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#11. focal length | optics | Britannica

The focal length of a lens is the distance from the centre of the lens to the point at which the image of a distant object is formed. A long-focus lens forms a ...

#12. How Focal Length Affects Viewing Angle - Panasonic

The shortest focal length, or "ultra wide-angle"lenses, range from 14mm to 20mm, and are followed by "wide-angle" lenses from 24mm to 35mm, and then "standard" ...

#13. Focal Length: An Easy Guide to Using and Understanding ...

Focal length is the distance between the optical center of the lens, and the camera sensor or film plane when focused at infinity. The optical ...

#14. What is Camera Focal Length | PhotoModeler

You can think of focal length as the distance between the imaging plane (e.g. the image chip in a digital camera) and a point where all light rays intersect ...

#15. What is Focal Length? (And Why it Matters in Photography!)

The focal length of a lens is an indicator of the distance from the subject: the images are all framed the same. Differences arise because the focal length is ...

#16. Understanding Focal Length and How to Use It - Adorama

Focal length is the distance measured in millimeters, between the optical center of the lens and the camera sensor, where the light information ...

#17. Equivalent Focal Length - :: VIVOTEK ::

The field of view is closely related to focal length and image sensor size, but because digital image sensors do not conform to a single size standard as ...

#18. What Is the Best Focal Length? 5 Important Focal Lengths to Try

What focal length is best for your photos? We share five amazing focal lengths (and explain when to use them).

#19. A Guide to Understanding Focal Length - BorrowLenses Blog

Focal length is the distance from the front of the lens to the sensor. When a lens focuses light onto a sensor, the light is bent in such a way that it ...

#20. Focal Length, Angle of View & Perspective in Photography

The focal length of a lens determines two characteristics that are very important to photographers: magnification and angle of view. Longer focal lengths ...

#21. Understanding Focal Length | B&H Explora

The primary measurement of a lens is its focal length. The focal length of a lens, expressed in millimeters, is the distance from the lens's optical center ...

#22. focal length在線翻譯 - 海词词典

Determine the focal length of your lens. 決定你鏡頭的焦距。 As a result, the focal lengths in these planes will be different. 結果，這兩個平面內的焦距將不同 ...

#23. Focal-length Meaning - YourDictionary

Focal -length meaning · The distance from the optical center of a lens or curved mirror to the point where light rays from a very distant object converge. · The ...

#24. 固定焦距鏡頭| VS Technology

1.1" Support, Focus Tunable Wide Angle Fixed Focal Length Lenses 12MP compatible, current control allows wide range focus adjustment from 150mm to infinity.

#25. What is Focal Length and Which Lens Should I Use? - Coles ...

We often use focal lengths to describe the size of the lens. This optical measurement refers to the shape of the lens, not its physical dimensions.

#26. HP Series Fixed Focal Length Lenses - NI

高​解析度​成像​鏡頭—​HP 系列​定​焦​鏡頭​提供​多種​焦距​與​版本​選擇，​方便​搭配​最佳​設定​以​獲得​不同​的​工作​距離​範圍。​這些​鏡頭​適用於​需要145 lp/​mm ...

#27. What is lens focal length in photography? | Adobe

The focal length of a lens is the optical distance (usually measured in mm) from the point where the light meets inside the lens to the camera's sensor.

#28. focal lengths 中文 - 查查在線詞典

focal lengths 中文:n. 【攝】焦距…，點擊查查權威綫上辭典詳細解釋focal lengths的中文翻譯，focal lengths的發音，音標，用法和例句等。

#29. Camera Lens Focal Lengths: What All the Numbers Mean

Relating to photography, a normal lens is defined as a focal length that is equal to the diagonal measurement of the image format. For 35mm film ...

#30. focal length - Wiktionary

The focal point F and focal length f of a positive (convex) lens, a negative (concave) lens, a concave mirror, and a convex mirror.

#31. Understanding the Role of Lens Focal Length in Digital ...

Focal length, stated in millimeters, refers to the distance from the center of the lens on your digital camera to the image sensor. Focal length is measured ...

#32. Which Camera Lens to Use? An Introduction to Focal Length...

