What's the relationship between a telephoto lens and the magnification?
The focal length of a telephoto lens was longer than that of a standard lens. Its main function was to capture objects or subjects from a longer distance. In a telephoto lens, the longer the focal length, the greater the magnification. It could make distant objects or subjects appear larger in the picture, just like optical zooming in on distant objects. For example, in sports photography, a telephoto lens with a longer focal length (such as 400mm, 600mm) could magnify the subject (such as an athlete) in the picture closer than a telephoto lens with a short focal length (such as 200mm), so as to better capture the close-up expression. However, in some devices (such as mobile phones), if the zooming value (which can be compared to the zooming factor) was too large, which meant that the zooming factor was too large, it would cause the depth of field to disappear, and the main body and the background would be stuck together. Read more exciting novels for free
optical magnification of telephoto lens
In a 35mm film, the 50mm lens had a fixed magnification of one, which was called the header. However, there was no fixed and uniform value for the optical magnification of a telephoto lens. Different telephoto lenses have different optical magnifying powers. For example, mobile phone telephoto lenses may have optical magnifying powers such as 3X, 5X, and 10X, while camera telephoto lenses are commonly seen in different specifications such as 70 - 200mm. The number here represents the focal length of the lens, which is related to the optical magnifying power, but not directly equal to the optical magnifying power. Moreover, the phone's telephoto lens had a 6x magnifying power. The focal length of the lens mentioned in sports photography, such as 400mm, 600mm and other telephoto lenses, also reflected the difference in focal length of different telephoto lenses, which also reflected different optical magnifying abilities. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
telephoto lens
A telephoto lens was a type of photographic lens that had a longer focal length than a standard lens. It could capture scenes and details from a distance and create unique visual effects. Telephoto lenses were divided into two types: ordinary telephoto lenses and super telephoto lenses. The focal length of an ordinary telephoto lens was close to that of a standard lens, while the focal length of an ultra-telephoto lens was far greater than that of a standard lens. The telephoto lens was suitable for shooting scenery, sports, close-ups, and other topics. It had a unique charm. Some mobile phones were also equipped with telephoto lenses that could zoom in and simplify the background, making it suitable for shooting distant objects and buildings. The use of a telephoto lens required attention to the problem of shaking, which could be solved by using a tripod or a stable support. When choosing a telephoto lens, factors such as focal length, anti-shake function, and optical performance needed to be considered.
iPhone 15 telephoto lens
In the iPhone 15 series, the iPhone 15 Pro's telephoto lens is 12.7 million pixels, f /2.8 aperture, and can achieve 3.5x telephoto; The iPhone 15 Pro Max's telephoto lens is 12.7 million pixels, f /2.8 aperture, and has a periscope. Its periscope lens can significantly improve the zooming ability compared to the iPhone 14 Pro Max (only supports 3x zoom), and is expected to provide 5x to 10x zooming ability. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
Buy a telephoto lens or a macro lens
Telephoto lenses and macro lenses had their own advantages and disadvantages. The choice of lens depended on the shooting requirements and the shooting environment. The focal length of a telephoto lens was longer than a standard lens. Usually, a telephoto lens was between 135mm and 300mm. It could be divided into ordinary telephoto lenses (85mm-300mm) and super telephoto lenses (300mm and above). It was suitable for shooting long-distance scenes or subjects, such as wild animals, people, urban landscapes, or mountain views. It could blur the background and background to strengthen the subject, and could also be used for close-ups or to highlight the difference in size. In terms of macro shooting, the telephoto lens could shoot small objects at a certain distance to avoid disturbing the subject, such as insects or wild animals. The background blurring effect was obvious and the details were strong. However, telephoto lenses usually had a small aperture, high light requirements, and high hand-held stability requirements, which made them prone to shaking. The macro lens was specially used to shoot small objects at a close distance. It could make the subject occupy the entire picture, and the details were very prominent. It could capture the fine details of the object at close range, and it could highlight the main object by adjusting the depth of field when shooting. However, the working distance of the macro lens was short, which might disturb the subject or block the light. The background control was relatively difficult, and the background blurring effect was relatively weak. If you often shoot long-distance objects or want to shoot macro without getting close to small objects (such as shooting insects that are not easy to approach), a telephoto lens is more suitable. If you focus on shooting small objects at close range to show extreme detail, a macro lens is more suitable. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
What does lens magnification mean?
