{"id":10114,"date":"2026-11-04T10:35:45","date_gmt":"2026-11-04T10:35:45","guid":{"rendered":"https:\/\/www.endoscopi-industriali.it\/come-ottenere-immagini-nitide-con-un-videoendoscopio-industriale-distanza-luce-e-profondita-di-campo\/"},"modified":"2026-11-04T10:45:46","modified_gmt":"2026-11-04T10:45:46","slug":"come-ottenere-immagini-nitide-con-un-videoendoscopio-industriale-distanza-luce-e-profondita-di-campo","status":"publish","type":"post","link":"https:\/\/www.endoscopi-industriali.it\/en\/come-ottenere-immagini-nitide-con-un-videoendoscopio-industriale-distanza-luce-e-profondita-di-campo\/","title":{"rendered":"How to Obtain Sharp Images with an Industrial Videoscope: Distance, Lighting and Depth of Field"},"content":{"rendered":"<div class=\"wpb-content-wrapper\"><p>[vc_row][vc_column][vc_column_text 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.cn-section{break-inside:avoid}}\r\n\r\n.cobb-nitide-en{display:block;min-width:0;padding:0;font-style:normal;text-align:left;text-transform:none;letter-spacing:normal;white-space:normal!important;overflow-wrap:break-word}\r\n.cobb-nitide-en :where(div,header,section,nav,aside,figure,figcaption,p,a,li,table,caption,th,td,strong,span){font-family:Arial,Helvetica,sans-serif!important;font-style:normal!important;text-transform:none;letter-spacing:normal;white-space:normal;min-width:0}\r\n.cobb-nitide-en h1,.cobb-nitide-en h2,.cobb-nitide-en h3{font-family:Arial,Helvetica,sans-serif!important;font-style:normal!important;text-transform:none!important;word-break:normal;overflow-wrap:break-word;float:none;width:auto;max-width:100%}\r\n.cobb-nitide-en .cn-hero h1{color:#fff!important;font-size:clamp(30px,3.4vw,46px)!important;line-height:1.13!important}\r\n.cobb-nitide-en .cn-section h2{color:#0b2039!important;font-size:clamp(20px,2.1vw,26px)!important;line-height:1.3!important}\r\n.cobb-nitide-en .cn-hero .cn-eyebrow{color:#a9ceff!important}\r\n.cobb-nitide-en .cn-hero .cn-subtitle{color:#dbe8f7!important}\r\n.cobb-nitide-en .cn-body p,.cobb-nitide-en .cn-body li{color:#25364a!important}\r\n.cobb-nitide-en .cn-cta h2{color:#fff!important}\r\n.cobb-nitide-en .cn-cta p{color:#e4edf8!important}\r\n.cobb-nitide-en .cn-cta a{color:#fff!important}\r\n.cobb-nitide-en img{max-width:100%;float:none;border:0;box-shadow:none}\r\n.cobb-nitide-en .cn-body .cn-note{color:#65768b!important}\r\n@media(max-width:760px){.cobb-nitide-en .cn-section h2{font-size:21px!important}}\r\n@media(max-width:400px){.cobb-nitide-en .cn-hero h1{font-size:29px!important}}\r\n\r\n<\/style>\r\n<article class=\"cobb-nitide-en\" id=\"cobb-nitide-en-1\" lang=\"en\">\r\n<header class=\"cn-hero\"><div class=\"cn-hero-copy\"><p class=\"cn-eyebrow\">COBB \u00b7 Technical guide<\/p><h1>How to obtain sharp images with an industrial videoscope<\/h1><p class=\"cn-subtitle\">Distance, lighting and depth of field: improving image quality during inspection.<\/p><\/div><img src=\"https:\/\/www.endoscopi-industriali.it\/wp-content\/uploads\/2026\/11\/Ispezione-industriale-con-sonda-endoscopica.png\" alt=\"Illuminated videoscope probe inside a metal component\" width=\"1536\" height=\"1024\" fetchpriority=\"high\" decoding=\"async\"><\/header>\r\n<div class=\"cn-layout\"><aside><h2>In this article<\/h2><nav aria-label=\"Article contents\"><a href=\"#cobb-nitide-en-1-1\"><span>01<\/span>Depth of field: distance matters<\/a><a href=\"#cobb-nitide-en-1-2\"><span>02<\/span>Lighting: adjusting it to the surface<\/a><a href=\"#cobb-nitide-en-1-3\"><span>03<\/span>Viewing direction and field of view: two different features<\/a><a href=\"#cobb-nitide-en-1-4\"><span>04<\/span>Choosing the optics for the inspection<\/a><a href=\"#cobb-nitide-en-1-5\"><span>05<\/span>The monitor: assessing the complete configuration<\/a><a href=\"#cobb-nitide-en-1-6\"><span>06<\/span>From images to inspection documentation<\/a><\/nav><\/aside><div class=\"cn-body\"><p>During an industrial inspection, reaching the inspection area is only the first step. To examine an internal surface and document its condition, you need clear images: the feature must be in focus, properly illuminated and viewed from a suitable direction.