Nikon website says these are porro prism binoculars but Bill O (below in answered questions) says they are roof prisms. Which is it?

Roof prisms vs Porro prismsPorro prism binoculars were standard until the 1960's, when the Zeiss and Leitz companies introduced roof prism binoculars, whose objective lenses were straight in line with the eyepieces. Roof prism binoculars were compact, light, and comfortable to hold. They made the offset, zig-zag shape of the Porro prism design look as old fashioned as propeller-driven aircraft.Porro prism design has a jog in the light path through each barrel. Roof prism design looks as if the light goes straight through.

My eyes are not of equal strength. Does this model have a good range of compensation?

Yes, for each eye you can regulate, very good view

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Fully operational. Shipping worldwide, on schedule.Duty & taxes paid at delivery

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Nikon 7239 Action EX 7x50 CF Binocular , Black

Product ID: 50379608

Details

Age range (description)
Adult
Brand
Nikon
Colour
Black
Magnification maximum
7
Material
Rubber
Model name
7239

💧Waterproof up to 1m/5min

🔍7x magnification with 50mm lens

🕶️High-eyepoint for eyeglass wearers

Description

🔭 See More, Miss Less — Elevate Every Outdoor Moment!

ECO FRIENDLY OPTICS - Lead- and arsenic-free eco-glass lenses combine performance with environmental responsibility.
BRIGHT DETAILED IMAGES - Large 50mm objective lenses with multilayer-coated optics maximize light transmission for vivid clarity.
EFFORTLESS FOCUS COMFORT - Turn-and-slide multi-click rubber eyecups and smooth center focus deliver precision and ease, even with glasses.
RUGGED READY FOR ADVENTURE - Shock-resistant rubber armoring offers a secure grip and durability for all your outdoor explorations.
CRYSTAL CLEAR VISION IN ANY WEATHER - Waterproof and fog-free with nitrogen gas filling ensures uninterrupted viewing, rain or shine.

The Nikon 7239 Action EX 7x50 CF Binoculars deliver professional-grade optics with 7x magnification and 50mm objective lenses, optimized for bright, distortion-free views. Designed for durability and comfort, they feature waterproof and fog-proof construction with nitrogen gas filling, high-eyepoint eyecups for eyeglass wearers, and shock-resistant rubber armoring. Perfect for marine, hunting, sports, and nature enthusiasts seeking reliable, eco-conscious performance in any environment.

Specifications

ASIN	B0001EFIGQ
Age Range Description	Adult
Apparent Angle of View	42.7 Degrees
Best Sellers Rank	70,450 in Electronics & Photo ( See Top 100 in Electronics & Photo ) 514 in Binoculars
Box Contents	Action EX Extreme All-Terrain Binocular
Brand Name	Nikon
Coating	Multi-Coated
Colour	Black
Customer Reviews	4.6 4.6 out of 5 stars (244)
Digital Magnification Measured in Multiples (Digital Zoom)	7
Diopter Adjustment Range	Wide range for various light conditions and visual acuity
EU Spare Part Availability Duration	10 Years
Enclosure Material	Rubber
Exit-Pupil Diameter	7.1 Millimeters
Eye Relief	17 Millimeters
Field of View	7.15 Degrees
Focus Description	Manual Focus
Focus Type	Center Focus, Individual Focus
Global Trade Identification Number	00018208072392
Item Part Number	BAA662AA
Item Type Name	Action EX Extreme All-Terrain Binocular
Item Weight	1.36 Kilograms
Low Light Technology	yes
Manufacturer	Nikon
Manufacturer Part Number	7239
Model Name	7239
Model Number	7239
Number of Items	1
Objective Lens Diameter	50 Millimetres
Prism Type	Porro Prism
Product Features	Waterproof
Relative Brightness	7.14
Size Map	Full Size
Specific Uses For Product	Marine, Hunting and Shooting or Sports
UPC	018208072392
Unit Count	1.0 count
VESA Mount Type	Tripod Mount
Water Resistance Level	Waterproof
Zoom Ratio	7:1

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