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Binocular tips |
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| What does it all mean? Below are
examples of typical binoculars purchased based on use. If the
terminology is not familiar use the binoculars glossary for
clarification. If you have any additional questions please contact
us. |
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| Recommended Models |
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| Marine |
Any Waterproof Model with
a large objective diameter, and Rubber Armor, 7X50, 7X42,
8X42 & 10X42 |
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| Concerts/Sports |
5X25 & 8X25 Xtra-Wide
Angle, All 7X35, 10X50 & 12X50 for stadiumsTheater
4X30, 7X18 & 7X21 Compacts, Any Zoom or Wide Angle
model |
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| Astronomy |
Any 10X42, 10X50 &
12X50 with Tripod adapter |
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| Hunting |
All Rubber Armored, Waterproof
and Fog proof Models, 7X To10X Models. For general hunting,
12X or16X for distant Game/Varmints, Compacts fit in a
pocket for hunters on the move. |
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| Birding/Marine |
8X42 is the Standard,
For details in smaller species at a distance, Compacts
with a 30mm or greater objective, any binocular with Long
Eye Relief and good Close Focusing Ability. |
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| Binoculars
Glossary (courtesy Swarovski binoculars) |
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Armour |
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A shock absorbing cover
on the optical instrument made of a rubber or polyurethane
shell |
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Brightness |
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Measures how bright an
image appears through binoculars or spotting scope. The
more light that is let in through the instrument, the
brighter the image appears. Brightness is determined by
three elements: the power, size of objective lens and
coatings. Fully multi-coated optics can increase relative
brightness by more than 50 percent. |
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Centre
Focus |
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Both binocular eyepieces
are focused at the same time by a center wheel or lever.
This is the best and fastest method. |
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Coatings |
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Coatings on the optical
elements (lenses and prisms) of optical instruments help
to reduce light loss and glare from reflection and contrast.
There are various types of coatings offered by different
companies, including coatings that block ultraviolet light.
It is generally acknowledged that fully multi-coated is
the best. Here are some types you will encounter:
Coated Optics. Coating on one side of the objective lens system,
one side of the ocular lens system, and the long side
of the prism.
Fully Coated. Coating
on both sides of the objective lens system, both sides
of the ocular lens system, and the long side of the prism.
Fully Multicoated Fully coated optics on all air-to-air glass surfaces with
one or more additional chemical coatings. |
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Depth
of Field |
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Refers to the distance
seen near to far through a binocular or spotting scope.
A generous depth of field assists when trying to locate
close-at-hand subjects, such as a bird in a maze of branches.
Generally, binoculars with lower magnifications offer
greater depth of field, and a wider field of view than
binoculars with higher magnification. |
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Diopter |
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Eyesight adjustment collar
found on the right or left eyepieces of binoculars, allows
user to adjust for variances in vision between their right
and left eyes. |
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Eyepiece |
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Also known as the ocular,
the lenses closest to your eyes. The eyepieces serve as
the magnifying lenses and consist of multiple optical
elements. |
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Eye
Relief |
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A function of optical
design, this is the distance a binocular or scope can
be held away from the eye and still present the full field
of view. Long eye relief (16mm to 20mm) is especially
useful for those who wear glasses. Some manufacturers
also provide adjustable eyecups that accommodate both
eyeglass and non-eyeglass wearers. |
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Exit
Pupil |
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The exit
pupil is the diameter of the beam of light that passes
through the binocular into your eyes. Larger exit pupils
are more advantageous in low light conditions. To calculate
what the exit pupil of a binocular is, divide the objective
diameter or lens size of the binocular by the magnification.
Using this formula, a 7x42 binocular has an exit pupil
of 6mm (42 divided by 7). Exit pupils larger than 7mm
are of no benefit because the pupil of the human eye never
gets larger than that. |
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Field
of View |
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The field of view is the
width of an area you can see at 1,000 yards. Most binoculars
have the field of view indicated on them. You can measure
field of view in degrees or feet. Each degree equals 52.5
feet of width at 1,000 yards. So, a binocular that indicates
an eight-degree field of view has a 420-foot field of
view at 1,000 yards (8 x 52.5 = 420). |
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Individual
Focus |
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Each eyepiece must be
adjusted to bring an object into focus. |
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Near
Focus |
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The closest you can be
to an object while still maintaining visual clarity. Also
called close focus. |
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Objective
Lens |
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The front lens of a binocular,
or the farthest from your eye. |
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Objective
Lens Size |
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Measured in millimeters,
the diameter is always printed along with the magnification
on a binocular. In a 10x42 binocular, the second number,
42, indicates that the objective lens' diameter is 42mm.
The larger the number, the more light gathered and the
brighter the image, an important feature in lower light
conditions. |
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Permanent
Focus |
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Focus is fixed by the
manufacturer to the optimum point, usually 50 to 75 feet.
This feature is not found in premium optics. |
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Power |
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The amount of magnification.
In a 10x42 binocular, the first number, 10, refers to
the fact that you will be magnifying an object ten times
closer than the naked eye. |
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Resolution |
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The ability of a binocular
or spotting scope to distinguish fine detail, probably
as important as magnification. |
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Weatherproofness |
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Optical instruments that
are sealed against dust, pollen and moisture. A very few
superior binoculars and spotting scopes are waterproof
/ submersible - as opposed to water resistant, weather
resistant and splash proof - and are able to withstand
complete immersion and remain dry inside. |
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Just some quick feedback.
Excellent pricing on the binoculars I bought. The cheapest Canadian price I could find. The local cost in-store for the binoculars I bought was 25% more than your price.
Didn`t really experience any personal customer service. However the service in general was great! Very fast delivery given the time of year (ordered Jan. 1st).
Thank a lot! I`m very happy with my binoculars (Nikon Monarch 10x42).
Mark |
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