Choosing the right pair of binoculars can feel overwhelming with so many numbers and features. If you’re wondering how to pick binoculars, the process becomes simple once you know what the specs mean. This guide will walk you through the key factors in plain language, so you can find the perfect pair for your adventures without confusion or overspending.
Let’s start with the most important numbers you’ll see on every binocular: the magnification and objective lens size, like 8×42 or 10×50.
How to Pick Binoculars
The first step is understanding these two numbers. They are the foundation of your choice.
Decoding the Numbers: Magnification and Lens Size
The numbers are written as “magnification x objective lens diameter (in mm).” An 8×42 model is very common.
* Magnification (the first number): This tells you how much closer the subject appears. An 8x binocular makes things look 8 times closer than they do with your naked eye. Higher isn’t always better. More magnification (like 12x) makes the image bigger but also shakier, as it amplifies every tiny hand movement. It also gives you a narrower field of view.
* Objective Lens Diameter (the second number): This is the size of the lenses at the front, measured in millimeters. Larger lenses (like 42mm or 50mm) gather more light, resulting in a brighter image, especially in low-light conditions like dawn or dusk. However, they also make the binoculars heavier and larger.
Popular Configurations and Their Best Uses
Here’s a quick guide to help you match the numbers to your activity:
* 8×42: The All-Rounder. Excellent for birdwatching, wildlife viewing, sports events, and general use. It offers a good balance of brightness, stability, and field of view.
* 10×42: For More Detail. Ideal for open landscapes, large-field sports, or distant wildlife where you want more detail. Requires a steadier hand or might benefit from a support.
* 7×35 or 8×32: Lightweight Champions. Perfect for hiking, backpacking, or theater-going where weight and size are critical. They are very easy to hold steady.
* 10×50 or 12×50: For Low Light and Distance. Great for astronomy, marine use, or hunting in dim light. They are heavier and often need a tripod adapter for the higher magnifications.
Key Optical Features to Compare
Beyond the basic numbers, these features determine image quality and comfort.
Prism Type: Roof vs. Porro
Binoculars use prisms to correct the image. There are two main designs:
* Roof Prism: Has straight barrels, making them more compact, sleeker, and often more durable. They are typically more expensive for high-quality optics.
* Porro Prism: Has offset barrels (the lenses are not in line with the eyepieces). They often provide better depth perception and can offer excellent value for money, but are bulkier.
For most people, a good roof prism binocular is a great choice for its portability.
Lens Coatings are Crucial
Coatings reduce glare and increase light transmission. More coatings mean a brighter, sharper, higher-contrast image. Always look for these terms:
* Coated: A single layer on some lenses. The basic option.
* Fully Coated: A single layer on all air-to-glass surfaces. Good.
* Multi-Coated: Multiple layers on some lenses. Better.
* Fully Multi-Coated: Multiple layers on all air-to-glass surfaces. This is what you want for the best clarity and color fidelity.
Comfort and Usability Factors
A binocular that isn’t comfortable won’t get used. Pay attention to these physical aspects.
* Eye Relief: This is the distance your eye can be from the eyepiece and still see the full image. It’s critical if you wear glasses. Look for long eye relief (15mm or more). Most models have twist-up eyecups that you can adjust down if you wear glasses, or up if you don’t.
* Field of View: This is the width of the area you see, usually measured in feet at 1000 yards. A wider field of view makes it easier to follow moving subjects like birds or athletes.
* Weight and Feel: Hold the binoculars. Do they feel balanced in your hands? Are the focus and diopter adjustments easy to reach and smooth to turn? Textured, rubber-armored coatings provide a secure grip and some protection from bumps.
* Close Focus: The minimum distance at which the binoculars can focus. If you enjoy looking at butterflies, insects, or flowers, a close focus of 6 feet or less is a valuable feature.
A Step-by-Step Selection Process
Follow this simple checklist when your ready to make your decision.
1. Determine your primary use. (Birding, hiking, sports, concerts, astronomy).
2. Choose a magnification and size combo that fits that use (e.g., 8×42 for birding).
3. Set a budget. Good binoculars start around $100, with excellent options between $200-$500.
4. Look for “Fully Multi-Coated” optics in your price range.
5. Check the eye relief if you wear glasses.
6. Read reviews from trusted sources and users with similar needs.
7. Try before you buy, if possible. Visit a store to feel the weight and test the focus.
Remember, the best binoculars for you are the ones you’ll actually carry and use. A moderately-priced, fully multi-coated 8×42 that feels great in your hands is far better than a bulky, top-tier model that stays at home because its to heavy.
FAQ: Your Binocular Questions Answered
What do the numbers on binoculars mean?
The numbers (e.g., 10×42) indicate magnification power and the diameter of the front objective lenses in millimeters. The first is how much closer things appear, the second affects brightness and size.
What is the best all-purpose binocular magnification?
An 8×42 configuration is widely considered the best all-around choice. It provides a bright image, a wide field of view, and is easy to hold steady for extended periods.
Are more expensive binoculars worth it?
Generally, yes. Higher price typically brings better lens coatings, superior glass, more precise construction, and better durability/weatherproofing. The law of diminishing returns applies, but the jump from $50 to $200 is usually very noticeable.
What does “field of view” mean?
Field of view is the width of the area you can see through your binoculars at a specific distance. It’s like the size of the window your looking through. A wider field makes tracking movement much easier.
How do I adjust binoculars for my eyes?
First, set the central hinge so the binoculars match the distance between your eyes. You should see a single, circular image. Then, cover the right lens and focus the center wheel on a distant object with your left eye. Next, cover the left lens and turn the diopter adjustment (usually on the right eyepiece) to focus for your right eye. Now your binoculars are set for your vision, and you only need to use the center wheel.
By following this guide, you can confidently navigate the options and select a pair of binoculars that will bring the world closer for years to come. Start with your intended activity, understand the basic specs, and prioritize optical quality and comfort in your budget.