WHAT DOES REVERSE PORRO MEAN
Hi, I looked high ... I looked at Meade.. I looked at Celestion... They were about 30-60% more. And higher... at Pentax. at Redfield even Nikon about double$$ +++ in price. Alas I went low since these had the best reviews found for both birders, very amateur astronomers, and marksmen alike. They are clear and bright to 22 power ( they slowly deteriorate after 22). They focus well even if the field of view is small and getting smaller with magnification. They are easy to handle, for your hands to grip as the weight is not low but neither are they unbalanced or unwieldy. BUT if you have the money to spend and want the best or almost best these are not your lenses. But for the dollar they do what you need to get the job done. Mine is for stadiums to enable me to see what those in the front seats see. To watch nesting birds of prey. They'll work just fine....
10-30X60 Reverse Porro Binoculars
Enjoy the outdoors with these long-range Porro binoculars by Barska. The sturdy, rugged design with easy-to-maneuver zooming makes this a perfect way to see mid- and far-range objects. The black rubber body and firm grips are designed for easy use.
ITEM#: 14234520The Colorado 10-30x60mm Zoom Binoculars give pristine mid to long-range viewing with smooth focusing capabilities, powerful optics, and a rugged body. Zooming in is easy with a large center focus knob and right eye diopter adjustment.
- Brand: Barska
- Model: CO11338
- Body material: Rubber
- Dimensions: 3.1 inches high x 6.5 inches wide x 9.4 inches long
- Magnification: 10-30x60
- Field of view (feet): 189 feet @ 10x, 105 feet @ 30x
- Field of view (meters): 63 meters @ 10 x, 35 meters @ 30x
- Angle of view (degrees): 3.6-degrees @ 10x, 2-degrees @ 30x
- Objective diameter: 60 mm
- Close focusing distance (m): 32.8/10
- Exit pupil (mm): 6 @ 10x, 2 @ 30x
- Relative brightness: 36 @ 10x, 16 @ 30x
- Eye Relief (mm): 14 @ 10x, 12 @ 30x
- Lens coating: Fully coated
- Lens color: Blue
- Prism type: Porro
- Prism coating: BAK-7
- Focusing system: Center
- Eyecups: Rubber fold down
- Warranty: Limited lifetime
|Magnification||30 - 40X|
|Objective Lens||60 - 69mm|
|Manufacturer Warranty||Limited Lifetime|
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Hi, I looked high ... I looked at Meade.. I looked at Celestion... They were about 30-60% more. And higher... at Pentax. at Redfield even Nikon about double$$ +++ in price. Alas I went low since these had the best reviews found for both birders, very amateur astronomers, and marksmen alike. They are clear and bright to 22 power ( they slowly deteriorate after 22). They focus well even if the field of view is small and getting smaller with magnification. They are easy to handle, for your hands to grip as the weight is not low but neither are they unbalanced or unwieldy. BUT if you have the money to spend and want the best or almost best these are not your lenses. But for the dollar they do what you need to get the job done. Mine is for stadiums to enable me to see what those in the front seats see. To watch nesting birds of prey. They'll work just fine.Read More
Questions & Answers
Thank you for your inquiry. Roof prism, Porro prism, and reverse Porro prism binoculars each use image-erecting prisms to provide correctly oriented images. Without prisms, the image would always appear upside down and reversed. Most of us recognize the Porro prism as a “classic” binocular design with offset prisms while the roof prism binocular is shaped like an H: more streamlined and compact. The size, type, and quality of the prisms used in a binocular’s design affect the clarity of the image. You may prefer one style over another based on its ergonomics. Since roof prism binoculars are more expensive to manufacture, economics will also be a factor in choosing which style is best for you. Porro Prism Binoculars: Porro prism models will deliver good optics for the dollar, but lack the durability and compact styling of roof prism models. In addition, many Porros are not waterproof. Reverse Porro Prism Binoculars: This design allows for a compact binocular that easily fits in your hand. Roof Prism Binoculars: In recent years, the popularity of the roof prism design has increased dramatically. These binoculars are rugged and durable, and you no longer have to spend more money to get good optical quality in this design.
FAQs about Binoculars
Whether you're an outdoorsman, sports fan, star gazer or sightseer, a good pair of binoculars is a must. Binoculars bring the view to you in spectacular detail making your favorite activities even better. Finding a pair of binoculars that does what you want it to do will improve almost any outdoor activity.
How to Care for Binoculars
Thanks to the zooming power of binoculars, you can gain access to sights that would otherwise be inaccessible. Binoculars are perfect for bird watching, taking on a hike and a plethora of other uses. However, spotting sights are only as good as the maintenance that goes into them. A broken or dirty pair of binoculars isn't going to do the job correctly. Whether you have a pair of bird watching binoculars, night vision binoculars, a monocular or any other variety of binoculars, they'll only work correctly if you give them the proper care. Make sure you keep the window to nature open by keeping your binoculars in good working condition. Here are some tips to make sure your binoculars have a long shelf life.
Binoculars Buying Guide
Many outdoor activities have recently grown in popularity, including nature watching with binoculars. From watching larger animals, like deer and bear, to watching delicate birds or raptors in flight, a pair of binoculars is an important accessory. They can also give you a better view at a concert or sporting event, and you can even use binoculars for star gazing. The world has so many amazing things out there for you to see, and to see it all clearly, you'll need binoculars. If you are not sure how to buy them, let this buying guide help you focus on your new hobby.
Best Binoculars for Stargazing
Telescopes have long been regarded as the primary tool for amateur and professional astronomers. But for backyard stargazers, the right tool could be a high-quality pair of binoculars. Less expensive than telescopes, binoculars can provide the stargazer with views of the moon, planets and even the occasional galaxy. Just as if you were buying a telescope, though, you want to consider several factors and features of the different kinds of binoculars before making your purchase.
