Now that we’ve discussed the 8X42 binoculars, it’s time to tackle the more magnified 10X42 binos. However, if you have particularly unsteady/shaky hands, this may be something worth keeping in mind and her an 8x instrument would make a better choice. Eye relief is the distance from the eyepiece where your eye will achieve a full field of view and clear image. Transmittance & Glass ThicknessHigher magnifications require thicker lenses, which in turn means less light passes through them. 8X= 8 times magnification). Well, one of the main problems with a more “zoomed in” image on a higher power is that it reduces your field of view. In a forest setting where your subject is difficult to spot, this can be a really important factor. Naturally, a higher level of magnification makes it possible to see greater detail in distant objects. With 10X42 binoculars, the exit pupil is 4.2mm. All Rights Reserved. Robert’s obsession with all things optical started early in life, when his optician father would bring home prototypes for Robert to play with. All you have to do to find the bird is get it anywhere in the image. Contact Me | About Best Binoculars | Privacy | Sitemap |    Copyright © 2020 Best Binocular Reviews | Do You Want to Review Binoculars & Write for BBR? The whole purpose of using a binocular that magnifies the image is to provide you with a better view of distant objects. Eye relief Vortex Crossfire vs Diamondback Binoculars: Which is Best? Often, 10X42 binoculars have shorter eye reliefs than 8X42 binoculars. Both sets of binoculars have an exit pupil that is smaller than this, so the image will appear dark. Therefore even though they both collect the same amount of light and the 10x power potentially gives you more image detail, you cannot actually see it. When shopping for a quality set of binoculars, you’re likely to notice that two sizes are commonly used: 8×42 and 10×42. The 10X42 binoculars usually have a smaller field of view. A 10X set of binoculars will let you see your subject as if it’s 10 times closer than it really is. When it comes down to it, there is no perfect set of binoculars. There are many factors that go into choosing a set of binoculars, including the price. Since 10X42 binoculars are more powerful, they’re always the better choice, right? If either of these apply, you might prefer an 8X42 set of binoculars. As the sampling below shows, this is not always the case. They also have a larger field of view, which makes it easier to locate your subject through the lens. This means that when you look through them, you’re seeing less total area, though you’re seeing a more close-up and detailed shot of the area you’re looking at. By the way, if you are in doubt, be sure to first check out What the Numbers Mean on a Binocular. The second set of numbers in binocular sizes is a measurement of the objective lens. For glasses wearers, 16 mm of eye relief is minimal, but it's better to get a binocular with 17 mm to 20 mm of eye relief. As it turns out, 8X42 binoculars have quite a few positive traits to explore before we jump right into the “bigger is better” concept. 8x42 Binoculars For Sale in the UK. Indeed most brands will list their 8x42 and 10x42 models within the same series as having identical size and weights. Magnification is a measure of how many times closer an object appears when viewed through a particular lens. However, when the ambient light level drops, like when operating in a forest, or what you experience just before sunrise or around sunset, the pupils in your eyes expand to allow them to take in more light. My old pair of binos, where Eddie Bauers 10x50. But when it starts to get darker, the larger exit pupil of the 8X42 binoculars will allow for clearer viewing with less light. However, it can also make it harder to find your subject in the first place since you are seeing less total area when viewing through the lens. The field of view is how wide of an area you can see through the lens. If you’re wearing glasses, it’s usually a safer bet to choose 8X42 binoculars since they will normally have more room for eye relief. That is why many people find that they will actually see just as much detail with the lower 8-power magnification. Each person will have their own preferences. Unlike binoculars that have different sized objective lenses (eg 10x42 vs 10x50), the disparity in the size and weight between an 8x42mm and 10x42mm binocular is extremely minimal and really not worth worrying about. This isn’t always true, but it usually is. This can make it much easier to actually find your target! I recently completed an article where I discussed the main differences between 10x42 vs 10x50 binoculars which I got a lot of positive feedback from. It lets you wrap your fingers around each barrel. Thus under these conditions, it is often impossible to notice a difference in brightness between the views of equal quality 8x42 and 10x42 binoculars. This means that objects won’t appear quite as close to you with an 8X lens as they would through a 10X lens. matters only to people who wear glasses. Well, not so fast. Many expert birdwatchers insist that they see just as much detail, or even more, with an 8-power binocular as they do with a 10-power. But notice that more of the scene is in the left picture. Both Binoculars have the same magnification i.e. By the end of this article, you should know exactly which size will be the best fit for your purposes. Before we start dissecting the differences between these two binocular sizes, it’s important that you