{"id":2820,"date":"2012-10-01T12:00:43","date_gmt":"2012-10-01T16:00:43","guid":{"rendered":"http:\/\/thinblueflorida.com\/?p=2820"},"modified":"2012-10-01T13:34:10","modified_gmt":"2012-10-01T17:34:10","slug":"review-bushnell-marine-7x50-binoculars-for-law-enforcement-use","status":"publish","type":"post","link":"https:\/\/thinblueflorida.com\/?p=2820","title":{"rendered":"Bushnell Marine 7X50 Binoculars for Law Enforcement Use"},"content":{"rendered":"

\"\"<\/a>Surveillance is a daily component of the job as a law enforcement officer.\u00a0 A good pair of binoculars and the understanding of how they work are essential to the task.\u00a0 Bushnell\u2019s Marine 7X50 binoculars<\/a> are outstanding in this arena.\u00a0 Why?\u00a0 That requires a little explanation.<\/p>\n

Tech alert:\u00a0 if you don\u2019t want to learn about how binoculars work, too bad.<\/p>\n

A binocular optic enhances our vision by magnifying the light that enters our eyes.\u00a0 Binocular vision means having two eyes arranged for stereoscopic viewing, which gives us depth perception.<\/p>\n

The magnification power of a binocular is the first number, say, 7 in 7X50.\u00a0 These binoculars have a 7 power (7X) magnification and a 50 mm objective lens in the front.\u00a0 The larger the objective lens, the more light it gathers.<\/p>\n

Much of police surveillance occurs in low light or darkness conditions.\u00a0 Traditionally, 7X50mm binoculars are referred to as \u201cnight glasses\u201d because of the maximum amount of light they can provide at dawn or dusk.\u00a0 This also works when the sun has gone down.<\/p>\n

Simply speaking, the size of the \u201cexit pupil\u201d of a binocular determines how much light reaches your eye.\u00a0 Dividing the 50mm objective lens by the 7X magnification gives you a 7.1mm exit pupil.\u00a0 This is important because a fully darkness-adapted human eye can achieve a 7mm pupil diameter with which to see.\u00a0 A 7mm exit pupil transmits the most light a normal, young human eye can see through a binocular.<\/p>\n

By comparison, I also have a pair of 10X25 Bushnell binoculars in my cruiser.\u00a0 The 10X magnification is good, but when the light wanes, the smaller 25mm objective lens only makes for a 2.5 mm exit pupil and thus only transfers only a third the light of 7X50\u2019s.\u00a0 I used to think my pair of 10X50\u2019s was good for night viewing, but at only a 5mm exit pupil, bigger is not always better.<\/p>\n

\"\"<\/a>Now that we understand night glasses, what other features are good?\u00a0 Bushnell\u2019s Marine binos have \u201cfully multi-coated optics,\u201d which means all air to glass lens surfaces are given multiple layers of anti-reflective coatings to aid light transmission.\u00a0 This is the best coating in a binocular.<\/p>\n

\"\"<\/a>Smaller straight-tubed binoculars, like my 10X25\u2019s, utilize roof prisms.\u00a0 Larger binoculars with offset tubes use Porro prisms to orient the light.\u00a0 The Bushnell Marine 7X50\u2019s use top-of-the-line BaK-4 Porro prisms which are made with superior optical quality glass.<\/p>\n

The binoculars in a cop\u2019s car have to be rugged, and that\u2019s where these Marine binoculars have what it takes.\u00a0 Bushnell\u2019s Marine 7X50\u2019s are protected by non-slip, non-skid thick rubber armor.\u00a0 This mitigates the hard knocks that will throw a binocular out of alignment when they are casually tossed across the passenger compartment or into a trunk.<\/p>\n

\"\"<\/a>Considering Florida\u2019s rain and humidity, of particular interest to me are waterproof and fogproof binoculars, which these 7X50 binoculars are.\u00a0 The Bushnell Marine is filled with nitrogen and hermetically sealed.\u00a0 This binocular also floats!<\/p>\n