<\/p>\r\n<p>What should you check when a feature looks blurred, too bright or difficult to interpret? Viewing distance, lighting and optical configuration are the first factors to consider. COBB instruments provide practical examples of how these parameters affect an inspection.<\/p><section id=\"cobb-nitide-en-1-1\" class=\"cn-section\"><h2><span>01<\/span>Depth of field: distance matters<\/h2><p>Depth of field is the range of distances within which the optics can show an object in focus. Moving the probe tip closer to the surface may help frame a feature, but the minimum distance specified for that configuration must be respected.<\/p>\r\n<p>The COBB GTD6.0 \/ DUAL VISION videoscope is one example. Its technical page lists two different ranges:<\/p>\r\n<div class=\"cn-table\"><table><caption>GTD6.0 \/ DUAL VISION: depth of field<\/caption><thead><tr><th scope=\"col\">Viewing mode<\/th><th scope=\"col\">Depth of field<\/th><\/tr><\/thead><tbody><tr><th scope=\"row\">Front view at 0\u00b0<\/th><td>From 10 mm to infinity<\/td><\/tr><tr><th scope=\"row\">Side view at 90\u00b0<\/th><td>From 5 to 100 mm<\/td><\/tr><\/tbody><\/table><\/div>\r\n<p>The useful viewing distance therefore changes even when switching between the two cameras on the same instrument. Before assessing a feature, consider which optics you are using.<\/p>\r\n<p>The term \u201cto infinity\u201d describes the focusing range: the actual visibility of a small feature also depends on distance, illumination and the size of the feature itself.<\/p><\/section><section id=\"cobb-nitide-en-1-2\" class=\"cn-section\"><h2><span>02<\/span>Lighting: adjusting it to the surface<\/h2><div class=\"cn-split\"><div><p>Inside a cavity, lighting must make the area being examined clearly visible. If the image contains very bright areas or reflections that obscure a feature, check the light intensity and the position of the probe tip.<\/p>\r\n<p>The COBB NZQ range uses different lighting solutions depending on probe diameter: integrated LEDs for \u00d82.0 and \u00d82.8 mm, and high-power LEDs with fibre optic light transmission for \u00d83.9 and \u00d86.0 mm. Brightness is adjustable.<\/p>\r\n<p>The NZQ Dual Light model uses a rear-mounted LED light source with fibre optic transmission and nine brightness adjustment levels.<\/p>\r\n<p>In practice, adjust the lighting gradually and compare the results on screen. If a reflection persists, changing the viewing position may help reveal the surface.<\/p><\/div><figure><img src=\"https:\/\/www.endoscopi-industriali.it\/wp-content\/uploads\/2026\/11\/Riflessi-nella-cavita-dacciaio.png\" alt=\"Light reflections on the internal wall of a metal cavity\" width=\"1536\" height=\"1024\" loading=\"lazy\" decoding=\"async\"><\/figure><\/div><\/section><section id=\"cobb-nitide-en-1-3\" class=\"cn-section\"><h2><span>03<\/span>Viewing direction and field of view: two different features<\/h2><p>Viewing direction describes where the camera looks relative to the probe axis. Field of view describes the angular width of the image.