Usually measured in millimetres, focal length is a calculation of the distance between the converging rays of incoming light from the lens (focal point) and the ...

#33. Understanding Cameral Focal Length for the Best Results

Understanding Camera Focal Length · The shorter the focal length, the wider your angle of view will be–meaning you will be able to fit much more ...

#34. Camera lenses & focal length. What are the numbers on a lens?

The focal length is one of the defining characteristics of a lens as this determines the angle of view as well as magnification. How focal length is determined ...

#35. Focal length definition and meaning | Collins English Dictionary

Focal length definition: the distance from the focal point of a lens or mirror to the reflecting surface of the... | Meaning, pronunciation, translations ...

#36. Understanding Camera Lenses - Cambridge in Colour

The focal length of a lens determines its angle of view, and thus also how much ... Wide angle lenses have short focal lengths, while telephoto lenses have ...

#37. Focal length - Oxford Reference

Different focal lengths create different kinds of image effects. Lenses with very short focal lengths (or wide angle lenses) allow more of the picture to be ...

#38. Focal Length Definitions | Canon New Zealand

The focal length of a lens changes the angle of view which impacts the image that is ultimately captured. A shorter focal length will have a wider angle of view ...

#39. Keywords "focal length" | Keywords | Glossary of TEM Terms

focal length. When an electron passes parallel to the optical axis of a lens, the electron intersects with the optical axis at the back focal plane.

#40. Focal length - Opto Engineering

For common optical systems, in thin lens approximation, the focal length is the distance over which collimated rays coming from infinity converge to a point on ...

#41. focal length - Yahoo奇摩字典搜尋結果

focal length. 美式. ph. 焦距. Dr.eye 譯典通片語. focal length. 美式. ph. 焦距. Dr.eye 譯典通. focal length, focal distance. ph. 焦距. 牛津中文字典.

#42. Tube Lens Focal Length - Java Tutorial | 奥林巴斯生物显微镜

This interactive Java tutorial explores the effect of tube lens focal length on the angle of off-axis light rays in microscopes with infinity-corrected ...

#43. The Power of Focal Length Blending in Landscape Photography

Simply put, focal length blending is a technique where the photographer captures two, or more, images with different focal lengths and blends them together in ...

#44. Focal Length Definition - What is Focal Length by SLR Lounge

Focal length is a number expressed in millimeters (mm) that indicates a lens's field (angle) of view. A The number itself refers to the measured distance ...

#45. Depth compression and expansion with different focal lengths ...

Focal length can be defined as the distance between the camera lens and the camera sensor, providing variance in the viewing angle and magnification of objects ...

#46. Understanding Lenses: What is Focal Length? - The Beat

Focal length is the measurement (in millimeters) from the optical center of a camera lens to the camera's sensor. The optical center is also ...

#47. lens focal length - Chinese translation – Linguee

Many translated example sentences containing "lens focal length" – Chinese-English dictionary and search engine for Chinese translations.

#48. Focal Lengths - Home | Facebook

Focal Lengths. 571 likes · 2 talking about this. PHOTOGRAPHY FOR REAL PEOPLE We're a co-op of photographers who love to take great photo's for you!...

#49. Focal length - The Free Dictionary

focal length. n. Abbr. f. The distance of a lens or mirror to its focal point. Also called focal distance, focus.

#50. Liquid-crystal lens with a focal length that is variable in a wide ...

The range of the variable focusing power is very wide, covering approximately 0.8–10.7 D. In the entire focal range the LC lens maintains high optical quality.

#51. Digital Camera Basic Knowledge Lens

The distance from the center of the lens to the image focal point (=image sensor surface) is known as the focal length. It is expressed in millimeter (mm) ...

#52. DSLR Camera Basics: Understanding Focal Length - Lifewire

The scientific definition of focal length goes like this: When parallel rays of light hit a lens focused at infinity, they converge to form a ...

#53. What is focal length? | Clipchamp Blog

Whether you're a photography or videography beginner or just need a refresher, everything you need to know about focal length is here. Man ...

