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Read more about Best Night Vision Scopes – Reviews 2017 – 2018 on Best Binoculars. via Blogger Best Night Vision Scopes – Reviews 2017 – 2018 Read more about Best Binocular & Monocular Tripods – Reviews 2017 – 2018 on Best Binoculars. via Blogger Best Binocular & Monocular Tripods – Reviews 2017 – 2018 Read more about Best Compact Travel Binoculars – Reviews 2017 – 2018 on Best Binoculars. via Blogger Best Compact Travel Binoculars – Reviews 2017 – 2018 Read more about Best Binoculars With A Built In Camera – Reviews 2017 – 2018 on Best Binoculars. via Blogger Best Binoculars With A Built In Camera – Reviews 2017 – 2018 Read more about Best Children’s Binoculars – Reviews 2017 – 2018 on Best Binoculars. via Blogger Best Children’s Binoculars – Reviews 2017 – 2018 The History Of The BinocularsHave you ever wondered when binoculars were invented? You would assume that they were created around the same time as the telescope, but parts of the binocular were actually being made as early as the 1200’s. The history of binoculars is not as short as you may think because, whilst the idea has been around for a long time, certain inventions needed to be made before the binoculars were able to give you properly orientated images. Read on to find out about the history of binoculars! LensesIn 1267 a friar called Roger Bacon wrote about his solution to the problem of focusing the eyes on close objects, i.e. the short-sightedness which tends to develop with age. He recommended that sections of glass could be placed on pages of writing to magnify their content, and by the end of the 1200’s craftsmen were already making thin glass sections which would be put into frames so people could wear them in front of their eyes, i.e. the first glasses. As these reading glasses were similar in shape to lentils, they became known as lenses because the word lens is Latin for lentil. The Invention Of BinocularsBinoculars were actually built in 1608 by a man called Hans Lippershey in the Netherlands. He created a convex lens and a concave lens which, when combined, could magnify the image of distant objects. He showed his binoculars to the Assembly of the States-General of the Netherlands and they asked that he create a similar object with two lenses as it would be easier for use in battle. He did indeed create these binoculars, but they had poor resolution and bad magnification and so they didn’t become particularly popular. Lippershey wanted to patent his invention, but he was refused. The origins of the binoculars may actually go back before Lippershey because around that time you could already buy small spyglasses with a similar design. During the 17th/18th century, a few inventors had a go at creating smaller telescopes or two piece box telescopes, i.e. binoculars, but they were all pretty bad quality and we don’t know much about them. GalileoGalileo may have actually stolen Lippershey’s idea because just one year later in 1609 Galileo started the process of building a telescope. He eventually created around one hundred telescopes which could magnify up to thirty times, and with these telescopes he was able to observe far away objects including the Moon, Jupiter’s satellites and his invention has lived on ever since. Galileo’s telescopes were pretty basic by today’s standards. He only used lenses which were curved on one side and his creations have a very small field of view. Opera GlassesThe development of binoculars doesn’t seem to have progressed very much until the 1820’s when binocular ‘theatre glasses’ started to become popular. These glasses were based on Galileo’s design, and even though the magnification wasn’t particularly powerful at all it wasn’t really a problem if the spectators only wanted to magnify a nearby stage. Later on, in the nineteenth century similar binoculars are known as ‘field glasses’ started to be developed. These binoculars were very similar, but they have a slightly higher magnification. PorroIgnazio Porro is sometimes thought of as the inventor of the binocular because he received a patent in 1854 for his prism system, and without that prism system binoculars may never have become popular. Porro prisms were created for a variety of optical instruments with the goal of orientating images so they were correct. They normally work as part of a double porto prism system which will reflect the light four times in total. The prism is made up of right angles, and when the light enters the large rectangular face of the prism it will internally reflect twice so the image has now turned 180 degrees. There is normally a second prism rotated at 90 degrees and it is there to ensure that the light will go through both prisms. Porro’s prism design is still widely used today. Prisms are necessary for binoculars because without them any images that you see through the binoculars will be upside down and backward! Prisms have a mirror like an effect which reflects the light back and orientates the images so they are the right way up. Ernst Abbe & Carl ZeissCarl Zeiss had been working on building better microscopes since the 1840s Zeiss ran an optics workshop and in 1866 that workshop had sold over 1,000 microscopes. In 1866 he paired up with fellow inventor Ernst Abbe and along with Otto Schott, they worked on improving lenses for multiple optical instruments including microscopes. Ernst Abbe is the same Abbe of the Abbe-Koenig prism. Their prism is a roof prism and it is basically designed to invert the image so it is no longer upside down. The prism is composed of two glass prisms which are cemented together in a shallow V shape. The light will enter one side of the prism, it internally reflects 30 degrees, it is then reflected from the roof section of the binocular, and it is reflected again at 30 degrees on the opposite face of the prism. Roof prisms have been around since the late 1800s, but they only started to become popular on the market almost a hundred years ago in the 1980s. ConclusionThe