8X25mm Travelite

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This multicoated center focus Nikon 8x25mm Travelite porro prism binocular has aspherical elements in its eyepieces for low distortion, plus costly BaK-4 porro prisms for more performance than you might expect from its low price. Its lightweight black polycarbonate body is lightly rubber armored. Finger grooves are molded into the body for a secure grip. There are no sharp corners to snag clothing as the binocular slips into pocket, purse, or auto glove compartment. It has soft rolldown rubber eyecups and a soft vinyl case that attaches to your belt for no-hands carrying. The diopter adjustment on the right eyepiece is a click-stop design that won’t accidentally get out of adjustment when you least want it to. The Travelite is a handy bino for nature walks, traveling, sports, the theatre, etc. – anywhere compact size and light weight are more important than very bright images in low light.

This 8 x 25mm Travelite is the latest version of a long series of best-selling binoculars that dates back to the Nikon Venturer II that was rated a “best buy” in a leading consumer testing magazine a number of years back, with the highest total score of all 25 binoculars tested. Its updated aspherical optics make the Travelite an even better binocular optically than that “best buy.” An excellent choice as a second binocular, a travel binocular, or as a first birding binocular for the young birder or the birder on a budget.

Optical Type:
The optical design of a binocular or spotting scope. A binocular can be either a porro prism (whose objective lenses are off-set and spaced further apart than the eyepieces) or a roof prism (whose objective lenses are in line with the eyepieces). A spotting scope can be either a porro prism or roof prism refractor or a catadioptric (a combination of lenses, mirrors, and prisms).
Porro Prism
Field of view:
The field of view (FOV) is the amount of observable world one can see at any given moment.
5.6°
Field of view 1000 yards:
293'
Exit Pupil:
The circular image or beam of light formed by the eyepiece of a telescope. To take full advantage of a scope's light-gathering capacity, the diameter of an eyepiece exit pupil should be no larger than the 7mm diameter of your eye's dark-adapted pupil, so that all of the light collected by the telescope enters your eye. (The eyepiece exit pupil diameter is found by dividing the eyepiece focal length by the telescope focal ratio.) Your eye's ability to dilate declines with increasing age (to a dark-adapted pupil of about 5mm by age 50 or so). For those in this age group, eyepieces with exit pupils larger than their eyes can dilate to simply waste their telescope's light-gathering capacity, as some of the scope's light will fall on their iris instead of entering their eye.
3.13mm
Relative Brightness:
A number used to compare the brightness of binoculars or spotting scopes of similar magnification. The relative brightness is determined by squaring the diameter of the exit pupil. The larger the relative brightness number, the brighter the image.
9.8
Twilight Factor:
A number used to compare the effectiveness of binoculars or spotting scopes used in low light. The twilight factor is found by multiplying the size of the objective lens (in mm) by the magnification and then finding the square root of that result. The larger the twilight factor, the more detail you can see in low light. A twilight factor of 17 or better if usually required for reasonable low light use.
14.14
Eye Relief:
Eye relief is the distance from the last surface of the eye lens of an eyepiece to the plane behind the eyepiece where all the light rays of the exit pupil come to a focus and the circular image is formed, sometimes called the “Ramsden Disk.” This is where your eye should be positioned to see the full field of view of the eyepiece. If you must wear glasses because of astigmatism, you’ll usually need at least 15mm of eye relief or longer if you want to see the full field of view with your glasses on.

A note on our eye relief figures: Quite often, our eye relief figures will differ from those of the manufacturer. This is because we measure the “usable” eye relief, while the manufacturers specify their usually-longer (but technically correct) “designed” eye relief.

The eye lens of the eyepiece is normally recessed below the rubber eyeguard or rubber rim of the eyepiece to keep the lens from being scratched during use. An eyepiece might have a “designed” eye relief of 15mm (and the eye relief will truly measure 15mm from the eye lens to where the image forms). However, if the eye lens is recessed 3mm below the eye guard, the Ramsden Disk forms only 12mm above the eyepiece body (the 15mm “designed” eye relief, less the 3mm of eye relief made unusable by having the eye lens recessed into the body of the eyepiece). This “usable” eye relief of 12mm (measured from the rolled-down eyeguard – the closest point you can get your eye to the eye lens – to where the image forms) is the eye relief figure we would measure and list in this website.

Why is it important to list the “usable” eye relief? For those people who don’t wear eyeglasses while observing, a few mm difference between the eye relief they expect from the manufacturer’s literature and the shorter eye relief they actually get in real life doesn’t mean a lot. They can simply move a little closer to the eyepiece to see the full field, and never realize that the eye relief is a little shorter than they expected. However, some people must wear eyeglasses while observing, because of severe astigmatism. These observers can’t move closer to the eyepiece if the eye relief is shorter than expected because their glasses get in the way. For these people, the real life “usable” eye relief is more important than the technically correct but sometimes not fully usable “designed” eye relief. We measure and list the actual usable eye relief so that people in the real world can pick the eyepieces that will work best for them.

14mm
Interpupillary Distance:
56-72mm
Close Focus:
How close you can get to an object and still see a sharp image of it in your binocular or spotting scope is called the “close” or “near” focus
9.8'
Height:
4.3"
Armored:
A binocular or spotting scope whose body is clad in rubber or polyurethane armor is said to be armored. Armor can be applied for looks, a better grip, noise-proofing, etc. An armored body does not guarantee that a binocular or spotting scope is waterproof, although most waterproof optics are armored.
Yes
Waterproof:
No
Weight:
The weight of this product.
9.3 oz.
Warranty:
25 years
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Nikon - 8X25mm Travelite

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Nikon - 8X25mm Travelite
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Our Product #: N825V
Manufacturer Product #: 7277
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MSRP: $128.95
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This Nikon Travelite multicoated center focus binocular has aspherical elements in its eyepieces for low distortion, plus costly BaK-4 porro prisms for more performance than you might expect from its low price . . .





. . . our 34th year