Showing posts with label Photographic lens. Show all posts
Showing posts with label Photographic lens. Show all posts

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.

Reblog this post [with Zemanta]

The Best Bird Watching Binoculars For Weekend Watchers

Sphere: Related Content
If you love birds, you will want to invest in the best hunting binoculars for your bird watching adventures. This will let you get close up views of all your favorite species. And bird watching isn’t just for boy scouts and elderly ladies—anyone can enjoy bird watching activities with the best bird watching binoculars on the market today. It’s a small investment in a lifetime hobby that will give you years of enjoyment.

The Best Bird Watching Binoculars

If you want a pair of bird watching binoculars that will provide you with all the features you need in order to enjoy this hobby, you will want to look on the luxury end of the spectrum. The Zeiss Victory T*FL 8x42 are the best bird watching binoculars on the market, but for about $1800, they are not for everyone. If you love bird watching enough to spend more than a thousand bucks, you won’t want to put your money down for anything else than a Zeiss.

The Features

There are many features to the best bird watching binoculars from Zeiss. The Zeiss Victory features great performance, comfort and durability. You will have sharp, clear images that are bright and accurate. Wit the fluorite prism glass it will be like you are looking at the real thing, right in front of your face. You will also able to work with a range of 405 feet. This is an excellent view for those who want the best bird watching binoculars to experience all of the native birds of the area. You may be able to see other birds you might not have seen before with these.

When it comes to durability, the Victory can withstand a lot of harsh elements. This model is fog proof, waterproof and guaranteed for life if damaged. This is good considering the initial price you may have to pay for them.

And according to customer reviews, the Victory is the most comfortable pair of the best bird watching binoculars on the market today. When you use them, you feel like they have become a part of your face. They also only weigh 27.3 ounces, so they are not too heavy to carry around.

Overall, these high-end binoculars are the best bird watching binoculars that you can buy. So why don’t you check them out? The serious bird watcher will cherish a pair of binoculars like the Victory.
Reblog this post [with Zemanta]

The Top Binoculars On The Market Today

Sphere: Related Content
There are many different brands of binoculars on the market today, but if you are looking for a quality piece of equipment to use for hunting, bird watching or other outdoor activities, you will want to invest your money in some of the best brands and models on the market.

Zeiss Victory T*FL Series

Zeiss is the number one name in top binoculars. While this series ranges from $1700 to $1900, you will find that all of the best features will come standard. You will get high edge sharpness and resolution with the multi-coatings, Abbe-Koenig prisms and fluorite element objective lenses. The objective lenses in this series also eliminate color fringing, even with low light. This series is waterproof, lightweight and features retractable eyecups for maximum comfort. If you want top binoculars, you will want to invest in Zeiss.

Swarovski EL Series

The Swarovski series is another great name if you are in the market for top binoculars. Not only are they lightweight and waterproof, but they also feature a unique design that lets you have a wrap around grip, so you can easily use these binoculars with one hand. There is a superior optical performance with this series, even in low light condition, and you will find that rapid focusing is easy with the large grooved wheel. Gloves will be no problem with this set of binoculars. With this set of top binoculars, you will also get a warranty for any damage that may incur while you are using them. This series is priced around $1700 to $1900, so it is a serious investment. But it is well worth the price if you want to get some of the top binoculars on the market.

Leica Ultravid Series

This series is the most expensive when it comes to the best bird watching binoculars, but you will find that the range is wide, so you can find any type of binoculars that suite your budget. The series ranges from $700 to $2100. If you shop online, you will be able to get a good deal on some of these models. All of these models have the functions, mechanics and optical standards to cal themselves the top binoculars on the market today. There is a powerful 32 mm model that will let you see great distances and close focus as low as 2.10 m. The Leica brand redefines the standard for top binoculars, so you will want to check these out.
Reblog this post [with Zemanta]