idea for the binocular is as old as Galileo, but it was only around 200 years later that the idea actually began to take off. Binoculars are very handy because you can look through them with both eyes at once which means you are not distracted by your other eye and you get a sense of depth, so it’s actually surprising they weren’t invented earlier. Prisms are pretty much essential for binoculars because, whilst it may not matter if the moon, planet or star that you are looking at is upside down, it will probably matter if you are trying to watch live sports at a stadium or if you’re trying to take a closer look at the local (or not so local) wildlife. Read more about When Were Binoculars Invented? on Best Binoculars. via Blogger When Were Binoculars Invented? The ScienceThe refraction of light is key to how binoculars work because it explains how lenses work. Refraction is The way light bends when it goes from the air to a different material. Placing a stick in water is a refraction of light because the stick appears bent, however it is not. A lens is a curved piece of glass and when light rays hit a piece of glass such as a lens, they slow down and bend. If the lens curves, so its outside is thinner than its middle, it’s called a convex lens. As light rays enter a convex lens, they bend in toward the middle—as though the lens is sucking them in. That means a convex lens brings distant light rays into a focus. It’s also called a converging lens because it makes light rays come together (converge). Looking at things through a convex lenses makes them appear bigger—so convex lenses are used in things like magnifying glasses. A different kind of lens curves the opposite way, with the middle being thinner than the outside is. This is called a concave lens. (You can remember this easily if you think that a concave lens caves in in the middle.) A concave lens makes light rays spread out like the lines of a firework. Imagine light rays coming into a concave lens and then shooting out in all directions. That’s why a concave lens is sometimes called a diverging lens. It makes light rays shoot out (diverge). Concave lenses are used in movie projectors to make light from the film spread out and cover a bigger area when it hits the wall. But, Binoculars?Okay, so hopefully you can see where we’re heading. If you want to see something in the distance, you can use two convex lenses, placed one in front of the other. The first lens catches light rays from the distant object and makes a focused image a short distance behind the lens. This lens is called the objective, because it’s nearest to the object you’re looking at. The second lens picks up that image and magnifies it, just like a magnifying glass magnifies an image on paper. If you put the two lenses in a closed tube, hey presto, you have a telescope. You can make your own telescope easily enough with a couple of magnifying glasses and a cardboard tube wrapped around them. Binoculars are basically just two telescopes in one device, but when light rays pass through a convex lens from a distance they cross over. Hence why far away things often look upside down when looking at them through a magnifying glass. So binoculars have a pair of prisms (big wedges of glass) inside them to rotate the image through 180 degrees. One prism rotates the image through 90 degrees (flips it onto its side), then the next prism rotates it through another 90 degrees (flips it onto its side again), so the two prisms effectively turn it upside down. The prisms can either be arranged in a back-to-back arrangement (known as roof prisms) or at 90 degrees (known as Porro prisms) The prisms explain why binoculars are heavy and why they are sometimes quite chunky in the middle. Field glasses, which are compact binoculars like the ones shown in the photo here, flip the incoming images using only lenses. There are no prisms, so field glasses are smaller, lighter and more compact—but the image quality is poorer. Is this becoming any clearer? Less Complicated Break DownNo? Okay so basically the 2 lenses you look through in a pair of Binoculars refract the light in certain ways to capture images from far away to be clearer than they really are. Like glasses lenses help you see things differently, so do Binoculars.
Read more about How Do Binoculars Work? on Best Binoculars. via Blogger How Do Binoculars Work? Top 3 Binoculars On The Market For Under £300
When it comes to buying binoculars, there are more than a few options to choose from. However, if you know where to look, you can find a great option with high quality features at any price range. Here, we will look at the top 3 binoculars under £300. Despite the low price, many of these models offer a professional level experience. Let’s see what each one is capable of.
Sunagor BCF Mega Zoom Review – Our Number 1As the name might suggest, the Sunagor BCF Mega Zoom binoculars are built around offering a clear image with some very high magnification levels. Yet that isn’t all this device offers, as it actually features a robust, all-round design. It’s other unique properties include:
As you can see, there are a lot of practical inclusions that make this a very competitive item. While it has some great zoom qualities, the ability to scale back down to 30x means that it’s own unique features don’t become a problem when you want to view something a little closer. It’s well thought out strategies like this that make the Mega Zoom a great choice. Summary Features: 30-160×70 – 24.9 x 19.8 x 7.9cm – 1.4kg – Full Zoom Lever – Case – Neck Strap – Lens Covers – Cleaning Cloth – Tripod Adaptor Pricing: High-End Sunagor 30-160×70 BCF Mega Zoom Binoculars with Case Price: £249.99 (43 customer reviews) 2 used & new available from £249.99
Nikon Travelite Ex Review – Number 2The Nikon Travelite Ex is designed to offer a simple, compact option that is easy to carry, yet offers the detail and sophistication you would expect from a luxury, standard model. Let’s look at its best features.
