Nikon PROSTAFF 3S  User Manual

The Nikon PROSTAFF 3S binoculars represent a significant advancement in portable optical technology, designed for outdoor enthusiasts and casual users alike. Below is a comprehensive overview of their features, specifications, and benefits.

1. Design and Build Quality

The PROSTAFF 3S binoculars are engineered with a focus on portability and durability. They feature a compact and lightweight design, with an objective lens diameter of 42mm, making them easy to carry during activities such as hiking, birdwatching, or attending sports events. The body is constructed from fiberglass-reinforced polycarbonate resin, ensuring both strength and a comfortable grip. Additionally, the rubber armoring provides shock resistance, enhancing the overall durability of the product.

2. Optical Performance

These binoculars come in two magnification options: 8×42 and 10×42. The optical system includes high-reflectivity silver-alloy mirror coatings on the prisms and multilayer-coated lenses that deliver bright, clear images even in low-light conditions.

• Magnification Options:
  • 8x Magnification: Offers an angular field of view (real) of 7.2° and an apparent field of view of 53.4°, allowing users to see a wider area.
  • 10x Magnification: Provides an angular field of view (real) of 7° with an apparent field of view of 62.9°, ideal for detailed observations at greater distances.

The binoculars also have a close focus distance of just 9.8 feet, enabling users to observe nearby subjects clearly.

3. User Comfort Features

Designed with user comfort in mind, the PROSTAFF 3S binoculars feature:

• A long eye relief design (15.7mm for 10x model; 20.2mm for 8x model) that ensures a clear field of view without vignetting, making them suitable for eyeglass wearers.
• Turn-and-slide rubber eyecups with multi-click adjustments facilitate easy positioning at the correct eyepoint.

4. Weather Resistance

These binoculars are built to withstand various environmental conditions:

• They are fully waterproof (up to 1 meter/3.3 feet for up to 10 minutes) and fog-proof due to O-ring seals and nitrogen gas filling.
• This makes them reliable companions for outdoor adventures in unpredictable weather.