Binoculars are the preferred optical tool for almost every serious bird viewer when close observation of rare birds is required.Unsurpassed portability and convenience make binoculars one of the best devices available for the discovery and identification of birds in a natural habitat.Read on to learn how to choose the bird-watching binoculars.

How to choose the bird-watching binoculars?

(1) Optical quality

Birding can be a recreational activity or a rigorous scientific field work.Therefore, the optical quality of the binoculars should be very important to you.Advanced optical elements allow you to identify subtle color patterns on your chest and cape and check the feathers on the wing bars.If accurate identification is your task, you will want to get the best as possible view.

Most importantly, whatever birding method you use, better optics means better viewing, which means an improved birding experience overall.Watching through clear and bright optics, you will experience an invisible, subtle pleasure.

(2) Glass plating

Cocoated —— on binocular lenses is not just objective, incidentally —— is also an important consideration.In fact, coating is critical to your ability to observe animals in distant distances through binoculars.A good lens coating reduces light reflection on the glass surface to further enhances the image.For uncoated lenses, the objective to eye lens transmittance may be less than 70%, but good lens coating can increase it to 95%.

The coating categories include: coating, at least one major optical element having coating on at least one surface, full coating, all lenses and glass surfaces; multiple layer coating, at least one major optical element having multiple antireflective compound coating on at least one surface; and full multilayer coating, all glass surfaces having 90-95% light transmittance.

(3) Easy to focus

The key to a good focal binoculars is the speed and precision.If you can’t change the focus quickly, you will miss this bird.A good focus mechanism will focus from close range to infinity in an entire circle (360) or less.Most binoculars have a linear focusing gear.

If the gear drive is slow, it performs well in a close range, but it is difficult to focus in a long range.If the gear is faster, close focus will be difficult, but distant focus will be better.A new innovation in binocular focus is the variable-speed focus gear.Using this type of gear, the focus slows closer and faster at a distance.

If you cannot get a clear focus, the image will be difficult to see.At any distance, you need the proper focus speed and depth to reach your goal.If the binoculars have a shallow depth of focus, extra effort is required to make the image clear.This also affects the focus speed when approaching the proper distance.

(4) Minimum focal length

One aspect of binoculars often overlooked by birders is the minimum focus distance .Binoculars make distant birds visually closer to birders for observation and analysis, but Erikind of the Audubon Society quickly pointed out that bird watching easily involves close observation of birds and insects relatively close to the observer.

Having a close minimum focus distance may give you an amazing close look at the being fed hummingbird or majestic butterfly.Typically, binoculars with a higher magnification have a longer minimum focal length.

(5) Wind and rain

The proof ranges from nothing to rain proof to waterproof to nitrogen purging.The waterproof seal was done with a rubber “O” ring.Active birders should get nitrogen purification against water, whether they live in a humid climate or not.Nitrogen purging can also to prevent dust, sand or anything else that might get into binoculars.That’s why we prefer the word “weatherproof.”

(6) Objective lens diameter

The larger the objective lens, the larger the binoculars can concentrate their light.The disadvantage is that the larger lens is heavier.The difference of a few ounces on the specification sheet may look small until you hike for several hours and the weight of the binoculars begins to impress on your neck and shoulders.

Birding-watching binoculars tend to favor the 40 mm range.Binoculars with 40 mm, 42 mm or 44 mm objective play a good compromise between low light capacity and portability.An objective of less than 35 mm results in more portable packaging but at the cost of the spotlight, and an objective of 50 mm or larger will provide you with a very bright image and may experience the aforementioned neck and shoulder soreness.

Another advantage of the larger objective diameter is the larger outgoing pupil at the back of the binoculars, where your eyes will focus.Using two binoculars of the same rate, the halo hitting your eye is larger and the objective is larger.Thus, 8×42 binoculars have a larger outgoing pupil than 8×35 binoculars.Larger pupil exit usually means a more comfortable viewing experience.

These are some matters needing attention to buy bird-watching binoculars, after reading this article, I believe you can choose the right binoculars, if the budget is limited, you can consider apexel binoculars, affordable oh.