How to use telephoto lens?

With telephoto, it is fast when it is outside, and it is not easy to be empty. If the speed in the room is slow, it will be empty. The speed used should be the reciprocal of the focal length used. The one with anti-shake is better than the one without anti-shake, and it is not easy to be weak when you hold it with your hand. Features: long focal length, small field of view and large negative imaging. Therefore, at the same distance, you can take larger images than the standard lens. It is suitable for photographing the activities of distant people or animals, and shooting some inaccessible objects to get natural and vivid pictures. Because the range of depth of field of the medium-long focal length lens is smaller than that of the standard lens, it is beneficial to blur the background of the subject, and the subject is generally far away from the camera, which has less deformation in the perspective of the portrait or the main scene and will make the portrait more vivid. Therefore, people often call the medium focus lens a portrait lens. Ordinary civilian users rarely use telephoto lenses, because the lens barrel of telephoto lenses is long and heavy, relatively expensive, and the depth of field is relatively small, so it is difficult to focus in practical use, so it is often used for professional photography.

How to use the telephoto lens of digital camera

Step 1 Familiarize yourself with the basic functions of your camera, and then try your own telephoto lens. If you have a standard lens, practice with it. Once you are comfortable with the operation of the camera, you can start using the telephoto lens. Mount the telephoto lens on the camera body. The lens holds your advantage tightly in your hand. It uses matching adjustment and guides the lens point of the camera body. Then rotate the lens to lock the position. You should be able to hear the noise because the door is locked. If you change another lens when shooting outside, the telephoto lens camera bag is stored in a safe lens. Step 3 If you want to minimize the depth of field, set the aperture of the camera to the maximum (that is, use the minimum number of apertures). Low depth of field will isolate your audience's attention to a vague background theme and only focus on the problem itself. The large aperture setting also allows you to use the shutter speed fast enough to eliminate camera shake. Step 4: Turn off the minimum aperture setting of the camera. If you want to maximize the view and position, the foreground or background of the image will become deeper in focus. You won't have a strong depth of field in the telephoto lens field, but you can narrow its aperture. You must use a slower shutter speed to get the correct exposure with a smaller aperture. Use a tripod to reduce unnecessary camera movement and blur. When taking close-up photos, please pay attention to any unexpected camera shake. A tripod will help you get the highest definition image. Step 6, set the number of high-sensitivity sensors of the digital camera. Higher sensitivity enables you to use a shorter shutter speed, which will help you maximize image clarity.

What method can a telephoto lens use to increase the shooting distance?

If by increasing the shooting distance you mean "you can take the same picture from further away", there are two ways:

One is to change a lens with a larger focal length; The other is to install a range finder between the lens and the fuselage, which is 1.4 times and 2 times. After installation, your focal length will be correspondingly 1.4 times and 2 times (which will reduce some image quality).

How to shoot a big scene with telephoto

This is the patent of SLR! 450 is definitely ok!

Of course, background blur refers to the depth of field.

Introduction to depth of field

In addition to the complicated aspects of exposure and photometry, photographers usually find that depth of field is the most difficult concept to master. This is not difficult to understand, because it is a hypothetical coefficient based on subjective judgment. If some people really pay attention to these technical problems, some people just cram for evening classes, while many people almost completely ignore the technical problems or only absorb what is urgently needed. I have to admit that at first, depth of field seems to be an abstract theory. At that time, the lecture on "diffusion circle" quite explained my attitude towards this issue. Later, I finally realized the practical value of depth of field in solving practical problems and realizing special effects for creation. Next, I will introduce how to control the depth of field step by step in completely practical terms, and add new information in each part.

* Understand the basic theory. Generally speaking, the depth of field is an "acceptable clear area" extending around the adjusted focus. In fact, in any photo, only the plane in focus is really clear. However, in the observer's view, the objects before and after this plane may also appear quite clear. The difference of clear distance is based on several standards, and we will touch on the following parts. Teaching materials often discuss the "minimum dispersion circle" when explaining the depth of field, but that is a technical problem and there is no need for practical application. For example, in the nature zoo, you focus on the eyes of the Bengal tiger in the shadow, and its eyes are the clearest on the negative. At this time, the tiger's mouth and the bark behind it also showed an acceptable and clear image in the final photo. When you look away from your focused eyes, the degree of blur gradually increases. The farther away from the tiger's head, the worse the clarity of objects in the near foreground and far background.

* choose "appropriate" aperture. Aperture Aperture is the basic factor that affects the depth of field. Generally speaking, a small aperture (represented by a large f/ value), such as f/ 16 or f/22, will produce a wide clear focus range. On the contrary, a large aperture (represented by a small f/ value), such as f/2.8 or f/4, produces a shorter depth of field, and the acceptable clear range on the foreground and background is much smaller. To create a work instead of simply taking a photo, the choice of aperture is a basic element. Even when using the program exposure mode, if possible, you should choose the most suitable combination of aperture and speed. However, it should be noted that because of the hand-held camera shooting, if it is exposed for a long time, the movement of the subject or camera shake may blur the photo. Therefore, you have to compromise: choose a larger aperture that is far from ideal to maintain sufficient shutter speed. For example, shoot a scene of a frame formed by a stone arcade in Britain. You can focus on the fountain near the middle lens and press the shutter. Take six pictures, the first one is f/4, the second one is f/5.6, and so on until the second one is f/22. After that, you can carefully observe the printed 8× 10 inch photos. The arcade and the background castle in the first photo taken with f/4 are not clear. All this looks "almost clear" with f/1,but it still doesn't meet your standards. The images of arcades, fountains and background castles taken by f/ 16 are clear enough, and your friends think this is the best photo. However, the image taken by f/22 is blurred, which is caused by the use of low-speed shutter, no tripod and camera shake.