Best Binoculars Extras
If you have read our binoculars buying guide, you know what to look for when you're shopping. If you'd like extra features in your binoculars that make them truly special, then consider these. You can often find great discount binoculars with plenty of extras by shopping online. Whether you need bird-watching binoculars, a monocular, or some night vision binoculars, you'll appreciate a few extra features.
How to Use a Spotting Scope
A spotting scope is a good alternative to binoculars and telescopes. Spotting scopes have more range of magnification than binoculars and are easier to carry and more compact than telescopes.
Spotting Scope Fact Sheet
Spotting scopes, sometimes referred to as monoculars, are small, telescope-like optics that began as tools used by the military. Today, they are widely used in the consumer market for hunting, bird watching, viewing ships, scoring shooting range targets and photography. Spotting scopes can mount on a common camera tripod and are quite suitable for daytime use. They provide more magnification than binoculars and are more portable than most telescopes.
Night Vision Terminology
There's quite a bit of science that explains night vision, but only a few terms will be important as you choose a night vision device. When you're searching for optics and binoculars to use for night vision, you will want to pay attention to such things as light amplification, resolution and clarity. The following terms can help you understand what aspects of your night vision device will affect how well you see when you use it.
Telescopes - Myths and Facts
Amateur astronomy equipment ranges from telescopes that will barely fit in the back of a truck and expensive computerized navigation systems to inexpensive binoculars and basic star maps, with everything in between. If you're a beginning hobby astronomer, where should you start? Are refracting telescopes best, or are reflecting telescopes? Should you buy the most expensive telescope you can or start small? You can ask hundreds of different questions about buying a first telescope, but a good way to begin your research is to clear up a few common myths about telescopes.
Night Vision Buying Guide
Night vision devices have been in use since World War II, but in recent years, night vision has become available to civilians as well. Night-vision devices allow you to see in very low lights. Like other optics and binoculars, night-vision devices can also magnify objects so they will appear closer, but the main use of night vision is to see things that your eye wouldn't normally be able to see in the dark or in low light. With all of the great uses for night vision, you may want to join in the fun, but if you're not sure how to buy night vision, then it can be tricky to know where to start. This night vision buying guide was designed to help you understand the different types of night-vision devices so you can find the one that works best for you.
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Sparkling jewels have decorated royalty and the occasional lucky commoner for centuries, so many famous diamonds have fascinating stories. Here are a few fun facts about some of the largest, most brilliant diamonds in history. When you shop for your own diamond jewelry, you can take part in the historical tradition of wearing remarkable stones.
Top 10 Unusual Gemstones
If you love unique jewelry, spice up your collection with some unusual gemstones. While the more common gems, like amethyst, citrine, and sapphires, are still popular, beautiful gemstone jewelry can also feature lesser known stones. Many unusual gemstones are bi-colored or tri-colored; others have fascinating patterns. How you wear unique gemstone jewelry is limited only by your imagination; here are a few ideas that will inspire you to try wearing something new.
Top 10 Billiard Accessories
Billiards, or pool, is a game that lends itself to professionals and beginners alike. It can be a leisurely or highly competitive activity. What every billiard table owner needs to know, whether you have a pool table in your recreation room or at your place of work, are what the top 10 billiard accessories are. These billiard accessories can make the game of billiards even more enjoyable for your guests or patrons.
Top 10 Small Appliances
Appliances make life easier. Nowhere is this more evident than in the kitchen, where large and small appliances save people time and effort every single day. Although large appliances, such as refrigerators, ovens and dishwashers, are crucial to a functional kitchen, small appliances bring a diversity of conveniences to your kitchen. No kitchen should be without these top 10 small appliances.
Top 10 Things to Do with Your Planner
Whether you are using an electronic day planner or the good old-fashioned paper variety, you probably check it several times a day. Many people use their planners and organizers to keep track of every aspect of their lives. With so many uses, it's no wonder some people can't live without them. Planners and organizers are more than just a calendar; they provide a single location for you to keep every piece of valuable information you might need throughout your day, week and year.
Top 10 Hamilton Watches
A great watch is not hard to find when you shop Hamilton watches. Hamilton has been around for over 100 years, and men's watches and women's watches from Hamilton combine precision and luxury styling into an affordable wristwatch. You have many Hamilton watches to choose from, and each Hamilton wristwatch offers something different. Shop Hamilton wristwatches based on your fashion preferences, lifestyle and personal interests. Consider these top ten models when shopping for men's watches and women's watches from Hamilton.
Top 10 Laundry Tips
Doing the laundry may not be your favorite household chore, but with the right laundry supplies and a few tips, it can be much easier to tackle. Don't let stains and wrinkles get you down. Just keep these tips in mind while you do the laundry.
Top 10 Decorating Mistakes
You don't have to be a professional to decorate your home, but, without experience, it can be hard to predict what will work and what won't. While decorating is generally an extension of your own style, following a few rules will make all the things you love look better and feel better. These top ten mistakes and their tried-and-true solutions may help to steer you in the right direction.
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Unless you have a professional tool set in your possession, chances are you have found yourself faced with a project at home without the tools to complete it. But all you really need is 10 basic tools and you'll be able to take on most, if not all, of the repairs needed in your home.
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The transition from winter to spring can be hard to dress for. One day may be bright and sunny, and the next can bring spring showers. There are, however, specific clothing pieces that can make dressing during the transition easier. These tips will help you get through those few weeks when the weather can be unpredictable.
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