Using a telephoto lens
Using a telephoto lens is faster when you are outside, so it is not easy to blur. If the speed inside the house is slow, it will be empty. The speed used should be the reciprocal of the focal length used. Those with anti-shake are better than those without, and it’s less likely to make you feel weak when you hold it with your hands. The characteristics are: long focal length, small field of view, and large image on the film. Therefore, it can capture a larger image than a standard lens at the same distance. It is suitable for shooting people or animal activities from a distance, and shooting some objects that are inconvenient to get close to, so as to obtain natural, vivid and lifelike pictures. Since the depth of field range of medium and long focal length lenses is smaller than that of standard lenses, using this feature is beneficial to blurring the cluttered background in front and behind the focus subject, and the subject is generally far away from the camera, resulting in the perspective of portraits or main scenes. The deformation is smaller, and the portraits taken will be more vivid, so people often refer to mid-focus lenses as portrait lenses. Ordinary civilian users rarely use telephoto lenses. This is because the telephoto lens has a longer barrel, is heavy, is relatively expensive, and has a relatively small depth of field, making it difficult to focus in actual use. Therefore it is often used for professional photography.
How to use a digital camera telephoto lens
Step 1: Familiarize yourself with the basic functions of your camera before trying to shoot yourself with a telephoto lens. Practice with standard lenses if you have one. Once you feel comfortable with the camera's operation, you can start working with the telephoto lens. Step 2 Attach the telephoto lens to your camera body. The lens holds your advantage tightly in the hand, and it uses matching adjustments to guide the lens point simultaneously with the camera body. Then rotate the lens to lock the position. You should hear a noise as it locks. The camera bag stores the telephoto lens securely in case you replace it with another lens when you're out shooting. Step 3 Open your camera's aperture to its widest setting (i.e. use the smallest aperture number) if you wish to minimize depth of field. Low depth of field will isolate your subject against a blurry background, focusing the viewer's attention only on the subject. A wide aperture setting also allows you to use a shutter speed fast enough to eliminate camera shake. Step 4 Close your camera's aperture to its smallest setting if you want to maximize the field of view and place the foreground or background of the image more deeply in focus. You won't be able to achieve a strong depth of field with a telephoto lens, but you can by reducing the aperture. You will have to use a slower shutter speed to achieve the correct exposure at a smaller aperture. Step 5 Use a tripod to minimize unnecessary camera movement and blur. Please note any unexpected camera shake in close-up photos. A tripod will help you achieve maximum clarity of your images. Step 6 Set your digital camera's sensor sensitivity to a high number. Higher sensitivity enables you to use shorter shutter speeds, which will help you maximize image sharpness with appropriate risk.
How can you increase the shooting distance with a telephoto lens?
If by increasing the shooting distance you mean "you can capture the same picture even if you stand further away", There are two ways:
One is to change to a lens with a larger focal length; the other is to install a teleconverter between the lens and the body, including 1.4x and 2x. After installation, Your focal length will accordingly become 1.4 times or 2 times the original (which will reduce some image quality).
How to use telephoto to shoot big scenes
This is a SLR patent! 450 is definitely possible!
Of course, background blur refers to depth of field.
A primer on depth of field
Aside from the complex aspects of exposure and metering, photography enthusiasts often find depth of field to be one of the most difficult concepts to master. This is not difficult to understand because this is a coefficient based on assumptions based on subjective judgment. If some people did pay attention to these technical aspects, others merely crammed them to cope with the evening classes, and many almost completely ignored the technical aspects or absorbed only what was needed. I have to admit that at first depth of field seemed like an abstract theory, and the lecture notes on the "circle of diffusion" at that time were quite indicative of my attitude towards this issue. Later, I finally realized the practical value of depth of field in solving practical problems and achieving special effects for creative purposes. Below I'll walk through how to control depth of field in completely practical terms, step by step, adding new information in each section.
*Understand the basic theory.
In layman's terms, depth of field is the "acceptable clear area" extending before and after the adjusted focus. In fact, only the focused plane is truly sharp in any photo. However, objects in front and behind this plane may also appear quite sharp to the viewer. The difference in clear range is based on several criteria, which we will touch on in the following sections. Textbooks often discuss the "minimum circle of confusion" when explaining depth of field, but that is a technical issue that is not necessary for practical applications. For example: if you focus the lens on the Bengal tiger's eyes in the shadows in a natural zoo, its eyes will be the clearest on the film. At this time, the tiger's mouth and the bark behind it also showed acceptable clear images in the final photo. As you look away from the focusing eye, the blur gradually increases. Objects in the near foreground and distant background become less sharp the farther away they are from the tiger's head.
*Choose the "appropriate" aperture. Aperture is the basic element that affects depth of field. In summary, small apertures (indicated by larger f/numbers), such as f/16 or f/22, produce a wide range of sharp focus. Conversely, large apertures (indicated by smaller f/numbers), such as f/2.8 or f/4, produce a shallow depth of field and a much smaller range of acceptable sharpness on the foreground and background. When creating a work rather than simply taking a photo, the choice of aperture is a basic element. Even when using program exposure mode, you should choose the most appropriate combination of aperture and speed where feasible. Be careful, however, because when shooting with a handheld camera, subject movement or camera shake may blur the photo if exposed for a long time. Therefore, you have to compromise: choose a larger aperture that is far from ideal in order to maintain an adequate shutter speed. For example: a photo of a scene framed by a stone arcade in England. You can focus on the fountain near the middle ground and press the shutter. I took 6 actual shots, the first one at f/4, the second one at f/5.6, and so on until I shot at f/22. Later you can look carefully at the printed 8×10 inch photo. Both the arcade and the background castle image are not clear in the first shot taken at f/4. Shot at f/11 this all looks "almost sharp" but still not up to your standards. The image of the arcade, fountain, and background castle captured at f/16 all appears sharp enough, and your friend thinks this is the best photo. The image taken at f/22 is blurry due to camera shake caused by using a slow shutter speed and not using a tripod.
