WLLIAM 7x50 (10x50) ED Astro Binoculars雙筒望遠鏡
WLLIAM 7x50 (10x50) ED Astro Binoculars雙筒望遠鏡
William Optics 7x50 and 10x50 ED binoculars. Ideal as side instrument for star-gazing, or as an easy-to-carry companion during field trips, astro observations, bird watching, sailing and hiking. The 7x is recommended for astronomy, the 10x for other applications such as hiking and sailing.
ED Glass
• Extra-low dispersion glass objectives for an exceptional color correction
(almost no false colour).
• Enhanced FMC on all surfaces.
• 7.3 deg (6.6 for 10x version) field of view, will open up the skies to you.
• Extremely bright and sharp to the edges.
Eyepiece Individual Focusing
• Each eyepiece can be focused separately like in much more expensive
binoculars.
• Dioptric adjustment from +5 to -5.
Water Proof
• Nitrogen filling for fog and water proof.
• Shock proof and anti-slip.
Incredibly Compact
• Objective dust caps attached to the body.
• Its soft rubberized alloy body guarantees the highest durability.
• Strap and carrying bag included.
• 2-year warranty.
| Model Type | 7x50 ED Astro Binoculars | 10x50 ED Astro Binoculars |
| Magnification | 7x50 | 10x50 |
| Objective Diameter | 50mm | 50mm |
| Exit Pupil | 7.1mm | 5mm |
| Eye Relief | 23mm | 18mm |
| Prism System | Porro Prisms | Porro Prisms |
| Coating | Fully-Multi-Coated | Fully-Multi-Coated |
| Minimum focus distance | 4m | 4m |
| Focus System | Individual focus system (IF) | Individual focus system (IF) |
| Water Proof | Yes | Yes |
| Angle of View | 7.5° Wide Angle | 6.6° Wide Angle |
| Apparent Angle of View | 75° | 66° |
| Weight | 1600g (3.5 lbs.) | 1600g (3.5 lbs.) |
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