#54. Focal Length Explained | digiDirect

Focal length is a measurement; specifically, it's the measurement between the lens itself and the image sensor when the subject of your photograph is in focus.

#55. Guide to Focal Length in Photography (+ 7 FAQs) - Shotkit

Focal length is the system used in photography to describe how wide or tight a lens is. Listed as a number and measured in millimetres — e.g., 35mm, ...

#56. FOCAL LENGTH (noun) definition and synonyms - Macmillan ...

Definition of FOCAL LENGTH (noun): distance from centre of lens to focal point.

#57. How You Can Use Focal Length in a Different, More Creative ...

When using zoom lenses you have a large range of focal lengths available in one lens. Choosing the right amount of background in the frame is ...

#58. Telescope | Aperture: 70 mm | Focal length: 700 mm - Nedis

Telescope. Aperture: 70 mm | Focal length: 700 mm | Finderscope: 5 x 24 | Maximum working height: 125 cm | Tripod | Black / White.

#59. Understanding Focal Length - Outdoor Photo Academy

The world of photography has a measurement to tell you how “zoomed in” or “zoomed out” you are. It is called “focal lengths” and today I'm ...

#60. EZ way to find focal length of CO2 laser lens - Ophir Optronics

#61. 35mm-equivalent focal length (EOS-1D Mark IV) - Canon

The shooting range of this camera is designed to be smaller than that of 35-mm full-size cameras as shown below. Therefore, a 35mm-equivalent focal length ...

#62. The Essential Guide to Video Camera Focal Length | Artlist

Focal length measures the distance from the optical center of your lens–where the light rays converge–to the sensor or film in your camera. This ...

#63. Lens Focal Length Defined and Explained | Photzy

True or False: Focal length refers to the physical length of the lens barrel. · True or False: “Long” focal length lenses have a wide angle of view. · What angle ...

#64. Focal length - Definition for English-Language Learners from ...

Definition of focal length written for English Language Learners from the Merriam-Webster Learner's Dictionary with audio pronunciations, usage examples, ...

#65. focal length_百度百科

focal length 是一个专业名词，中文名为焦距，指的是光学系统中衡量光的聚集或发散的度量方式，指从透镜中心到光聚集之焦点的距离。亦是照相机中，从镜片中心到底片 ...

#66. What Focal Length Canon Lens? - The Digital Picture

The first step in selecting a Canon camera lens is to determine the focal length or focal length range you need.

#67. Blog | Understanding Focal Length - Australian Academy of ...

Technically, focal length is the distance between the point of convergence and the camera sensor, but that's not a particularly easy way to ...

#68. Determining optimal first-order focal lengths of zoom lenses ...

Choosing first-order group focal lengths for complex zoom lenses is a problem with too many variables to have a simple analytical solution.

#69. Focal lengths of two lenses are f and f and dispersive powers ...

Focal lengths of two lenses are f and f and dispersive powers of their materials are ω and ω. Two from achromatic combination from these, which relation is ...

#70. Focal Length Explained - Amateur Photographer

In the world of photography the focal length describes the distance in millimetres between the lens and the image it forms on the sensor (or ...

#71. How to choose the right camera lens focal length for your ...

Every lens focal length has its own time to shine, and it's not just about how much of the scene it captures. The best focal length is the one that best ...

#72. 「攝影術語」焦點與焦距(focal point, focal length) - 每日頭條

「攝影術語」焦點與焦距(focal point, focal length) ... 焦點（focal point、focus）：. 對於一個理想透鏡而言：遠處的物體可以近似地看成時位於無限遠處。

#73. Five Essential Focal Lengths Every Photographer Should Try

Why Use It?: The 24mm focal length has been used by architectural photographers, photojournalists, wedding photographers, event photographers ...

#74. Disparity Estimation Using Stereo Images With Different Focal ...

This study proposes a disparity estimation method for images captured by cameras with different focal lengths. Whereas a short focal length ...

#75. How to Find the Right Focal Length - Soundstripe

Focal length, at the absolute simplest level, is a measurement of how much of the scene will be captured on film. It's usually measured in ...