The lens magnification included zooming and magnifying. The zooming ratio refers to the change in the focal range when using the zooming lens to form an image. The principle was based on the zooming lens. The wide-angle end could expand the shooting range, and the telephoto end could enlarge the subject. The photographer could change the shooting range without moving. The camera's product manual would indicate the value. The higher the zooming ratio, the larger the focal area of the wide-angle end and the telephoto end. There were more ways to use it. Magnification is the performance parameters of an optical lens. It refers to the ratio of the image size of an object on the focal plane through the lens to the actual size of the object. The camera lens would be labeled as "maximum magnification", which referred to the lens 'maximum focal length (the focal length of the fixed-focus head was constant) and the closest shooting distance for clear imaging. For example, if the length of the object was 10mm, and the image on the film was 10mm, the lens magnification would be 1:1, the image would be 5mm, it would be 1:2, and the image would be 2mm, it would be 1:5. The macro lens was specially used to shoot small objects. Its magnification could usually reach 1:1, which could completely fill the image of the object being shot and clearly show the details and shape. At the same time, in the field of optical science, the magnifying power was one of the important indicators to evaluate the imaging ability and imaging effect of the lens. It was determined by the focal length of the lens and the closest focusing distance. In macro photography, the closest focusing distance usually determined the maximum magnifying power that the lens could achieve. In addition, the magnifying power was also an indicator of the camera viewfinder. If the magnifying power was large, the visual angle would be small, and the scenery seen during framing would be close to the original, giving a strong sense of realism. If the magnifying power was small, the visual angle would be large, and it would be easy to see the panoramic view during framing. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
Mobile phone macro lens and telephoto lens
The macro lens and telephoto lens of mobile phones had the following different characteristics in macro photography: * * 1. Magnification ** 1. * * macro lens ** - A professional macro lens could achieve a 1:1 or higher magnification, which could magnify small objects to the same size or even larger than the real thing, and could capture the details and texture of small objects very well. 2. * * Telephoto lens ** - Telephoto lenses had limited magnifying power. Although they could magnify small objects appropriately, they were not as good as professional macro lenses. * * 2. Image Quality ** 1. * * macro lens ** - It usually uses high-quality lenses and advanced optical design, and the image quality is excellent. It could produce clear, sharp, and low-distortion images, not only ensuring the detailed expression of macro photos, but also retaining the true color and texture of small objects. 2. * * Telephoto lens ** - When a telephoto lens was used for macro shooting, the image quality was different from that of a professional macro lens. There might be problems such as insufficient resolution, distortion, and noise, which would affect the clarity and realism of the image. * * 3. Portableness and ease of use ** 1. * * macro lens ** - The professional macro lens was large, and it would increase the cumbersome feeling when installed on the phone, affecting the maneuverability. Moreover, due to the extremely close focus, the requirements for hand-held stability were very high. The camera needed to be held stably or use auxiliary equipment such as a tripod. The working distance was close and the light of the object might be blocked, so additional light filling equipment was often needed. 2. * * Telephoto lens ** - The telephoto lens was a type of phone lens. It didn't have the problem of increasing the size of the device and was relatively portable. When using it, it didn't need to consider the influence of distance on stability and light like a macro lens, so the operation was relatively simple. * * 4. Shooting Effects ** 1. * * macro lens ** - It could display the microscopic world that was usually difficult to perceive. It was especially suitable for capturing tiny objects that required high magnification, such as the texture of insect wings and dewdrops on flowers. 2. * * Telephoto lens ** - When a telephoto lens had both telephoto and macro functions, it could achieve a good macro effect on some mobile phones. However, there might be differences in focus accuracy, depth of field control, separation of the main body from the background, and so on. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
European entry with telephoto lens
The customs of the European Union allowed the entry of drones, but did not mention whether the entry of telephoto lenses was restricted. There was no information indicating that there were special restrictions or requirements for telephoto lenses in Europe, so from the current information, it was possible to bring telephoto lenses into Europe. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
The advantages and disadvantages of a telephoto lens
