With an ever-increasing number of birding binoculars, telescopes
Transcription
With an ever-increasing number of birding binoculars, telescopes
Products STEVE YOUNG (WWW.BIRDSONFILM.COM) ptics buyers’ guide 2013 With an ever-increasing number of birding binoculars, telescopes and tripods on the market, with prices ranging from under £100 to more than £2,000, choosing which one to buy can be bewildering. Mike Alibone offers advice on how to get the best kit for your needs. 30 BIRDWATCH • MARCH 2013 T hinking of upgrading your binoculars or scope? Or maybe you’ve recently discovered the delights of birding and you’re considering a first-time purchase. In either case there’s a vast array of equipment out there which continues to push the boundaries of optical performance, build quality and ergonomic design. Setting out to make a purchase can appear daunting, but it need not be so. While buying new has obvious attractions, the trade in second-hand equipment is booming, as launches of new, high-end models encourage ‘musthave’ purchases. This results in the offloading of good-quality optics onto the second-hand market, thus widening the range of available – and frequently attractive – products. Whether you are buying new or second-hand, the following pages offer guidelines on aspects to consider both before and during the purchasing process. This guide should ideally be used in conjunction with the Birdwatch online optics and equipment database. Visit http:// tinyurl.com/BWOpticsGuide, where you will find a fully comprehensive list of binocular, telescope and tripod models suitable for the birding market, along with their key specifications. WWW.BIRDWATCH.CO.UK Products price. A prime example, launched last year, is Swarovski’s EL 8x32, considered by some to be the brightest 32 mm binocular on the market. The more recently launched Zeiss Victory HT 42 mm models are, however, reputedly now the brightest premium binoculars in the world. Test and compare all models in poor light conditions, under which a poor quality image will be most evident. In the current market, 42 mm still accounts for more unit sales than 32 mm, but sales of the latter continue to increase significantly, with one national retailer recently reporting sales in the ratio of 3:2 (32 mm against 42 mm) of models from top-tier manufacturers. Having decided on how much bulk you are prepared to carry around your neck, it’s essential that your chosen model feels comfortable, well balanced and easy to operate. Some binoculars feel instantly right in this respect, while others can be persistently uncomfortable, no matter how hard you try to get used to them. Magnification is the next decision point after size, with 8x being by far the most popular birding choice. It optimises image brightness and considerably opens up the field of view compared with, for example, 10x magnification models of the same range and objective size. Image quality is, of course, paramount. Check for consistent sharpness across the whole field. Are the colours natural and is there a good degree of contrast? Is the level of Size and shape Deciding which size binocular to buy is a prime consideration, with the demand for smaller, lightweight models continuing to grow. Most popular birding binoculars fall into one of two size categories based on the diameter of the objective lens: either 32 mm or 42 mm. All other things being equal, a larger objective will deliver a brighter image for the same magnification. It is rarely quite this straightforward, however, as 32 mm binoculars from top-tier manufacturers will usually outperform 42 mm models from midrange ones as a result of superior glass and coatings, so it is possible to have small, compact binoculars which also deliver extremely bright images – at a WWW.BIRDWATCH.CO.UK There is a huge range of birding optics available, as can be seen from the many different makes and models on show at the Hartlepool Western Orphean Warbler twitch in May 2012 (opposite page). The range of binoculars includes: Swarovski EL 32 8x32 (above left); Viking ED Pro 8x42 (above centre); Zeiss Victory HT 10x42 (above right); and Celestron Nature 8x42 (below). chromatic aberration (colour fringing) low and acceptable and, if you’re intending to view birds and insects at close range, is the close-focus distance also acceptable? Don’t forget to check build quality and durability. Will your binocular stand up to receiving knocks in the field? Is it waterproof as opposed to weatherproof? And, most importantly, does it have a long-term warranty? Keeping abreast of what’s new and MARCH 2013 • BIRDWATCH 31 ▼ BINOCULARS Undoubtedly the most significant change in the binocular market over the past two or three years has been the introduction of models of increasingly high standards at the lower end of the price range. The use of ED glass is becoming more common and many budget models originating from the Far East are now attractively designed and well engineered, as well as being capable of delivering images of a quality hitherto associated with more costly binoculars. The overwhelming majority of new models being launched are roof-prism binoculars. It appears that the more traditional porro-prism shape has fallen out of favour with buyers, many of whom put compactness high on their list of selection criteria and see porros as being bulky and old fashioned. Products likely to be entering the market is a good strategy if you’re in no immediate hurry to buy. As optics technology and product quality continue to improve, new lowercost models have recently been launched by Celestron, Hawke, Leica, Viking and Zeiss, among others. Look out for more new models from Nikon, Hawke and Vortex and innovative new products from Pentax during 2013. TELESCOPES attached to a tripod is potentially the heaviest piece of equipment you are likely to be carrying around for any length of time, so it’s worth taking the time to choose wisely in this respect. Straight up Whether to buy an angled or straightbodied scope is the next decision. Most manufacturers offer the same models in both body styles – but for how much longer? Optics retailers are unanimous in reporting that angled-bodied scopes now outsell straight ones by more than nine to one. There are pros and cons with each. The ultimate choice will be a matter of personal preference. A further consideration will be eyepiece type – either fixed magnification or zoom. Zoom eyepieces have now caught up with fixed eyepieces in terms of image quality and brightness, MIKE ALIBONE The number and range of low-cost