Taking low light photos through a pair of binoculars with a camera can yield disappointing results.\u00a0 I went out at dusk to take some comparison photos and, while they don\u2019t do the binocular justice, the images do illustrate the point.<\/p>\n

\"\"<\/a>\"\"<\/a>Both photographs are unretouched, save for image size and the Florida tag.\u00a0 I have not increased or decreased the brightness of either photo.\u00a0 Both images were taken at 5:58 p.m., so the outside lighting was consistent.\u00a0 Even with my old eyes, the Bushnell binos gave a great result.\u00a0 Though I obscured the license plate in the picture, it could be read through the binoculars.\u00a0 Details by the house become very vivid.<\/p>\n

I have used these Bushnells all over town on Evening Shift and I am impressed by the clarity and depth of the image.\u00a0 Even when there is only street light illumination, the view seems like low daylight through these binoculars.<\/p>\n

With an MSRP of $219.00, but deals found around $130.00 online, the Bushnell Marine 7X50 is a true value for a binocular with full features and excellent optics.<\/p>\n

I work an urban area and there is always some artificial ambient lighting thrown from everything from streetlights to signage.\u00a0 Most nights, the moon also ponies up some added brightness.\u00a0 A good pair of night glasses, like these, lets you penetrate the shadows and surveil in the darkness.<\/p>\n

Randall<\/p>\n","protected":false},"excerpt":{"rendered":"

Surveillance is a daily component of the job as a law enforcement officer.\u00a0 A good pair of binoculars and the understanding of how they work are essential to the task.\u00a0 Bushnell\u2019s Marine 7X50 binoculars are outstanding in this arena.\u00a0 Why?\u00a0 That requires a little explanation. Tech alert:\u00a0 if you don\u2019t want to learn about how binoculars work, too bad. A binocular optic enhances our vision by magnifying the light that enters our eyes.\u00a0 Binocular vision means having two eyes arranged for stereoscopic viewing, which gives us depth perception. The magnification power of a binocular is the first number, say, 7 in 7X50.\u00a0 These binoculars have a 7 power (7X) magnification … Continue reading →<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_bbp_topic_count":0,"_bbp_reply_count":0,"_bbp_total_topic_count":0,"_bbp_total_reply_count":0,"_bbp_voice_count":0,"_bbp_anonymous_reply_count":0,"_bbp_topic_count_hidden":0,"_bbp_reply_count_hidden":0,"_bbp_forum_subforum_count":0,"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"jetpack_post_was_ever_published":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":false,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2}},"categories":[8,10,306],"tags":[518,516,517],"class_list":["post-2820","post","type-post","status-publish","format-standard","hentry","category-misc","category-street","category-technology","tag-binoculars-as-night-glasses","tag-bushnell-marine-7x50-binocular-review","tag-low-light-surveillance"],"aioseo_notices":[],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack_shortlink":"https:\/\/wp.me\/p28xkp-Ju","jetpack_sharing_enabled":true,"jetpack-related-posts":[],"_links":{"self":[{"href":"https:\/\/thinblueflorida.com\/index.php?rest_route=\/wp\/v2\/posts\/2820","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/thinblueflorida.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/thinblueflorida.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/thinblueflorida.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/thinblueflorida.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=2820"}],"version-history":[{"count":13,"href":"https:\/\/thinblueflorida.com\/index.php?rest_route=\/wp\/v2\/posts\/2820\/revisions"}],"predecessor-version":[{"id":2841,"href":"https:\/\/thinblueflorida.com\/index.php?rest_route=\/wp\/v2\/posts\/2820\/revisions\/2841"}],"wp:attachment":[{"href":"https:\/\/thinblueflorida.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=2820"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/thinblueflorida.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=2820"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/thinblueflorida.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=2820"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}