*Choose a longer or shorter focal length. Anyone using 28mm and 300mm focal length lenses will find that wide-angle photos often have a wide range of depth of field. In contrast, photos taken with long focal lengths generally have a shallow depth of field. This situation usually leads to a simple conclusion: at any known aperture stop, the longer the focal length, the shorter the depth of field. If you need a larger depth of field, shoot with a shorter focal length. The above appears to be an assessment of depth of field in practice. But in fact these statements are quite confusing. Depth of field does not change with different focal lengths, it is an optical fact. Don’t believe it? Then conduct a specific test using a 35mm lens and a 200mm lens. First, use a long lens to shoot the station... >>
How to use Nikon telephoto lens
Telephoto lenses are used to shoot specific targets in the distance, such as Stage, birds, wildlife, astronomy and more.
How to use a medium telephoto lens without blurry shots
As we all know, medium telephoto lenses are the most popular tools among photographers who like to shoot beautiful women (such as 70-200). It can keep characters from deforming, compress space and achieve extreme beauty with a small depth of field. It is called the golden focal length for shooting portraits. However, many photographers, including some professional photographers, sometimes take blurry shots. The most hateful thing is the blurry shots. Zhang has the best expressions and movements. Next, I will share some personal experience, hoping it will be helpful. Medium and telephoto lenses are relatively heavy, and their hands are prone to shaking. Most people like to use a large aperture to blur the background. Since the depth of field is small, it will be easy to blur the background when recomposing the shot after the focus is locked. Of course, in order to solve the problem of hand shake, high-end lenses will have an anti-shake function, but this kind of lens is not something ordinary people can enjoy, and the price is tens of thousands.
Shooting method 1. Raise the shutter and don’t shake your hand: Don’t shake when shooting with the camera in hand. The shutter can be higher than the safety shutter to be safer. Don’t shoot in too dark places, because in this case, the shutter will be lowered to ensure normal exposure (the shutter is too slow) No matter how steady your hand is, the shot will be blurry), or increase the aperture (the aperture is too large, the depth of field is too small, and it is difficult to control when locking the focus and composition), or increase the ISO (all cameras will reduce the image quality as the ISO increases. Many cameras are not very usable after 400 (good cameras have a certain amount of space), so these three are not a good thing. Of course, if it is possible to use a tripod, this problem will be solved, but it is not very convenient for shooting. 2. Open the aperture small or do not move the composition after focusing: Generally speaking, you definitely want a small depth of field when using a medium telephoto lens, so when a small depth of field is not required, open the aperture as small as possible (of course to ensure the effect) Under the premise) If the picture really requires a very small depth of field, do not move the composition after focusing. Try to choose the focus point well and avoid composing the picture after focusing. This is the biggest cause of blurry shots. Note: It is recommended for novices to use a tripod, but it is not so flexible to find angles.
How to increase the shooting distance with a telephoto lens
This is still related to the size of the object being photographed. For example, if you want to photograph a house 100-150 meters away, then A focal length of 200-300mm is enough; if it is a car a hundred meters away, you may have to use 400-500mm; if it is a small animal or bird, then 500-600 may not be enough, and you need to add a teleconverter. So please add your specific subject matter.
Hello. From what you added, it seems that the subject to be photographed is relatively small, and it may indeed be difficult if it must be 100-150 meters away. If possible, you can consider using a 600-800mm telephoto lens plus a 1.4 or 2x teleconverter, but the price is very expensive. If that doesn't work, you can look at catadioptric lenses on the second-hand market, and you can buy the ultra-long focal length you need at a relatively affordable price.
What is a telephoto lens
Introduction to the main lens types - telephoto lens
The focal length of a telephoto lens is long, up to tens of millimeters or hundreds of millimeters mm, the angle of view is small, generally within 20 degrees, and the image on the film is large, so it can take a larger image than a standard lens at the same distance, so it is generally used to shoot distant objects. Long focal length lenses are divided into two categories: ordinary telephoto lenses and super telephoto lenses. The main difference is the focal length. The focal length of ordinary telephoto lenses is close to that of standard lenses, while the focal length of super telephoto lenses is much larger than that of standard lenses.
Since the depth of field range of the telephoto lens is relatively small, it can blur the background more smoothly and highlight the subject in focus, and the subject and the camera can be farther apart, thereby reducing the distortion in the perspective of the portrait. , making the portraits taken more vivid. However, telephoto lenses have longer barrels, making them heavier, less convenient to carry, and more expensive than standard lenses. And due to the small depth of field, telephoto lenses are difficult to focus on in actual use, so generally only professional photographers will choose them. When using a telephoto lens under normal circumstances, it is best to use a tripod to assist in shooting to keep the camera stable. When there is no tripod to fix it, you should also try to find something to rely on to help stabilize the camera.
How to shoot macro using a telephoto lens
To use a telephoto lens to shoot macro, you need to adjust the camera to M mode and adjust the camera parameters. Then set the automatic zoom of the camera lens to manual zoom so that you can take macro shots. However, don’t get too close, because the telephoto lens is short and very long. If you get too close, the photos taken may be blurry, so just keep a certain distance. Turn the zoom ring and when the scene in the viewfinder is clear, press the shutter button to take the picture. Canon 70-200 Button Canon 70-200 Macro Telephoto Shooting Macro is still very simple. In fact, it is the same as shooting macro with an ordinary Pina lens, but the distance needs to be adjusted. Of course, you can also keep it very close, but if you keep it too close, the object will become too big, which will have no effect.