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About 50 years later, you get the creation of the roof prism. The roof prism has the advantage of being in line and creates that straight barrel look. The roof prism was more complicated to produce, and the silvered surfaces reduced the amount of transmitted light. With modern coatings, the roof prism can perform on par with the double pro prism, though roof prism binoculars are still more complicated and therefore more expensive. Ask an Expert: Angie Merritt Inside the UpClose G2 are two Porro prisms, reflective optical prisms that the form of a right-angle triangle with two sides of equal length. Porro prisms make binoculars more compact without compromising focal length or the dispersion of the light rays as they pass through it giving the classic “broad-shoulder” shape of a traditional binocular. Our Porro prisms are constructed of BK-7 optical glass, which provide high reflectivity so that more light passes through the optical path to your eye. We can understand your comment about your other pair of binoculars, 30-160×70. These are variable zoom binoculars. This type of binoculars very often delivers a poor image quality and difficulties in focusing. Similar binoculars to your good ones (Nikon 15×80) would be the Celestron high powered models of binoculars. We have quite a few of them on offer. They have good magnification and large lenses like your Nikon’s for brighter images. Will you be using the binoculars on a tripod or handheld? If you need a similar pair to be used for viewing ships and boats at sea but without the use of a tripod we can recommend the Celestron 15×70 binoculars below:
Surprisingly magnification is not too big a deal for large, stargazing models. Seeing as those stars are literally light-years away, you likely won't notice the difference between 10x and 12x. These bins are meant for gathering light and making things brighter rather than bringing them closer. If you really want to feel close to the cosmos, you'll have to go with a telescope (or fill your phone with Neil deGrasse Tyson podcasts). Glossary of Terms binocular is a great choice for those who want a high-powered optic with the ability to see in low-light conditions. With a 12x magnification and 50mm objective lenses, this binocular will let you see your target clearly, even at long range. Variable-speed focus allows rapid turning of the knob to yield coarse adjustment, while slow turning yields fine adjustment. This system works very well but takes time to get used to. The use of two separate focusing knobs, one for coarse and one for fine focusing, can also be used, though uncommon. Compact, mid and full-size options in roof or porro prism from 10x to 20x provide multiple options for your adventures.Whether you are out on the trail or inside a crowded stadium, you want a binocular that is comfortable to hold and use over long periods, without fear of bumps or drops. UpClose G2 features a lightweight and durable armor-protected chassis. Its tough, rigid frame is coated with rubber to stand up to hard use in the field. The UpClose G2 is also water resistant and can repeatedly stand up to unexpected conditions. Knowing your terminology is important, so let's go over a few things you should know. The first thing you're going to see is some numbers like this: 8X42. The first number is the magnification; the second number is the objective lens size. We will talk about these two items first. UpClose G2 is tripod-adaptable, so you can mount it on any standard photographic tripod for extended viewing or digiscoping (photography through the eyepiece). The tripod adapter is sold separately. With the detachable objective lens caps you’ll be able to keep your lenses protected at all times. Plus, the large, smooth focus wheel is easy to turn allowing you to focus on subjects at varying distances even with gloves on. Both binoculars can be used for whale watching from the balcony. The main question is how far away the whales are. If you can see them already without binoculars, i.e. clearly see there are whales out there, and you only need an enhanced view then the Avalon 10×42 will work fine. It has the advantage that you can use these binoculars for other occasions too. But if the whales are often very far away, i.e. over 2 miles out at sea, then the Celestron 20×50 will work much better. Note that they are harder to use due to the stronger magnification but once you are looking at the whale you will defiantly see it in more detail. If your main use for the binoculars is indeed to look at whales and very distant subjects (boats, ships etc.) then the Celestron 20×50 is the right choice.