The telephoto lens had the following advantages: 1. ** Perfect for portrait shooting **: - It could be shot from a distance to reduce the xenophobic emotions of the subject, so as to capture a portrait with a natural expression. - It had an excellent background blurring ability, which could make the subject stand out in a chaotic environment, effectively blurring the background and the front, thus emphasizing the main body of the portrait. - Using the excellent blurring ability of the telephoto lens to produce a gradual blurring effect, it could effectively increase the depth of the picture. - When shooting portraits, you should try to use side light or backlighting to avoid front light, so that the character can be better separated from the background. 2. ** Perfect for shooting distant subjects and details of objects **: - It had the function of zooming in and magnifying the scene, and could capture the details of the subject and the scene in the distance. - It was suitable for shooting subjects that were difficult to approach. 3. ** Has a feeling of space compression **: - It could make distant objects look "close" and at the same time shorten the distance between the elements in the picture to highlight the theme. 4. ** Simple and simple image **: - Using a shallow depth of field to emphasize the subject, the image of the subject would be larger, the perspective change would be smaller, and the composition of the picture would be much simpler and simpler. 5. ** Street photography **: - It can easily take photos without being noticed. It's suitable for photographers who are shy or unwilling to get close to their subjects. - It provides a compressed perspective, making the subject look closer and improving the quality of the background blur, adding variety to the photo. The further away from the subject, the less obvious the perspective distortion. - It could shoot distant objects. When a 35mm or even 50mm lens could not take good photos, a telephoto lens might be the only way to take good photos. It could also capture close-ups. - It could capture small details, such as the lines on a person's face, the bright colors of a person's shoes, and the small interactions between parents and children. 6. ** Suit for a specific scene composition **: The essence of photography is to reduce, and a telephoto lens can meet this requirement. In some scenes, you can compress the depth of field composition through telephoto. The disadvantages of a telephoto lens were as follows: 1. ** Physical characteristics **: - It was large and heavy, and its size and weight were generally larger than a 50mm lens (depending on factors such as telephoto focal length and maximum aperture). - With a small angle of view, the space of the scene was also small, making it difficult to shoot a large scene. - The blurring effect made it difficult to focus accurately. If the focus was slightly inaccurate, it would cause the main body to be unclear. 2. ** Shooting operations **: - A faster shutter speed was needed. The longer the lens, the faster the shutter speed needed to maintain the clarity of the image. Otherwise, the image would be blurred due to camera shake. - The maximum aperture was narrow, and the deeper into the telephoto field, the narrower the maximum aperture. For example, a 70 - 200mm lens would never be lower than f/2.8, and cheaper telephoto zooming would often reach its maximum at f/4 or f/5.6 (depending on the position within the zooming range). <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
What is the longest telephoto lens?
At present, the longest focal length of a telephoto lens could reach more than 1100mm. The focal length of a telescope head (a telephoto lens) was generally 800 - 1200mm. There was also a super-long focal length lens such as a 650 - 1300mm f/8.0 - 16IF Telephoto lens with a focal length range of 650 - 1300mm. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
The telephoto lens in the fruit candy
In the movie "Hard Fruit Candy," the telephoto lens had many features and effects. In terms of the push-rail lens, if you use a telephoto lens, you need to lay more rails and push a longer distance (more than 10 feet or more) at a faster speed to have the feeling of a push-rail lens. Moreover, the camera needs to be placed far away from the actor. When it stops, the focus will fall on the actor's eyes. Although the focus needs to be extremely careful, you don't have to worry too much about a slight loss of focus during shooting. This was different from using a wide-angle lens. When using a wide-angle lens to push closer to the actor, it would increase the speed of the push, but the background would occupy a larger part of the picture. If you didn't want to do this, you would have to get close to the actor, which would cause the face to be distorted. The telephoto lens could narrow the angle of view and hide the surrounding environment. This was also the reason why it was used for close-up shots. When it was combined with the push shot, the effect of focusing on the actor would be magnified. Moreover, the telephoto lens could make it easier to blur the background and separate the actors from the scene, making it suitable for dramatic moments or revealing scenes. In addition, only by using the telephoto lens to pan and combine the movements of the actors, the camera could be placed somewhere to pan and shoot the actors running quickly through the bustling scene, creating the ultimate sense of speed. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>