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It has a horizontal field of view of 90 degrees. If you take an image and view it on your phone at a distance of 50cm it will look really ...

Opti­cal aber­ra­tions are imper­fec­tions in the way lens­es con­verge rays of light to a point. These lens aber­ra­tions can be cat­e­go­rized into two types: the imper­fect con­ver­gence of light to a focused point (affect­ing sharp­ness) and flawed geo­met­ric pro­jec­tion of the scene (man­i­fest­ing as dis­tor­tions or warp­ing). When design­ing a lens, opti­cal engi­neers face a series of com­plex com­pro­mis­es to min­i­mize aber­ra­tions. Since no lens is per­fect, engi­neers must make the best pos­si­ble trade-offs with­in the con­straints of the intend­ed use, fea­tures, pro­duc­tion costs, and tar­get price. While there is lit­tle you can do about aber­ra­tions in your lens­es (apart from stop­ping down the aper­ture), it’s help­ful to under­stand them when con­sid­er­ing a new pur­chase. More impor­tant­ly, as a pho­tog­ra­ph­er, being aware of your lens­es’ lim­i­ta­tions allows you to lever­age their strengths and avoid empha­siz­ing their weak­ness­es.

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Corning’s optical fiber products enable the voice, data, and video communications that are transforming our world. Get the details about our product offerings here.

Coma refers to a lens’s reduced abil­i­ty to ren­der a sharp point image that orig­i­nates away from the lens axis. As the name sug­gests, the result­ing image of such a point source has a shape resem­bling a comet’s tail. Coma can be min­i­mized by stop­ping down the aper­ture.

Chro­mat­ic aber­ra­tions man­i­fest them­selves as fringes of colour on high-con­trast edges. They are caused by dif­fer­ent wave­lengths of light (i.e., dif­fer­ent colours) under­go­ing vary­ing degrees of refrac­tion and being focused at dif­fer­ent posi­tions as they pass through the lens. Two types of chro­mat­ic aber­ra­tion exist: axi­al (or lon­gi­tu­di­nal) and trans­verse (or lat­er­al). Axi­al chro­mat­ic aber­ra­tions are caused by dif­fer­ent wave­lengths of light focus­ing at vary­ing dis­tances from the lens. Blue-vio­let light focus­es clos­er to the lens than red, with green com­ing into focus between them. Axi­al chro­mat­ic aber­ra­tions can be min­i­mized by stop­ping down your aper­ture, which brings the wave­lengths into accept­able focus. Trans­verse chro­mat­ic aber­ra­tions occur when dif­fer­ent wave­lengths of light focus on dif­fer­ent posi­tions of the focal plane (i.e., on the image sen­sor). These issues typ­i­cal­ly occur with short-focus lens­es, par­tic­u­lar­ly ultra-wide lens­es. Trans­verse chro­mat­ic aber­ra­tions can­not be reduced by stop­ping down the aper­ture but can be effec­tive­ly min­i­mized in raw files using soft­ware like Adobe Light­room.

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Unmatched in both bandwidth potential and performance, optical fiber revolutionized the way in which we communicate. Learn more about the capabilities of optical fiber, and what that means for you.

Nov 22, 2014 — The simple algebraic calculation is Beam Angle x .018 x Distance to Subject = Beam Spread For example a 38-degree beam angle bulb placed 30' ...

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Corning’s optical fiber products enable the voice, data, and video communications that are transforming our world. Get the details about our product offerings here.

Our commitment to quality guides every aspect of our business. For our customers, it means anticipating your needs and having the resources to support you, any place and any time.

Corning’s life-changing discoveries ushered in a telecommunications revolution and continue to change the world. Learn more about our fiber products, our history, and our focus on the future.

Our proprietary manufacturing processes ensure every product we ship meets the most stringent performance and reliability standards. Find out more about our manufacturing processes, and how they set us apart.

Apr 26, 2023 — Operating out of a 50,000-square-foot facility in Broadview, IL, Helios Labs is licensed to cultivate, extract, and manufacture/infuse cannabis ...

Aug 9, 2022 — They intentionally distort an image because they use optical distortion to simply fit as wide of a view as possible into the image frame. In ...