is a lot brighter than 20x50. Bins with a high ratio of aperture to magnification will always be brighter due to large exit pupil. As well as being brighter, the 10x50 will be a lot easier to hand hold, and offer a wider field of view. Any pair of binoculars can be used to view from any distance. Either close or far. The binoculars automatically adjust the “zoom” so all you normally do is adjust the focus wheel. If using binoculars with low magnification you will be able to enjoy a wider field of view. If using binoculars with high magnification you will see a more narrow view but in more detail. Regarding the binoculars you had, these are called “Zoom Binoculars”. They offer a few levels of magnification. We have a few models of zoom binoculars here on Procular. If you are viewing from a fixed location (bedroom) and looking from about 1 mile then we can recommend the Celestron 20-100×70 SkyMaster binoculars. They are zoom binoculars with 20x to 100x magnification and large 70mm lenses. The large lenses allow you to see in low light which is great for star gazing or looking at the moon. The variable magnification works via a zoom lever – same as the ones you had. Details below: x 70 = very nearly as bright as the 10 x 50, and will show more detail. But only some people will be able to hand hold these due to the high level of magnification and the weight. The first noticeable difference between the 10x42 binoculars and 10x50 binoculars is the size and weight. Due to the increase in objective lens diameter, you can expect the 10x50 binoculars to be bigger in comparison. This results in these binoculars being both taller and wider than any 10x42 binoculars. The second number in the bin world represents the lens diameter of the outer lens; this represents the amount of light let in for a clearer, sharper image. This becomes important at dawn and dusk. If you are just shopping for the best deal and want an inexpensive product, ensure that the second number represents at least five times the magnification: so "40" is most frequently associated with 8x , and "50" is most frequently associated with 10x. This does not mean the second number needs to be even or odd, so go for the "8x43" or "10x54" if you like. What is the most important aspect that you wouldn't compromise when buying a pair of binoculars?
The other terms you might hear connected with binoculars and see on specifications sheets are Porro prism, roof prism and ED glass. As previously mentioned, the larger objective lens size on the 10x50 binoculars allows for them to offer brighter images. Even in low-light conditions you can expect these binoculars to perform exceptionally well. However, this does not necessarily mean that they offer the highest possible quality. This is largely dependent on the model of binoculars and the glass that they use. Another factor that sets quality binoculars apart is lens quality. The best binoculars have glass lenses that are precisely engineered to resist scratches and produce high-quality and clear images. This is usually accomplished through various coatings, which also increase brightness and sharpness. In fact, the field of view is so wide – on the 10×42 it’s 7.6-degrees and the same as older EL 8.5×42 – that you can step up in magnification without the usual pitfalls of doing so. We generally prefer 8x binoculars over 10x or 12x binoculars because, normally, they strike a better balance between magnification and field of view. These binoculars, however, give you the best of both worlds. The 8x NL Pure have an even wider field of view at a frankly unbelievable 9.1-degrees.
Binoculars with a 50mm objective lens are good for long range activities because they allow more light to enter the binoculars, which results in a brighter and clearer image. In summary, then, an 8×42 pair of binoculars magnifies a scene 8x and has 42mm lenses; a 10×25 pair has 10x magnification and 25mm lenses. Should I care about features such as prism types or ED glass? What’s more, you’re not just getting decent optics, but a solid, rubber-armoured build, smooth focusing and a comfortable, lightweight design. Sure, at 900g the Aculons weigh more than most equivalent Roof Prism binoculars, and they do get tiring over prolonged use, but compared to some budget 10 x 50s, they’re well-balanced and easy going. Nikon also bundles a case and a comfy padded strap. They’re exceptionally sharp across a wide 7.6° field of view and no discernible chromatic aberrations. They offer a touch more magnification than a regular 8x binocular, yet they’re not at all difficult to hold steady and close focus is superb: you can peer at subjects from 1.5m. Focusing is incredibly easy on the finger, too. The focus wheel is both light and smooth and super accurate.
These Bostionye binoculars don't feature a compass or rangefinder. Instead, these binoculars include a separate kit designed to work with smartphone cameras. This is especially useful when photographing regattas, events, and sights along the way. The set includes a 5-in-1 lens kit, which makes it easy to zoom in with your iPhone without sacrificing image quality. Read our full Celestron UpClose G2 10x50 review for more details Best for Ruggedness What are the best binoculars? Key specs – 10x magnification; 42mm objective lenses; 7.6° field of view; 18mm eye relief; adjustable cups; 2m close focusing distance; 850g These are roof prism binoculars, waterproof and although they don’t use extra low dispersion glass (ED) like the Nikons, the glass is fully multi-coated to reduce flare and glare. These are also fully waterproof to the extent that they can be submerged in up to 3m of water. Throw in a 30-year warranty and you have a pair of binoculars that are likely to last you a long time.
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