#76. Facial distortion of various focal lengths for headshots

There's more to this than just focal length. A good portrait photographer should be looking at how the elevation of the camera relative to the ...

#77. Focal Length of a Lens - Hyperphysics

The distance from the lens to that point is the principal focal length f of the lens. For a double concave lens where the rays are diverged, the principal ...

#78. Focal Length Images, Stock Photos & Vectors | Shutterstock

Find focal length stock images in HD and millions of other royalty-free stock photos, illustrations and vectors in the Shutterstock collection.

#79. 6pc Optical Lens Set, 2" - 200mm, 300mm, 500mm Focal ...

6pc Optical Lens Set, 2" - 200mm, 300mm, 500mm Focal Lengths - 3 Double Convex & 3 Double Concave, 2" (50mm) Diameter Lenses - Optically True Glass - Ground ...

#80. stereoCalibrate() changes focal lengths even when it was not ...

Anyone faced similar problem? I know it is easy to solve, I can just set focal lengths to camera matrices after stereo calibration. Share.

#81. Camera Focal Lengths and Angle-of-View (AOV) Explained

Focal length is the distance between the front of the lens and the point behind it where the light comes into focus, which for most cameras ...

#82. What is focal length? | Digital Camera World

Well, the focal length of a given lens is an optical measurement, ... Ultra-wide angle and fisheye lenses can have focal lengths as short as ...

#83. Guide to focal lengths - What Digital Camera

With any focal length longer than 50mm, telephoto lenses have a narrower field of view than wider optics, enabling you to home in on details and ...

#84. Focal Length – Tony & Chelsea Northrup

Wide-angle lenses have short focal lengths, and telephoto lenses have longer ... If you have a compact camera, divide the 35mm focal length by 1.6 (for ...

#85. Exploring How Focal Length Affects Images - Photo & Video

Subject to background compression is a powerful effect of longer focal length lenses. Long lenses have a way of flattening images, while wider ...

#86. Photography 101: Why focal length matters - Photofocus

Simply put, focal length range of a lens affects how much you can zoom in relative to the sensor size of your camera. More on this subject in a future post.

#87. Choose the Right Focal Length Lens for a Shoot - PAVILION ...

If you are carrying fixed focal length lenses, you will need to change your lens to capture wide, medium and close-up shots. Variable Focal ...

#88. This gif explains how changing focal length impacts a portrait

This fun gif shows precisely how the change of focal length affects the face of a person you're photographing. Lenses with smaller focal lengths ...

#89. What is Focal Length in Photography - Modula

This article will explain the definition of focal length, how it affects your photographs, and what the different focal lengths are used ...

#90. Effects of unequal focal lengths in stereo imaging - Science ...

In stereo imaging, usually a simplified camera geometry is considered with equal focal length cameras and their axes perpendicular to the baseline of ...

#91. How focal length affects the shape of the face - Red Bull ...

Dan Vojtech's portraiture recommendations. What is the best focal length for a portrait? How do you go about answering such a question? Easy.

#92. Lens Focal Length Tutorial - IPVM

Focal lens length is the physical distance between the lens and the sensor / imager. (Emphasis added). in my experience it's not, although ...

#93. Focal length - New World Encyclopedia

The focal length of a lens determines the magnification at which it images distant objects. The focal length of a lens is equal to the distance between the ...

#94. Definition of focal length | PCMag

Focal length is the optical distance in millimeters between a camera lens and the sensor or film. It determines the height and width of the scene being ...

#95. focal length - Society for Popular Astronomy

Typically, astronomical telescopes have focal lengths in the range of 300 mm for the smallest up to maybe 4 metres or more for a large amateur instrument. But ...

#96. Effect of using different Focal Lengths - Architekturfotografie ...

The focal length does not change the viewing angle or image frame only. Due to the practical way how photographers work, they will be forced ...

#97. Lens Focal Length - Exposure Therapy

Technically, the focal length is the distance between the secondary principal point (commonly and incorrectly called the optical centre) and the rear focal ...

#98. How Focal Length and Aperture Affect Composition - The ...

Your lens is like the eye of the camera. The focal length and aperture you select determine the way it sees and the composition of your photo.