understand the terminology used to describe them. This can be a major advantage when you’re viewing far off subjects or even closer subjects that are very small. Thus a 10x42 binocular will best suit those who mostly operate during the day in wide-open spaces, so for example in fields, out on the hills, along a lakefront or at the coast. As the sampling below shows, this is not always the case. However, the 8X42 binoculars have a larger exit pupil, so the image will appear brighter in low light than the same image from a set of 10X42 binoculars. Likewise, for birding and wildlife observation at close to mid-distances, a lower 8x power with a wider view makes it much easier to quickly locate and then follow your subject. Ease of UseA larger exit pupil/shaft of light exiting the binocular is also easier for you to line your eyes up with and thus the 8x42 configuration is more forgiving making it easier to achieve an image without black rings on the edges of the view. Nowadays, Robert is dedicated to helping others find the right optics for their needs. As both 10x42 and 8x42 binoculars have 42mm objective lenses and assuming they use the same quality glass and coatings, the light-gathering ability between the two will be the same. The Talon 8x42 binocular, from Vortex Optics, offers an open bridge design. Therefore, you can often purchase a higher-quality set of 8X42 binoculars for a similar price as a lower-quality set of 10X42 binoculars. In a perfect world, you could pick a set of binoculars based solely on their performance. As I have said many times and is most certainly the case when choosing between 8x42 or 10x42 binoculars: There is no single best option, rather it boils down to selecting the right choice for your particular requirements: With its wider view, an 8x42 binocular is best at shorter to mid-distances, especially if you need to follow small, fast or erratic moving objects like birds or other smaller mammals. Though you might see more close-up detail with stronger magnification, the flip-side is that you’ll get less of the big picture. But as I say the amount is really not worth considering as a factor in making your choice between the two. 8x42 or 10x42 Binoculars: Which is Best for Novice / Older Child? Let’s take a closer look at each. Size-wise they will be the same as they will almost certainly use the same body, however, a 10x42 is often a fraction heavier than an 8x42 as they need slightly thicker glass to create the higher power. However, I have also had a lot of people asking me to compare other configurations against each other and so I have decided to create a series on this, beginning with the one I get asked the most to compare: 8x42 vs 10x42 binoculars and which is best for different uses and users. But keep in mind, the closer viewing means that every movement of your hands will have more of an effect on the image, making it more difficult to keep steady for viewing. So it stands to reason that most people will assume that the more powerful a binocular is, the better. Now I realize that this will be a huge upgrade in quality but I nervous the jump from 10x50 to 8x42 may be too noticable (in a negative way). 8x42 or 10x42 Binoculars: Which is Best for Novice / Older Child? Most of the time, lower magnification binoculars will have a larger field of view. Plus, you can usually find them for a better price than their higher-magnification siblings. Before we discuss what the differences between 8×42 binoculars and 10×42 binoculars are, we should first cover some of our terms so that it’s clear what we’re discussing. Here are the ways that an 8-power binocular can give you more than a 10-power binocular. Having recently completed testing and reviewing the excellent Kite Lynx HD+ 10x50 binoculars, it reminded me how for some uses, this configuration makes the ideal solution and how for some users it can certainly make a better choice than the more commonly selected 10x42 combination.. Whilst this difference in transmittance between equal quality 10x42 vs 8x42 binoculars is minimal it only really becomes a factor under more extreme low light situations. More info on all of this can be found in my complete guide to the Exit Pupil. So if we use a sporting event like baseball, cricket or football as an example. But if that's you, you'll want to pay special attention to the eye relief, especially when considering a 10-power binocular. During these low-light times, your pupils dilate to allow more of the now scarce light in. However, even though both 8x and 10x 42mm binoculars are able to capture the same amount of light, they will have different capabilities in terms of the image brightness: Exit Pupil SizeThis difference between the two can largely be explained by the relationship between the size of the pupils in your eyes and the size of the shafts of light exiting the ocular lenses (exit pupil) of the binocular: In good to average light conditions, most people’s pupils will constrict to a size smaller or at least equal to 4mm and thus both an 8x42 and a 10x42 binocular will be supplying your eyes with more than enough light for you to work with and thus perceive a bright image. How to Hold Binoculars Steady: Tips & Tricks, a good, general purpose pair of binoculars. In most binocular models, the eye relief is greater on the 8x42 version than on the 10x42 version or the 8x32 version is there is one. If you wear glasses, you’ll need to pay attention to the eye relief and make sure that any 10X42 binoculars you choose have 16mm of eye relief as a bare minimum.