
| Apparent Field of View: | 70 degrees |
| Eye Relief: | 20mm |
| Attachment Diameter: | 1.25″ (31.7mm) |
| Filter Diameter: | 28.6mm |
| Field Stop Diameter: | 4.3mm |
| Eyepiece Ring: | Helicoid type |
| Height & Width: | 5.4″ x 2.4″ |
| Weight: | 14.3 oz. (405g) |
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