<\/p>\r\n<p>On the GTD6.0 \/ DUAL VISION, the front camera looks at 0\u00b0 and has a 120\u00b0 field of view; the side camera looks at 90\u00b0 and has a 90\u00b0 field of view. A button on the handle switches between the two views.<\/p>\r\n<p>This distinction is useful when you need to examine both the insertion path and an internal wall. If a feature is poorly framed, check the viewing direction as well as the focus.<\/p><figure><img src=\"https:\/\/www.endoscopi-industriali.it\/wp-content\/uploads\/2026\/11\/Ispezione-frontale-e-laterale-del-foro.png\" alt=\"Illustrative comparison of front and side views inside a cavity\" width=\"1774\" height=\"887\" loading=\"lazy\" decoding=\"async\"><figcaption>Left: front view. Right: side view.<\/figcaption><\/figure><\/section><section id=\"cobb-nitide-en-1-4\" class=\"cn-section\"><h2><span>04<\/span>Choosing the optics for the inspection<\/h2><p>Before selecting a probe, consider the space available between the tip and the surface to be examined.<\/p>\r\n<p>For NZQ Dual Light, the COBB website lists depth-of-field options of 10 to 200 mm or 50 mm to infinity, and fields of view of 90\u00b0, 120\u00b0 or 140\u00b0, to be selected when configuring the instrument.<\/p>\r\n<p>These are alternatives to select according to the application, rather than features available simultaneously on every probe. Close-up inspection and examination of a larger cavity therefore require the optical configuration to be assessed before purchase.<\/p><div class=\"cn-table\"><table><caption>NZQ Dual Light: options to select when configuring the instrument<\/caption><thead><tr><th scope=\"col\">Parameter<\/th><th scope=\"col\">Options<\/th><\/tr><\/thead><tbody><tr><th scope=\"row\">Depth of field<\/th><td>10\u2013200 mm or 50 mm\u2013infinity<\/td><\/tr><tr><th scope=\"row\">Field of view<\/th><td>90\u00b0, 120\u00b0 or 140\u00b0<\/td><\/tr><tr><th scope=\"row\">Viewing direction<\/th><td>Front<\/td><\/tr><\/tbody><\/table><\/div><\/section><section id=\"cobb-nitide-en-1-5\" class=\"cn-section\"><h2><span>05<\/span>The monitor: assessing the complete configuration<\/h2><div class=\"cn-split\"><div><p>COBB NZQ features a 6-inch touchscreen with a resolution of 1920 \u00d7 1080. This specification describes the display: assessing the captured image also requires consideration of the probe camera and optics.<\/p>\r\n<p>The product page states that depth of field, resolution, lighting and maximum bending angle vary with the selected diameter and length. Instruments should therefore be compared on the basis of the complete configuration intended for the inspection.<\/p><\/div><figure><img src=\"https:\/\/www.endoscopi-industriali.it\/wp-content\/uploads\/2026\/11\/Monitor-industriale-per-ispezione-videoscopica.png\" alt=\"Industrial inspection monitor on a workbench\" width=\"1536\" height=\"1024\" loading=\"lazy\" decoding=\"async\"><figcaption>Illustrative image.<\/figcaption><\/figure><\/div><\/section><section id=\"cobb-nitide-en-1-6\" class=\"cn-section\"><h2><span>06<\/span>From images to inspection documentation<\/h2><div class=\"cn-split\"><div><p>Once you have obtained a clear view, save it with information that helps identify the inspected location.<\/p>\r\n<p>NZQ allows you to capture photos and videos, add graphic and text annotations, and compare a live image with a previously saved image.<\/p>\r\n<p>To make the material more useful, associate images with the component identifier, the inspected area and the inspection date. Where possible, include an overview alongside the close-up to help locate the feature.