Archive for March, 2009

Night Vision Binoculars – Buying Tips

Night vision binoculars are exciting. They literally allow you to see well in the night. They have many uses for kids and adults, and can be used Buy Xenical for night hunting, boating or just for fun.

Use of night vision binoculars

There are many ways you can use a night binoculars. Here are the most popular ways people use binoculars with night vision.

- Exploring caves

- Scouting game

- Security and surveillance

- Camping

- Wildlife observation

- Night hunting

- Nighttime navigation

- Night fishing and boating

Many night vision binoculars work similar to digital cameras, they have a built in flash. The size varies a lot - smaller binoculars are more expensive, but they might be just as powerful as the big ones. When choosing a night binocular first decide what you are going to use it for. If it just for the kids to play, then go with a less expensive model that they will not break easily. If you are going to use the binoculars yourself go for a higher quality optics which naturally would cost more.

How night binoculars work?

Optics in night vision binoculars amplifies the existing light. They use not only light visible to our eyes, but also infrared spectrum. Quality night binoculars have an infrared illuminator which increases the available infrared light.

All things you see through a night binocular appear green, because you don't look directly at the objects but at their image on a phosphor screen.

Depending on light conditions at night binoculars perform differently. You will not see anything if there is no single star in the sky and no street lights. The lower the light situation is, the more powerful night binocular you will need. You can get Gen 1, Gen 2 and Gen 3 night binoculars. Gen stands for generation. Gen 1 are all right during a night with full moon and bright stars. For a crescent moon Gen 2 works better, and for a dark cloudy night you will need Gen 3 binoculars. Generation 1 night binoculars are affordable, Gen 2 and Gen 3 binoculars are much more expensive.

Kids enjoy night vision binoculars

If you are going on a long trip, a night vision binoculars will be excellent entertainment for kids. They will stare in the windows for hours and discover many thing that otherwise would be missed.

When it comes to binoculars you always get what you paid for. Brand name binoculars like Yukon, Night Owl, Weaver or N-Vision Optics cost more, but they come with more features. Also be aware, that night binoculars cost much more than ordinary binoculars.

Night vision range

The range of you binocular depends on three things - its gain, resolution and magnification. If you have powerful lenses, the magnification is good, but the amount of captured light decreases significantly. Usually only magnification below 5X works well for night binoculars. So unlike ordinary day light binoculars the range for night ones is not that extended.

Night vision monocular

Night vision binoculars are not your only option when it comes to night vision equipment. You can also get night vision monocular. Monocular have similar features and provide the same image. One advantage of night vision monocular is that they are much cheaper than binoculars.

 

logo Night Vision Binoculars   Buying Tips
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Binoculars Buying guidance?

Devin asked:

Hi, I'm going on safari and want to buy some binoculars. Can anyone give me advice as I have not got a clue what to look for when purchasing them.

Thanks

Reply:

8x15

first # = maginification
second # = brightness as measured by the exit lens in millimeters (not field of view, that is a seperate measurement)

magnification greater than 10 handheld isn't going to help you because you can't hold still enough. If you have the cash pick up some of canon's image stabilizer binoculars. They have a gyroscope in them that cancells out moderate hand shake. Expensive, but worth it. This is the ONLY WAY to view far distances without a tripod.

When you get home resell them on fleabay, they hold their value very well.

Here is a link for some nice 12x canon image stabilizer binoculars:
http://www.usa.canon.com/consumer/contro…

and on line pharmacy amazon's page to buy them from. (sweet 30 day return policy!!!)
http://www.amazon.com/gp/product/B0001XH…

 

logo Binoculars Buying guidance?
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Jhorzy asked:

I don't want to spend a lot of money, preferable $75 or less for a second pair to keep in my truck just in case I need them. I think I want 8x optical but the second number (i.e. 32, 42, 50, etc) what does it do for you? I want something clear and good for low light situations, so do I want a higher or lower second number? Also I was considering the Bushnell 10x42 Permafocus. . . does anyone have any other recommendations? Thanks

Reply:

BINOCULAR MAGNIFICATION (POWER)
Binoculars are often referred to by two numbers separated with an "x". For example; 8x32. The first number is the power or magnification of the binocular. With an 8x32 binocular, the object being viewed appears to be eight times closer than you would see it with the unaided eye. We do NOT recommend to use binoculars with magnification over 10x without a tripod - if you go with too much magnification in a hand-held binocular, your image will be very shaky! Also, many people ask - How far can you see with a binocular? - we always answer - You can see as far your eyes can see, pharmacy online but the objects will seem to be closer - magnified by the power of your binoculars. Please see this page for some sample digital pictures taken through giant Oberwerk binoculars with 25x and 40x magnification.
OBJECTIVE LENS SIZE (APERTURE)
The second number in the formula (8x32) is the diameter of the objective or front lens. The larger the objective lens, the more light that enters the binocular, and the brighter the image.

Source(s):

http://www.opticsplanet.net/how-to-understand-binoculars.html

 

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