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The images they show of birds should include
details of the animal and unique and often very faint color patterns, and they should be able to
resolve them accurately. Since some birds are more active in the early morning or hours around
dusk, good birding binoculars will work well when the light is dimmer than usual. They also have
to be designed well for bird watchers who wear glasses.
Choose the Best Birding Binoculars
When choosing binoculars for bird watching, it's a good idea to test them out personally.
That way, you can know for certain how easy it will be to balance the binoculars steadily and how
much weight will be manageable to hold up to your eyes for extended periods of time. Note how the
binoculars feel against your face, whether they are comfortable, and if they fit well into your hands
or feel bulky and cumbersome. You should also have a basic knowledge of the inner workings of the
binoculars, so you can make an informed decision. The following is some good technical information
about how binoculars work, without getting too much into the confusing details:
Binoculars consist of a lens, a set of prisms, and an eyepiece. The lens takes what you
are looking at and focuses it into the back of the binoculars as an upside-down image. The image
is then reflected into prisms, which revert the image back to its rightful orientation. Finally, this
focused, magnified image is directed into the eyepiece, where the viewer can see it. The most important
factor of these three components that you should know is about the prisms.
All About Binocular Prisms
There are two basic choices to prisms in binoculars today - porro prisms or roof prisms. Each kind
of prism has its differences, and each has its advantages. The older type of prism is the porro
prism. These prisms are slightly offset from the eyepiece, resulting in a larger, more angled design
to the pair of binoculars. These are readily recognizable as being "fatter" than other binoculars,
as the light goes through the prism and is then redirected at an angle to eyepieces that are inset
somewhat into the center of the binoculars. These are most likely the binoculars you were familiar
with as a child. Often, porro prism binoculars are larger and heavier than their newer counterparts,
binoculars with roof prisms.
Roof prisms differ from porro prisms in that the prism is in direct line with the eyepieces instead
of being offset. This revolution in binocular design led to binoculars that were smaller, lighter,
and more compact. The eyepiece will line up directly with the lens on the opposite side of binoculars
made with roof prisms, whereas the eyepiece on a pair of binoculars with porro prisms will be slightly
inside the line of the lenses. While it may appear, with their streamlined look, that roof prism binoculars are a simpler design,
there are complexities inside that require more precision in the optics. Hence, they are a more
expensive design than porro prisms.
So which is the better pair of binoculars for bird watching? While roof prisms are lighter and
more convenient, as far as resolving details of the image a porro prism is the better value.
It all depends on what you are looking for in your pair of birding binoculars. Those who favor light
and compact designs should opt for a roof prism style, while those willing to put up with a more
bulky set of binoculars with better optics may do well with a porro prism style. In any case, get
yourself some birding binoculars and get out there in nature today - the birds are out there waiting
to be seen and admired by you and your family!
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