<\/p><\/div><figure><img src=\"https:\/\/www.endoscopi-industriali.it\/wp-content\/uploads\/2026\/11\/Revisione-digitale-dellispezione-industriale.png\" alt=\"Technician reviewing inspection images on a computer\" width=\"1536\" height=\"1024\" loading=\"lazy\" decoding=\"async\"><\/figure><\/div><\/section><section class=\"cn-check\"><h2>Before capturing an image<\/h2><p>Before saving a photo or video, check:<\/p>\r\n<ul><li>That the viewing distance is within the depth of field of the optics being used.<\/li><li>That the lighting reveals the feature without excessive reflections.<\/li><li>That the viewing direction is suitable for the surface being inspected.<\/li><li>That the optics are free from contamination, following the instrument\u2019s maintenance instructions.<\/li><li>That the feature is steadily framed and can be identified in context.<\/li><li>That the recording is linked to the component and inspection location.<\/li><\/ul><\/section><section class=\"cn-cta\"><h2>Find the right configuration with COBB<\/h2><p>When choosing an industrial videoscope, start with the inspection requirements: access dimensions, probe path, distance from the surface, and the need for front or side viewing.<\/p>\r\n<p>The COBB team can help assess these factors and identify a suitable configuration.<\/p>\r\n<p><a href=\"https:\/\/www.endoscopi-industriali.it\/en\/contattaci\/\">Contact COBB to discuss your application<\/a>.<\/p><\/section><p class=\"cn-note\">The photographs are generated illustrations and do not depict specific COBB models. The technical values refer to the models and configurations indicated.<\/p><\/div><\/div><\/article>[\/vc_column_text][\/vc_column][\/vc_row][vc_row][vc_column][\/vc_column][\/vc_row][vc_row][vc_column][\/vc_column][\/vc_row][vc_row][vc_column][\/vc_column][\/vc_row]<\/p>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>[vc_row][vc_column][vc_column_text css=&#8221;&#8221;][\/vc_column_text][\/vc_column][\/vc_row][vc_row][vc_column][\/vc_column][\/vc_row][vc_row][vc_column][\/vc_column][\/vc_row][vc_row][vc_column][\/vc_column][\/vc_row]&#8230; [&#8230;]<\/p>\n<p><a class=\"btn btn-secondary understrap-read-more-link\" href=\"https:\/\/www.endoscopi-industriali.it\/en\/come-ottenere-immagini-nitide-con-un-videoendoscopio-industriale-distanza-luce-e-profondita-di-campo\/\">Read More&#8230;<\/a><\/p>\n","protected":false},"author":2,"featured_media":10100,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"inline_featured_image":false,"footnotes":""},"categories":[3],"tags":[],"acf":[],"_links":{"self":[{"href":"https:\/\/www.endoscopi-industriali.it\/en\/wp-json\/wp\/v2\/posts\/10114"}],"collection":[{"href":"https:\/\/www.endoscopi-industriali.it\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.endoscopi-industriali.it\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.endoscopi-industriali.it\/en\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.endoscopi-industriali.it\/en\/wp-json\/wp\/v2\/comments?post=10114"}],"version-history":[{"count":2,"href":"https:\/\/www.endoscopi-industriali.it\/en\/wp-json\/wp\/v2\/posts\/10114\/revisions"}],"predecessor-version":[{"id":10115,"href":"https:\/\/www.endoscopi-industriali.it\/en\/wp-json\/wp\/v2\/posts\/10114\/revisions\/10115"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.endoscopi-industriali.it\/en\/wp-json\/wp\/v2\/media\/10100"}],"wp:attachment":[{"href":"https:\/\/www.endoscopi-industriali.it\/en\/wp-json\/wp\/v2\/media?parent=10114"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.endoscopi-industriali.it\/en\/wp-json\/wp\/v2\/categories?post=10114"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.endoscopi-industriali.it\/en\/wp-json\/wp\/v2\/tags?post=10114"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}