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Explore our comprehensive library of resources, including articles, application notes, videos, white papers, and more. Whether you want to understand the basics, or need the technical specifications for a fiber product, you’ll find it here.

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Our proprietary optical fiber manufacturing process continues to set the standard for excellence. From raw materials to delivery, each step of the process has been perfected to ensure our customers receive only the best fiber products, every time. Find out more about the process and what sets us apart.

Multiple combiners can be cascaded to combine more than two LED collimator sources. At the heart of the beam combiner is a high-performance dichroic beam ...

Our CO2 laser meniscus lenses offer superior performance and longer lifetime. Meniscus lenses enable a smaller beam diameter and hence, a reduction in spherical ...

Unmatched in both bandwidth potential and performance, optical fiber revolutionized the way in which we communicate. Learn more about the capabilities of optical fiber, and what that means for you.

When Corning invented low-loss optical fiber more than 50 years ago, it began a telecommunications revolution that continues to shape the world. And since that time, we have been on the leading edge of optical technology, developing solutions for the networks of today and tomorrow. Learn more about Corning’s contributions to optical fiber, and how those are shaping the future.

Corning’s life-changing discoveries ushered in a telecommunications revolution and continue to change the world. Learn more about our fiber products, our history, and our focus on the future.

From the desktop to the ocean, Corning optical fiber products are enabling voice, data, and video communications to meet the demands of many network applications.

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Corning is guided by a commitment to quality in every aspect of our operations. Whether you need technical assistance, order support, or industry-leading product attributes, we are dedicated to anticipating your needs and having the resources to help. Click to learn more about the services we provide and see how our quality standards have led to success.

Despite the pres­ence of opti­cal dis­tor­tions in many lens­es, their effects are often sub­tle and hard to notice in most pho­tographs. Dis­tor­tions become most evi­dent in images that fea­ture straight lines run­ning par­al­lel and close to the edges of the frame.

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Bar­rel and pin­cush­ion dis­tor­tions are often asso­ci­at­ed with spe­cif­ic focal lengths. For instance, short-focus lens­es tend to exhib­it bar­rel dis­tor­tion, while long-focus lens­es are more prone to pin­cush­ion dis­tor­tion. Zoom lens­es com­mon­ly show both types of dis­tor­tion, with bar­rel dis­tor­tion appear­ing at the wide end and tran­si­tion­ing to pin­cush­ion dis­tor­tion at the tele­pho­to end of the zoom range. This behav­iour is con­sis­tent regard­less of the absolute focal length of the zoom lens. For exam­ple, both 16–35 mm and 70–200 mm lens­es will show bar­rel dis­tor­tion at 16 mm and 70 mm, respec­tive­ly, and pin­cush­ion dis­tor­tion at 35 mm and 200 mm, respec­tive­ly.

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Corning is guided by a commitment to quality in every aspect of our operations. Whether you need technical assistance, order support, or industry-leading product attributes, we are dedicated to anticipating your needs and having the resources to help. Click to learn more about the services we provide and see how our quality standards have led to success.

Explore our comprehensive library of resources, including articles, application notes, videos, white papers, and more. Whether you want to understand the basics, or need the technical specifications for a fiber product, you’ll find it here.

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Field Cur­va­ture occurs when a lens can­not focus a flat sub­ject per­pen­dic­u­lar to its opti­cal axis onto a flat image plane. To some extent, this aber­ra­tion is not prob­lem­at­ic for por­trait, land­scape, or street pho­tog­ra­phy; how­ev­er, it is high­ly unde­sir­able in fields that fea­ture promi­nent flat planes, such as archi­tec­tur­al, tech­ni­cal, and macro pho­tog­ra­phy. The effects of field cur­va­ture can be reduced by stop­ping down the aper­ture.

Spher­i­cal aber­ra­tions result in soft-focused images that lack fine con­trast. They occur when light pass­ing through the edges of a lens focus­es clos­er to the lens than light pass­ing through its cen­tre. In most lens­es, spher­i­cal aber­ra­tion is con­sid­ered an unde­sir­able tech­ni­cal flaw. How­ev­er, in the past, con­trolled spher­i­cal aber­ra­tion was inten­tion­al­ly used in “soft-focus” por­trait lens­es. This type of aber­ra­tion can be reduced by stop­ping down the aper­ture.

