It is often easier to work with simplified fractions. As such, fraction solutions are commonly expressed in their simplified forms. 220 The first multiple they all share is 12, so this is the least common multiple. To complete an addition (or subtraction) problem, multiply the numerators and denominators of each fraction in the problem by whatever value will make the denominators 12, then add the numerators. EX: The term “power 1000% lens” is not a common specification used in the context of binoculars. It is possible that this is a marketing term used by a particular manufacturer to describe the magnification of their binoculars. That’s why the Canon 15×50 IS All-Weather construction is so valued. The bins are protected to meet JIS standards for Grade Four water-resistance.

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It surprises sensible people to realize IS manufacturers often leave their prized electronic and optical equipment open to the elements. Focus Adjustment – The large focus knob is mounted on the center of the bins for convenient access. It turns smoothly and holds settings well. IS Button – Stabilization is activated with a button on the right side. It’s conveniently placed for your finger to hold down, and there’s a 5-minute hold setting for longer sessions. AoV is always expressed in degrees. The higher the number, the wider the area you'll be able to see. Anything over 6 degrees can be considered a good angle of view. Weight – Fans (and marketing literature) describe the 15×50’s as “light” bins, but that’s just a relative notion, since most higher-mag IS bins lean less toward a paperweight and more to a boat anchor. They weigh 41.6 oz, or over 2 1/2 lbs.Again, a higher number simply means you'll have a wider horizontal view through the lenses. Typically you can consider a FoV of about 300 to 375 feet as adequate. Remember though that the higher your magnification, the smaller your field of view will be due to the object being brought closer. HAWKE Dark Green 12 x 50 Nature Trek Waterproof Bak4 Prism Binoculars 529024 Cameras and Photography:Telescopes and Binoculars:Binoculars and Monoculars - HAWKE Dark...

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We will discuss them separately to avoid confusion, and show you how to convert one to the other if needed. The Canon 15x50 IS Binoculars have a field of view of 237ft at 1000 yards (you get about 310 – 340ft from most good 10x roof prism binoculars) No sign of the dreaded 'shimmer' some people complain of (maybe it depends what sort of shakes your hands have got?)Get a nice big aperture if you want to see as many stars as possible, and a smaller aperture if lighter weight and portability are important to you. Beware of magnifications higher than 12x if you don't want too shaky an image without support, while also maintaining a decent field of view. Let’s not go overboard though. This only means it can withstand splashing water: it’s far from submersible. A directed stream can kill them. The Canon 15×50 IS is one of only two All-Weather binoculars in the Canon line-up: the other is the Canon 18×50 IS. These two models are also the highest-powered bins the company produces. The 15x Revolution

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Hello Michael. Appreciate your words. The Pentax 12 x 50’s I have and use with a trigger grip monopod set up, serve me well but as we all do, I was thinking the Canon’s could beat this in “hand held” mode ??!! Maybe ??!!

Canon has updated its lower-magnification bins in recent years, but expectant birders and stargazing fans have been disappointed in their wait for a refreshed 15x model. magnification with image stabilisation is a great combo at 40mm lenses (18x would lose too much light at night for me) The Fuji TECHNO-STABI 14×40 has both water- and fog-proof seals, making them rugged for outdoor use. Many prefer the ergonomics, too. They don’t have the optical quality of Canon’s, though. Unlike adding and subtracting integers such as 2 and 8, fractions require a common denominator to undergo these operations. One method for finding a common denominator involves multiplying the numerators and denominators of all of the fractions involved by the product of the denominators of each fraction. Multiplying all of the denominators ensures that the new denominator is certain to be a multiple of each individual denominator. The numerators also need to be multiplied by the appropriate factors to preserve the value of the fraction as a whole. This is arguably the simplest way to ensure that the fractions have a common denominator. However, in most cases, the solutions to these equations will not appear in simplified form (the provided calculator computes the simplification automatically). Below is an example using this method. a These are much lighter than the Canon 15×50 IS, at only 27.3 vs 41.6 ounces — almost a pound less. Ouch.

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The magnification number on binoculars is expressed as part of a combination of two figures, for example 8x40 or 10x25. There is a surprising amount of Chromatic Aberration, which seems to be evenly across the field I.e. no worst at the edges than the centre. To be honest it is probably only noticeable because the image stabilisation makes the image so clear and it takes a very contrasty object like a pure white car at a distance to see it, it really does not detract at all in normal use, but on bins of this price? Angle of view walks hand in hand with field of view as they refer to the same thing: the amount of horizontal scenery that is visible when looking through the binoculars. If you’re interested in the minimalist approach to stargazing and birding that Canon offers, you might take a look at the other All-Weather bin in their line-up: the Canon 18×50 IS. An alternative method for finding a common denominator is to determine the least common multiple (LCM) for the denominators, then add or subtract the numerators as one would an integer. Using the least common multiple can be more efficient and is more likely to result in a fraction in simplified form. In the example above, the denominators were 4, 6, and 2. The least common multiple is the first shared multiple of these three numbers. Multiples of 2: 2, 4, 6, 8 10, 12Canon uses a Porro prism with anti-reflective Super Spectra Coating in a tightly-calibrated design. Light from the generous 50mm objectives delivers a bright image that earns high praise from stargazers. Magnification of 15x was never quite as popular as lower-powered 7xs, 8xs, and 10xs. Lower sizes naturally have a wider Field of View (FOV) and a brighter image — it’s just physics. My only complaint is that the eye cups are quite wide so for me they sre pressed hard against my nose when using them. Some people have resorted to cutting them for more comfort.