Binoculars

Showing posts with label Lens. 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.

How Binoculars Work

Sphere: Related Content

If you understand how telescopes work, then you understand how binoculars work. Binoculars are, after all, nothing more than two telescopes attached to each other.

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.

InfraRed Binoculars - What Are They And How To Buy Them?

Sphere: Related Content

InfraRed binoculars (also called IR binoculars and night vision binoculars) are binoculars that provide you to see in the dark and trough the fog. Normal binoculars can't do that, but thanks to modern technology, InfraRed devices are already built in binoculars. Many people nowadays need infrared binoculars - birdwatchers, cave explorers, security and military personnel.

InfraRed binoculars give a wonderful chance for birdwatchers to discover the nature at night. For example night birds or animals like owls, how will you be able to see them, without special night vision equipment? InfraRed binoculars are more expensive than regular ones. InfraRed (which means under red) means that any device with an infrared "detector" can "detect" "invisible warming", which means almost every object that we can find in nature is relatively warm, but we can't see that, thanks to infrared binoculars this is now possible. Almost every object makes an infrared radiation, and thanks to these "detectors" we can see these so called "hot spots" so "detectors" can find them, and make an image which is possible for a human eye to see. And thanks to infrared devices, doctors can find hidden tumors in the body, biologists can even find diseased vegetation in a forest and engineers can find leaks in mainstream heating systems.

When buying InfraRed binoculars, please, read all the features that specific binoculars provide. Maybe you are overpaying, by paying for the features which you don't need or you will not use. But then again, don't try to cut the price off too much, almost every time price reduction means - reduction in quality. Another thing to keep in mind before buying, is to make sure, that it will have all the additional features which you need, for example waterproof if you will use them near water, sealed if you will use them in caves or in dusty terrain and so on. InfraRed binoculars are also great, that human eyes don't need to adjust the dark, the special lens which is in the binoculars does that. If you will try to adjust your eyes to see in dark for a longer period, it could damage your eyesight, so by using InfraRed binoculars your eyes will not have any pressure at all. The beam that is generated by InfraRed will cause reflection of all near objects and then come back to the lenses of the binoculars. The lens will make an light beam, so our eyes can see, and this way there is no pressure to be made by our eyes.

Infrared binoculars are truly worth it's price, even if they are more expensive than "regular" binoculars. If you need night vision binoculars, then InfraRed binoculars are probably one of the best options. They also have their minuses, the range and field of view will be reduced, the range will be that far, how far are the "hot spots", if there will be no warm objects, then the vision of infrared ends there.

For more binocular reviews, tips and tricks visit http://www.best-binocular-reviews.com. We provide reviews for most of the binocular brands and types, and of course we give an honest opinion/review about each type and model ! Don't hesitate and visit http://www.best-binocular-reviews.com

Article Source: http://EzineArticles.com/?expert=Chris_Eisters