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Unlike the aber­ra­tions men­tioned above, dis­tor­tions do not gen­er­al­ly affect image sharp­ness and can­not be min­i­mized by stop­ping down the lens. How­ev­er, bar­rel and pin­cush­ion dis­tor­tions can be effi­cient­ly cor­rect­ed using soft­ware like Adobe Light­room, and most mod­ern cam­eras auto­mat­i­cal­ly apply the appro­pri­ate cor­rec­tions when tak­ing a pic­ture. Cor­rect­ing com­plex dis­tor­tions is also pos­si­ble but requires a cor­rec­tion pro­file that accu­rate­ly maps the struc­ture of the warped geom­e­try.

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Lin­ear dis­tor­tions refer to devi­a­tions from an ide­al rec­ti­lin­ear pro­jec­tion. Rec­ti­lin­ear lens­es are designed to ren­der straight ele­ments in a scene as straight lines in the image. There are three main types of dis­tor­tion: bar­rel (con­vex), pin­cush­ion (con­cave), and com­plex (some­times called ‘mous­tache’ dis­tor­tion).

Aber­ra­tions are the pri­ma­ry cause of reduced acu­ity in lens­es that are cor­rect­ly focused. There are five types you should know about, chro­mat­ic aber­ra­tion, spher­i­cal aber­ra­tion, cur­va­ture of field, coma, and astig­ma­tism.

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Corning is committed to outstanding service before, during, and after delivery, with a team of optical fiber experts to help whenever you need it. Call the Optical Fiber Customer Service Department at +1 607-248-2000 or email us at cofic@corning.com.

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Corning invented low-loss optical fiber over 50 years ago. Since that time, we have continued to develop technologies and solutions that are transforming the industry, and the world. See how our history of innovation is shaping the future.

Corning is committed to outstanding service before, during, and after delivery, with a team of optical fiber experts to help whenever you need it. Call the Optical Fiber Customer Service Department at +1 607-248-2000 or email us at cofic@corning.com.

Since its invention in 1970, optical fiber has revolutionized the way in which we connect, communicate, and conduct business.

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Astig­ma­tism caus­es a sub­ject point locat­ed away from the lens axis to appear as a high­ly stretched oval at one focus dis­tance, as a high­ly stretched oval per­pen­dic­u­lar to the first at anoth­er focus dis­tance, and as a blur­ry disc in between. There are two types: tan­gen­tial and sagit­tal astig­ma­tism. In tan­gen­tial astig­ma­tism, the elon­ga­tion of sub­ject points occurs along an imag­i­nary line radi­at­ing from the opti­cal axis. In sagit­tal astig­ma­tism, the elon­ga­tion is per­pen­dic­u­lar to this line, appear­ing as if it fol­lows imag­i­nary rings cir­cling the opti­cal axis. Like most oth­er types of aber­ra­tion, astig­ma­tism can be reduced by stop­ping down the aper­ture.

Corning invented low-loss optical fiber over 50 years ago. Since that time, we have continued to develop technologies and solutions that are transforming the industry, and the world. See how our history of innovation is shaping the future.

When Corning invented low-loss optical fiber more than 50 years ago, it began a telecommunications revolution that continues to shape the world. And since that time, we have been on the leading edge of optical technology, developing solutions for the networks of today and tomorrow. Learn more about Corning’s contributions to optical fiber, and how those are shaping the future.

From the desktop to the ocean, Corning optical fiber products are enabling voice, data, and video communications to meet the demands of many network applications.

Our proprietary manufacturing processes ensure every product we ship meets the most stringent performance and reliability standards. Find out more about our manufacturing processes, and how they set us apart.

Our proprietary optical fiber manufacturing process continues to set the standard for excellence. From raw materials to delivery, each step of the process has been perfected to ensure our customers receive only the best fiber products, every time. Find out more about the process and what sets us apart.