telescopes is slowly continuing to rise, which is good news for birders. The guidelines for selecting and purchasing a telescope fall broadly in line with those that apply to binoculars. Although there are currently fewer to choose from, the array of models on offer is considerably more diverse. The two major considerations at the very beginning of the decision-making process relate to size and weight and to body style. As a general rule, the larger the objective, the larger and heavier the telescope – but there are exceptions. Paralleling binoculars, a larger objective will have a greater lightgathering capacity, as well as a higher image resolution. The same rule applies, however; smaller models with betterquality glass and superior coatings from top-tier manufacturers will outperform telescopes from the middle and entrylevel end of the market. For this reason, high-end telescopes with 65 mm objectives are currently selling very well, as their generally low weight appeals to many birders. If you intend to use your scope for digiscoping, then a large objective has distinct advantages because of its lightgathering capacity. Remember, a telescope 32 BIRDWATCH • MARCH 2013 WWW.BIRDWATCH.CO.UK Products frequently introduced. Alongside recently launched models from Hawke, Helios and others, Swarovski created a viral buzz at last year’s Birdfair with the launch of the revolutionary modular ATX series – a scope you can effectively break in half and carry in your coat pockets (Birdwatch 247: 53). Will other manufacturers follow suit? In 2013 look out for new products from Nikon, Hawke, Sightron and Vortex, among others, plus a new top-quality eyepiece from Kowa. TRIPODS Fortunately, the range of tripods suitable for use in birding is relatively narrow when compared with the optics market. A good tripod should be readily portable, compact, sturdy and easy to operate, as well as providing stability in all environmental conditions. If you are using your equipment for digiscoping or videoscoping choose a tripod which will support the extra weight of the camera when added to the telescope, and consider buying a counterbalance head to compensate for the change in the centre of gravity which results in tilting of the telescope/camera combination. Head on Other aspects of head design may also influence your purchasing choice as some telescope manufacturers (for example Kite, Leica and Swarovski) have designed their tripod-mounting ‘feet’ to lock directly into Manfrotto tripod heads, thus eliminating a point of weakness created by using a tripod quick-release plate to attach the scope to the head. Leg material is a major consideration. Carbon fibre is 30 per cent lighter than While there are fewer birding spotting scopes on the market than binoculars, there is still a good number of models to choose from, including (clockwise from top left): Hawke Endurance ED 20-60x85; Acuter DS20-60x80A Dual Speed 80mm spotting scope; Acuter ST 20-60x80A Waterproof; Swarovski ATX (from front) 95 mm, 85 mm and 65 mm; and Opticron HR 66 GA ED. WWW.BIRDWATCH.CO.UK MARCH 2013 • BIRDWATCH 33 ▼ especially those from high-end manufacturers, and for this reason they are now becoming the standard purchase with most telescopes. Consider also the type of focusing mechanism you are going to be most comfortable with. A single focus knob mounted above the scope’s barrel is the one most commonly encountered, but dual-focusing wheels (one for fast focus, the other for final sharpening) are becoming more popular, while some models employ an integrated helical focusing ring around the scope’s body. Also remember to check you can still focus your scope while wearing gloves. If you’re in no hurry to buy, it’s wise to keep one eye on the market to find out what’s new, what’s popular and why, and to look through as many different scopes in the field as possible before making a decision. New models and upgrades are Products aluminium, reducing the weight, but tripods made from this material are more expensive and they are more likely to be blown over in a strong breeze – with potentially disastrous consequences! Some tripod manufacturers have developed systems for connecting heads directly to the collar at the apex of the tripod to further lighten the load. This system dispenses with the need for a centre column which, if raised, reduces stability and potentially increases ‘image shake’. Check out the number of leg sections and their locking method. The combination of fewer sections plus lever locks renders the legs quicker to extend and retract and increases a tripod’s stability, but tripods with more leg sections are more compact when closed. To further increase compactness, new for 2013 is the Giottos Silk Road Series (see review on page 52), featuring an innovative new design Once you’ve got your scope, there are a couple more bits of gear you’ll need. Gitzo’s Safari Traveler birdwatching kit (left) has everything you need to support your optics, while Manfrotto’s 290 Series foldable three-way head (below left) will fit several scope models. which, when folded, makes the tripod 30 per cent more compact in comparison to a similarly sized conventional tripod. ACCESSORIES The popularity of digiscoping has given rise to a plethora of accessories designed to attach cameras to telescope eyepieces. Some scope manufacturers supply modelspecific adapters along with own-branded tripods, plus cameras, to sell as kits. Initially these took the form of cumbersome platforms and brackets for compact digital cameras, but the trend is now moving towards more tube-like adapters for DSLR cameras, which can be attached to the camera’s lens and slipped over a telescope eyepiece, offering better contact and greater stability. Adapters for iPhone cameras have also recently appeared on the market. Independent suppliers (for example SRB-Griturn in Dunstable) produce adapters for most telescope-camera combinations and they are also worth checking out for car window mounts and other accessories. n Acknowledgements The author would like to thank Ace Cameras and Optics, Cley Spy, Focalpoint Optics, Focus Optics and Richard Caplan for providing up-to-date information. • For comprehensive, downloadable data tables for birding binoculars, telescopes and tripods, please visit http://tinyurl.com/BWOpticsGuide. If you want to use your scope for digiscoping, a specially designed adapter will connect your camera more tightly to the scope eyepiece, allowing for better images to be taken. 34 BIRDWATCH • MARCH 2013
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