* Choose a longer or shorter focal length. Anyone who uses 28 mm and 300 mm focal length lenses will find that wide-angle photos usually have a wide range of depth of field. On the contrary, those photos taken with long focal length are generally shallow in depth of field. This situation usually leads to a simple conclusion: the longer the focal length, the shorter the depth of field of any known aperture position. If you need a photo with a larger depth of field, shoot it with a shorter focal length. The above seems to be the evaluation of depth of field in practice. But in fact, these statements are quite confusing. It is an optical fact that the depth of field will not change with different focal lengths. Don't you believe it? Then use 35 mm lens and 200 mm lens for specific test. First of all, take a long shot at the station >>

How to use Nikon telephoto lens

The telephoto lens is used to shoot distant specific targets, such as stage, birds, wildlife, astronomy and so on.

How to use a medium telephoto lens without shooting?

As we all know, the medium telephoto lens is an artifact in the hearts of many film photographers who like to shoot beautiful women (such as 70-200). The medium telephoto lens can keep the characters unchanged, compress the space, and achieve the ultimate aesthetics with a small depth of field. Known as the golden telephoto lens for taking portraits. But many cinematographers, including some professional photographers, sometimes take virtual shots, and the most hateful one is the one with the best expression and action. Next, I would like to share my personal experience, hoping it will be helpful. The medium telephoto lens is heavy and the hand is easy to shake. Most people like to blur the background with a large aperture. Because of this small depth of field, it is easy to blur when re-composing after focusing. Of course, in order to solve the problem of hand shake, the advanced lens will also have anti-shake function, but this kind of lens is not expensive for ordinary people, and the price is tens of thousands. Shooting method 1, improve the shutter hand not to shake: don't shake when shooting with a hand-held camera, the shutter can be higher than the safety shutter, and don't shoot in the dark, because in this case, for normal exposure, the shutter will be lowered (if the shutter is too slow and too stable, the hand will take a fake shot), or the aperture will be increased (if the aperture is too large and the depth of field is too small, it is difficult to grasp when locking the focused composition), or ISO. Of course, if it is possible to use a tripod, this problem will be solved, but it is not convenient to shoot. 2. Turn down the aperture or don't move the composition after focusing: Generally, medium and long focus are intended to have a small depth of field, so when a small depth of field is not needed, try to turn down the aperture (of course, under the premise of ensuring the effect). If the picture really needs a small depth of field, don't move the composition after focusing. Try to choose the right focus and avoid composition after focusing, which is the biggest reason for false shooting. Note: for beginners, it is recommended to use a tripod, but the angle is not so flexible.

What method can a telephoto lens use to increase the shooting distance?

This is related to the size of the subject. For example, if you want to shoot a house beyond 100- 150 meters, then the focal length of 200-300mm is enough. If the car is outside 100 meters, it may take 400-500mm；; If it is a small animal or bird, it may not be enough to use 500-600, just add a range finder. Therefore, please add your specific topic.

Hello. Judging from your supplement, it seems that the subject to be photographed is relatively small, and it may be really difficult if it must be 100- 150 meters away. If possible, you can consider using a telephoto lens of 600-800mm and a rangefinder of 1.4 or twice, but the price is very expensive. Really not, you can look at the catadioptric lens in the second-hand market, and you can buy the extra long focal length you need at a relatively approachable price.

What is a telephoto lens?

Brief introduction of main lens types-telephoto lens

A telephoto lens has a long focal length, which can reach tens or hundreds of millimeters, and a small viewing angle, generally within 20 degrees. It forms a large image on the negative, so it can shoot a larger image than the standard lens at the same distance, so it is generally used to shoot distant objects. Telefocal lenses are divided into ordinary telephoto lenses and ultra-telephoto lenses. The main difference is the focal length. The focal length of ordinary telephoto lens is close to that of standard lens, while the focal length of ultra telephoto lens is much larger than that of standard lens.

Because the depth of field of telephoto lens is relatively small, it can blur the shooting background and highlight the focused subject, and the subject and camera can be far apart, thus reducing the deformation in portrait perspective and making the shot portrait more realistic. But the lens barrel of telephoto lens is longer, so it is heavier than standard lens, inconvenient to carry and more expensive. Moreover, telephoto lenses are difficult to focus in practical use because of their small depth of field, so only professional photographers will choose them. Generally, a telephoto lens is used, and it is best to use a tripod to assist shooting to keep the camera stable. Try to find something to help stabilize the camera without a fixed tripod.

How to shoot macro with telephoto lens

To shoot macro with telephoto lens, it is necessary to adjust the camera gear to M and adjust the camera parameters. Then set the automatic zoom of the camera lens to manual zoom, so that you can shoot macro. But the distance should not be too close, because the telephoto lens is short and long. If you get too close, the photo may be blurred. Just keep a certain distance. Turn the zoom ring. When the scene in the viewfinder is clear, press the shutter button to shoot. Canon 70-200 button Canon 70-200 macro telephoto shooting macro is still very simple. In fact, it is the same as ordinary camera macro, but the distance needs to be adjusted. Of course, it can be very close, but if it is too close, things will become very big, and it will have no effect.