inches = centimeters / 2.54 Using our centimeters to inches converter you can get answers to questions like: These Discovery binoculars do have this function, but it is accomplished by turning the right eyepiece, which is a little different to most that have a separate adjustment ring. Either way, I found the diopter to work well enough and the ±3 adjustment range is pretty good for an instrument in this class. As the simple eyecups are not really adjustable, there is not a lot you can do other than for them completely down or use them at the maximum setting. They have used BK-7 glass as the prism material. At this price point, BK-7 prisms are quite common, but due to them having a lower refractive index, they have a lower transmittance level and thus the image tends to be less bright and not quite as sharp around the edges as those that are made from BaK-4 glass which is generally the preferred option. Optical Coatings

These EagleView Zooms come with a fairly disappointing 13mm of eye-relief, which may be something to keep in mind if you want to use your optics whilst wearing glasses. Ideally and to be sure that you have enough distance to play with to enable you to see the full field of view without any vignetting when using your glasses most experts recommend that you should look for binoculars that have an eye relief of about 16mm or more. In most cases an eye relief of 14 to 15mm is adequate for most people who wear eyeglasses to be comfortable, so 13mm is a little on the short side. Most non-eyeglass wearers will just use the eyecups in the fully extended position.If you’re looking to add a bit of texture to the interior of your property while maintaining a neutral and sophisticated colour scheme, Bumpy White wall tiles are ideal. Delivery charges vary for the following postcodes and will be delivered between 5-7 working days to the following postcodes: GY, HS, IM, IV41,IV30, IV42, IV44 – 49, IV55, IV56, JE, KA27 – 29, KW1 – 14, KW15 – 17, PA21 – 38, PA20, PA40+, PH9, PH15 – 20, PH32 – 44, PH49, PH50, TR21 – 25, ZE. To minimize reflection on the lens surfaces and ensure clear, sharp images, anti-reflective coatings are often applied. These anti-reflection coatings are very important as part of the light that passes through any lens is reflected by the front (incident light) and rear (exiting light) surfaces. This reduces the amount of light passing through the lens and if this transmittance is very bad, the image you see will be darker than on binoculars that transmit more light. Also, the reflected light may cause ghosting and flaring, affecting image contrast. The lenses on these Nikon EagleView Zooms are multilayer-coated. What this means is that they have received multiple layers of anti-reflective coatings which helps to increase light transmission, for a brighter image and therefore better low light performance. This is good, but it would have been even better if they had been fully-multi coated, which would mean that they had multiple layers of anti-reflective coatings on all air to glass surfaces and not just some of them as these are.

When set to a magnification level of 8x, their field of view is 80m at 100m / 240ft at 1000 yards (4.6°) - which, for a what at this setting effectively an 8x25 binocular is not very good. To put this into context, the Steiner 8.5x26 Wildlife Pro has a FOV of 333ft at 1000 yards and the Kowa 8x25 BD has a FOV of 331ft at 1000 yards and even the Minox 10x25 BV BRW which has a magnification of 10x has a FOV of 290ft at 1000 yards. To see this in action, you can hold these binoculars up at arm's length and look at the eyepiece lenses, where you can clearly see the circle of light in the eyepieces, this represents the exit pupil. As you increase the magnification you can actually see this circle of light in each eyepiece getting smaller and smaller - see my series of photos below that I took to demonstrate this: With their eye-cups fully retracted, they have a length of 11.9cm (4.7in), this increases to 12.4cm (4.9n) when you fully twist out the eyecups. Fully folded, the width of the binocular is 9.2cm (3.6in), fully opened it is 11cm (4.3in). Their height is 6.3cm (2.5in), which once again all on the larger end of the scale for a full compact binocular but nothing excessively so.

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An important thing to consider when looking at the size of a compact binocular is how small they are when they are folded. When you are are looking through them, just how small they are is not that important, but size is far more important when you carrying them around with you. Different designs of compacts fold up in different ways and this can make a big difference is their size. Also included within the box is some basic and generic instructions that covers the entire Discovery Gator series. Also included is the international warranty card that covers these binoculars for 2 years and entitles you to free repair or replacement in any country where a Levenhuk office is located. My sample Discovery Gator 8-20x25 Zoom binoculars came equipped with a protective carry case, wrist strap and cleaning cloth:

The diopter adjustment like most binoculars is a ring located on the right barrel just under the eyecup and is used to correctly set up and focus the binoculars to your particular eyesight and only really needs to be done once when use them for the first time, unless the setting is moved accidentally or you share your binoculars with someone who's setting is not the same as yours. Storage & organisation Furniture Textiles Kitchenware & tableware Kitchens Lighting Decoration Rugs, mats & flooring Beds & mattresses Baby & children Smart home Bathroom products Laundry & cleaning Plants & plant pots Home electronics Home improvement Outdoor living Food & beverages Christmas Shop Shop by room Another downside to them not being fully covered in rubber is that there is more chance of them making a louder sound if something like your watch or more commonly a ring on your finger strikes against them. Rubber armour dampens down the sound and helps to ensure that you don't frighten away easily spooked animals like birds or deer.By opening and closing the central hinge, you can set the eyecups to match the distance between your eyes. On these, they go from a minimum of distance of 5.2cm apart, right up to 7.4cm. Strong Points: I think that on the whole their main feature, the 8-24x zoom works pretty well, which I have to be honest I was rather surprised about. Being able to zoom into something to view it in more detail is nice and the actual zoom adjustment dial is well positioned and it is really simple to adjust without having to remove the binoculars from your face, or even change your grip. In your hands the Nikon EagleViews feel good and I would say that they not only look good but also give off the impression that they are more expensive than they actually are. The image quality and brightness at 8x magnification is also pretty good for a pair of compacts. As to be expected, in good light conditions, there was no real noticeable difference in image brightness between these and a couple of other lower costing 8x and 10x compacts that I have with me that I compared them against when I had the magnification adjusted to the lower levels. Indeed good light, you only really notice the drop off in image brightness once you get close to the maximum magnification settings.

At 16x Magnification:When you increase their magnification to 16x their Exit Pupil reduces to 1.56 (25/16) which means that even less light will be getting to your eyes. Due to insurance and health and safety regulations we are unable to transport goods into a Customer’s property Comparing a low cost binocular like these with other binoculars that are far more expensive may seem a little unfair at first, but as long as you keep in mind the price difference, it does throw up a few interesting points and can highlight a few of their relative strengths and weaknesses and show where some of your money goes if you choose a more expensive pair of binoculars. This Nikon compact has, what I think are actually two hinges (it is hard to see as they are located under a cover), with both hinges located very close to each other, meaning that they almost work like single a central hinge design. Whatever the case, the two barrels can be brought closer together or pulled further apart to match the distance between your eyes ( Inter-Pupillary Adjustment) by opening or closing the hinges. This adjustment felt smooth and there was the right amount of friction to prevent them from opening or closing too easily, but not too much so as to make moving them difficult. The minimum distance between the centers of the two eye-piece lenses that can be achieved is 56mm when fully folded and the maximum is 72mm when full opened.It takes about 2½ turns of the wheel to go from maximum focus distance to the minimum. Thus I describe these as having a low geared focus mechanism. The advantage of this is that it makes fine focus adjustment easier, but on the flip side, it takes longer to make large focal adjustments than on those which take less turns.