Classic Porro Binoculars

8x40 7x50 10x50 12x50 20x50

Model：BM1142
Magnification :10 x
Objective Lens : 50mm
Field Angle : 6.9°
Product description: The 8x40 Wide-Angle Binoculars feature an ultrawide 68° apparent angle of view to produce a panoramic view from dawn to dusk.
INQUIRY

Key Features:

●BK7 Porro Prism Optical Path

● Wide 68° Apparent Angle of View

● Slip-Resistant Rubber Armoring

● Tripod Adaptable with Optional Adapter

● Twist-Up Rubber Eyecups

Overview

The 8x40 Wide-Angle Binoculars feature an ultrawide 68° apparent angle of view to produce a panoramic view from dawn to dusk. Large antireflection fully coated objectives draw in copious amounts of light to ensure images are bright and clear with accurate color and improved contrast. Utilizing traditional Porro prisms enhances the experience by presenting a rich depth of field that gives the view a true 3-D appearance. Whether you're on the trail, at the range, or birding, the 8x40 binoculars are sure to become your constant companion on all your outdoor adventures.

Optical Performance

● High 8x magnification to make detailed observations of distant subjects
● Large 40mm objectives boost light-gathering capabilities for better views in difficult and low-light conditions
● BK7 Porro prism light path produces a rich depth of field to more easily discern the relative distances between two objects in the field of view
● Antireflection fully coated optics ensure images are bright and clear with improved contrast and accurate color representation
● Ultrawide 68° apparent angle of view helps to minimize the distracting hand shake common with high-power optics while providing a spacious panoramic view
● 447' field of view at 1000 yards (8x40mm)

Use and Handling

● Large slip-resistant center focusing wheel is easy to manipulate, even when wearing gloves
● Right-eye dioptric correction enables users to compensate for individual optical prescription
● Fold-down rubber eyecups for comfortable use with or without eyewear
● Tripod mountable with optional adapters enables hands-free use with limited vibration or arm fatigue
● 5.0mm exit pupil will completely cover pupils as they open in low light (8x40mm)
● 20.0mm eye relief (8x40mm)

Construction Details

● Impact resistant aluminum alloy mirror body
● Protective rubber armoring with dimpled palm-pad accents provide a secure and slip-resistant grip
● Includes carrying case and neck strap
● Large textured center focus wheel

Specifications Performance

Specification	8x40mm	7x50mm	10x50mm	12x50mm
Magnification	8x	7x	10x	12x
Objective Lens Diameter	40 mm	50mm	50 mm	50mm
Angle of View	8.5°	7.2°	6.9°	5.0°
Field of View	149 m @ 1000 m	123 m @ 1000 m	99 m @ 1000 m	87 m @ 1000 m
Field of View	447ft @1000 yd	369ft @1000 yd	297ft @1000 yd	261ft @1000 yd
Minimum Focus Distance	16.40 ft / 5 m	16.40 ft / 5 m	16.40 ft / 5 m	29.52 ft / 9 m
Exit Pupil	5.0 mm	7.1 mm	5.0 mm	4.1 mm
Eye Relief	20.0 mm	20.0 mm	20.0 mm	18.0 mm
Diopter Adjustment	Yes / ±4	Yes / ±4	Yes / ±4	Yes / ±4
Focus Type	Center	Center	Center	Center
Prism Type	Porro (BK7)	Porro (BK7)	Porro (BK7)	Porro (BK7)
Lens Coating	Fully Multi	Fully Multi	Fully Multi	Fully Multi
Eyecups	Twist-Up	Twist-Up	Twist-Up	Twist-Up
Weight	680 g / 23.98 oz	871 g / 30.72 oz	871 g / 30.72 oz	871 g / 30.72 oz
Size	185X58X143 mm	196X62X170 mm	196X62X170 mm	196X62X170 mm