These are a great pair of binoculars, and the offer some fantastic features in a small, lightweight design. With extra practicality, such as the fog and waterproof features, included, this product has considered a variety of possibilities, making them useful in various situations. Summary Features: 9×25 – 10.1 x 11.6cm – 358g – Waterproof – Fog Free – Case – Neck Strap Pricing: Affordable Nikon 9X25 Travelite Ex Binoculars Price: £103.02 (19 customer reviews) 4 used & new available from £102.99
Celestron Skymaster Review – Number 3The Celestron Skymaster binoculars offer a great level of magnification, combined with some extraordinary light conditions. Great for both day and night, these binoculars are fantastic for people who want to view vast landscapes and still pick out all the relevant details.
There are many features here, but its the large lens that will appeal to most users. Being able to use this device in a low light setting, where many other binoculars may fail, is one of the product’s biggest features. Summary Features: 20×80 – 30.5 x 17.8 x 40.6cm – 2.7kg – Tripod Adaptor – Case – Neck Strap – Lens Covers Pricing: Affordable Celestron Skymaster 20 X 80 Binoculars Price: £99.00 (645 customer reviews) 7 used & new available from £90.09
VerdictFrom this list, it’s clear that you can get the perfect pair of binoculars for under £300, without having to sacrifice quality or efficiency. Yet, when comparing the options in more detail, it’s impossible to argue with the Sunagor BCF Mega Zoom binoculars. This device offers so many unique features, including being able to change the zoom level, that it has earned the top position on this list. Sunagor 30-160×70 BCF Mega Zoom Binoculars with Case Price: £249.99 (43 customer reviews) 2 used & new available from £249.99 Read more about Best Binoculars Under £300 – Reviews Of 2015 – 2016 on Best Binoculars. via Blogger Best Binoculars Under £300 – Reviews Of 2015 – 2016 Top 3 10×50 Binoculars On The Market 2016
When it comes to getting the best binoculars, both amateurs and professionals find that 10×50 options are one of the best combinations around. At 50mm, the lens diameter ensures a vast amount of natural light and greatly improves the quality and clarity of any image as a result. Likewise, the 10 x magnification ensures great detail over vast distances. If you’re looking for such a device to improve your own experiences, there are some fantastic options available. Let’s look at the top 3 10×50 binoculars and see what they’re capable of.
Nikon Prostaff 5 Review – Our Number 1The Nikon Prostaff 5 Binocular aims to offer a transportable device that’s easy to use but offers the high level of visual quality you would expect. Looking at its specifications, it’s easy to see how it has achieved this. It’s great features include:
In short, this is a fantastic device suitable for a variety of uses. Aside from its clear visual quality, the practical features make it useful in a variety of circumstances, ensuring it is the only pair of binoculars you will need. Summary Features: 10×50 – 18.7 x 14 x 6.5cm – 816g – Waterproof – Fog Proof – Carrying Case – Front Lens Caps – Rear Lens Caps – Neck Strap Pricing: Mid-Range Nikon Prostaff 5 10×50 Binocular Price: £194.23 (6 customer reviews) 8 used & new available from £175.00
Hawke Endurance ED Review – Number 2The Hawke Endurance ED Binocular model is designed to be a robust and practical option. It’s lightweight design makes carrying the equipment simple, yet it is still ergonomic and comfortable to use. Let’s look at its most unique properties.
As you can see, this is a very practical device, and some great care has been taken to ensure that it offers everything you could want. Quick and easy to use, this device will feel very familiar very quickly, which is always a good sign of a quality product. Summary Features: 10×50 – 794g – Waterproof – Fog Proof – Carrying Case – Neck Strap – Lens Caps – Lens Cloths Pricing: Mid-Range Hawke Endurance ED 10×50 Binocular – Green Price: £209.99 (16 customer reviews) 4 used & new available from £209.99 Eschenbach Arena D Plus B Binoculars – Number 3Another standard option, the Eschenback Arena D Plus B Binoculars offers a robust design with plenty of practicality. It’s noteworthy features include:
This is one of the bigger options available, but it’s great design and comfortable grip make use of the extra space. Aside from this, you get a complete kit with many practical features, such as being waterproof, that you would expect from a device of this calibre. Summary Features: 10×50 – 20.3 x 8.9 x 17.8cm – 907g – Carrying Case – Strap – Waterproof – Fog Proof – Lens Caps Pricing: Affordable Eschenbach Arena D Plus 10×50 B Binoculars Price: £139.00 (10 customer reviews) 4 used & new available from £139.00
VerdictAs you can see, there are some fantastic options for anyone interested in binoculars of the 10×50 variety. However, even among the very best options, few models stand out as much as the Nikon Prostaff 5 Binocular. This device offers great value for money, striving to offer a lightweight, portable design that doesn’t cut out on any of the features you would expect from luxury binoculars. Nikon Prostaff 5 10×50 Binocular Price: £194.23 (6 customer reviews) 8 used & new available from £175.00 Read more about Best 10×50 Binoculars – Reviews Of 2015 – 2016 on Best Binoculars. via Blogger Best 10×50 Binoculars – Reviews Of 2015 – 2016 |
Patrick Ellis
I love nature and I love the wildlife. It is because of this passion, I always like to have my binoculars by my side. They are a great tool for seeing what I love in great detail. A good paid of binoculars are priceless as they can not only last a lifetime, but also give you a lifetimes' worth of amazing sights. ArchivesCategories |