Kowa 8x30 Porro-Prism Binocular YF30-8 Product Info

Kowa released their YF binoculars in August of 2011, and there is a story behind these that we really love. The YF30 binoculars are somewhat unusual in the optics market because they were designed and optimized just for kids. Children will like the YF binoculars because they are compact and lightweight. They have a large focus knob that turns easily and smoothly, and they were specifically made to fit smaller faces, though they will accommodate most adults as well.

Features

• All lenses and prisms of the YF and SV Series are fully multi-coated. In addition, the roof prism (SV Series) is phase coated and has a highly reflective coating that minimizes the loss of light and produces a clear visual range and sharp image. Even though costs were reduced through simultaneous product development and the implementation of an objective focus mechanism (SV 32/42), the superior optical performance was maintained without sacrificing important features like being waterproof and dry nitrogen gas filled.
• The stylish design is ideal for bird watching, nature observation or any other outdoor activity. Depressions placed in the rubber armor make it easy to grip and hold the binoculars.
• The lightweight design of the YF and SV Series allows for extended use in the field. Even with a large 50mm objective lens, the weight of the SV 50 at 740g (10× model) is on par with most 42mm class binoculars. You can enjoy the overwhelming brightness of a 50mm lens with the weight of a 42mm class binocular. With a weight under 500g, the YF Series is ideal for children and women.
• The binoculars are waterproof and filled with dry nitrogen gas to prevent the internal structure from fogging.
• Wide and Comfortable Neck Strap
• 2 Types of Rubber Armor
• Long Eye Relief
• Kowa KR Coating
• Twist-up Eyecups
• Small Form for Young Adults

Specifications

• Model: YF30-8
• Magnification: 8X
• Objective Lens Diameter: 30mm
• Real Field of View: 7.5°
• Exit Pupil 3.8mm:
• Relative Brightness: 14.4
• Twilight Factor: 15.5
• Eye Relief: 16.0mm
• Field of View at: 1000m/yds 132m/yds
• Dimensions (Length x Width x Height): 160x114x48mm (6.3x4.5x1.9in)
• Weight: 475g (16.7oz)

Package Contents:

• Kowa 8x30 YF Series Porro-Prism Binocular YF30-8