Showing posts with label Glasses. Show all posts
Showing posts with label Glasses. Show all posts
Canon Binoculars Figure - The Best Of Canon 18x50 Image Stabilization Binocular
The 18x50 Image Stabilized binoculars feature a shock-resistant, water resistant rubber coating for a nonslip grip, better durability, good handling, and for protection against rain & splashing water. You don't have to worry about the optics misting up if you get caught in the rain and still need to view. These binoculars render high-magnification and wide-field viewing. Controls for focusing and image stabilization are centrally placed and accessible by both hands. These binoculars provide long eye relief for added comfort and allows the use of eyeglasses without vignetting of the image.
What is an Image Stabilizer?
The more powerful the binoculars, the more shakings are magnified. As a result, even a little sway of your hands will shake the image in the binoculars a great deal. Usually, we can bear this image shake with binoculars up to 7x magnification. The image shake would quickly get unbearable With higher-magnification binoculars.
However, with Canon's Image Stabilizer turned on, the image shake becomes tolerable even at magnifications of 15x and 18x. Such high magnifications were previously unthinkable in a pair of binoculars without the use of a tripod. TheImage Stabilizer steadies the image instantly and brings out the top-notch optical performance of the lenses.
Image Stabilization and More
Canon's IS technology is outstandingly good at eliminating the sway problem and is widely applied by the television industry with Canon's professional broadcast quality video recording equipment. An exceptional VAP (Vari-Angle Prism) corrective IS system sits within the objective lens group and the porro prism on each side of the binoculars. Within one-thousandths of a second of the binoculars being moved from their optical axis by vibrations, a detection system activates the IS mechanism. The VAP shape modifies to refract or 'bend' the light path by exactly the right amount, thus fully compensating for the vibration.
Super Spectra Coating
A number of optical elements affect the brightness of an image, including the total of incidental light that is reflected by the lens. An uncoated lens will reflect away as much as 8% of the incidental light, significantly dimming the image. Canon's Super Spectra Coating prevents that reflection.
What do the numbers mean?
8x25? 15x50? The two numbers used to describe any pair of binoculars are their magnification — 8x, 12x, 15x and so on — and the diameter of their objective lenses — 25mm, 36mm, 50mm, and so on. The larger the first number is, the larger the object will appear in the objective lens. To illustrate, if you use a 10x lens and view at an object that is 200 yards away, it looks to be the same size as an object placed just 20 yards away. The second number, the size of the objective lens, is crucial because the larger the objective lens, the more light it can accept for brighter, more detailed images, and the better suited they will be for low light situations.
Author Resource:
Reagan Senoron is an expert author about Technology and Product Review articles.If you want to learn more about Canon binoculars figure and want a video demo, please visit the link. You can find consumer electronics supplies there too.
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How Binoculars Work
Binoculars are essentially a series of mirrors and prisms made of glass that take incoming light and provide the viewer with a magnified image. Each half of the binocular has three major parts.
The lenses at the front of the binoculars, the largest lenses, are called the Objective Lenses. The Objective Lens is where all the light comes into the binoculars. The Objective Lens focuses the light coming into the binoculars, and projects the image it receives as an upside-down image into the binoculars. In this way, the Objective Lens is a refracting lens. The larger the Objective Lens, the brighter the final image will be since it can take in more light. The trade off, however, is in convenience, as a larger Objective Lens will result in larger and heavier binoculars. Of course, higher quality lenses can be brighter than cheaper Objective Lenses of any size. Indeed, to ensure that the Objective Lens projects the sharpest image possible, it is important to use a high quality lens. With lower quality lenses, not all the light will be refracted at the same angle, causing the final image to be distorted in shape and color.
The image is turned the right way up by the second major part, the prism. In the common Porro design, the image is turned the right way up by two prisms set at right angles to each other. This is what accounts for the traditional binocular shape. For more money, you can get binoculars with a roof prism setting that allows for a more streamlined design. No matter what layout the prisms use, the final result is always the same. The prisms then project the corrected image down the binoculars towards the last major component.
The third major part of the binoculars is the eyepiece lenses. These lenses fulfill the binoculars' main purpose of magnifying images. The eyepiece lenses then project the magnified, right way up image to the viewer's eyes. It is important to consider this last step, from the eyepiece lenses to the viewer's eyes. Every pair of binoculars has a different eye relief, or optimum distance between the viewer's eyes and the eyepiece lenses. In particular, if you wear glasses, you should look for binoculars that have a long eye relief. So, now that you know how binoculars work, get out there and try some!
Article Source: http://www.articlenorth.com
Byran Kempa for Binocular Source - A site with news and articles on binoculars such as breaker cobra binoculars.
Night Vision Binoculars Are Truly Amazing Pieces Of Technology
The Applications
You can use night vision binoculars whenever you need to see something far away in very little light. This makes them useful for hunting, playing war games with your friends, of course military operations, and also for security reasons. These are just a few of the ways people utilize night vision binoculars. You'll be amazed at how far and by how much you can see when you raise your night vision binoculars to your eyes.
How They Work
Night vision binoculars, while they allow you to see in the dark, don't allow you to see as if the sun was shining overhead. Instead, when you look through the eye pieces of your night vision binoculars, you'll see the landscaped bathed in a green glow. While you may not be able to see as accurately as if the sun was out, they will still give you a great view of your surroundings. Some models of night vision binoculars work better than others so make sure you are checking the reviews to make sure you are getting what you pay for. Some will allow you to merely make out shapes in the dark while others will allow you to see much more clearly.
Where To Get Them
To find a pair of night vision binoculars, you should be able to find them online. You can also find them at Army surplus stores where you can find all sorts of cool military grade gear that the general public normally wouldn't be able to get. Once you get your pair of night vision binoculars, you won't be able to wait until the sun goes down to actually use them. No longer will the night time be a hindrance to your site. You'll be able to see no matter how much light there is.
What The Heck Is A Waterproof Monocular?
What Are The Advantages?
A waterproof monocular is not for everybody, but for many people, they have several advantages over waterproof binoculars. First off, there is only one lens to pay for instead of two. In this way, even some makes of waterproof night vision monoculars can be far less expensive than a pair of waterproof binoculars. They also tend to be lighter and easier to carry.
In a lot of instances where you need to constantly refocus from far away to where you are now, the use of binoculars can be too disorientating. If you are hunting legally or hunting for illegal hunters, for example, you need to constantly be aware of what's around you as well as where your prey is. Other uses for a waterproof monocular include home or business surveillance, sports, fishing, snorkeling or running from folks who caught you spying on them as they were sunbathing in the nude.
Some people also have a visual problem that makes the use of binoculars not only difficult, but very painful. These people have a kind of vision problem called monocular vision, which means that they can only look out through one eye at a time, instead of through both eyes at once like the majority of people.
This writer has monocular vision. So, whenever I look through a pair of binoculars, I see two separate images. This strains my eyes and gives me a very painful migraine. But, with the use of a waterproof monocular, my eyes and head are less strained. I can then go through my various spying shenanigans without having to worry about triggering an optical migraine.
If you don’t have monocular vision, but have the boring old binocular vision, then you may need to shut one eye in order to not feel unbalanced when seeing two separate images at the same time. You can find a waterproof monocular in sporting goods stores, boating supplies, camping shops, some camera supply shops and their online equivalents.
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