How to install a camera with a telephoto lens

How to shoot macro with telephoto lens

After you need 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.

Extended data:

A telephoto lens is different from a wide-angle lens. When the object is magnified, the influence caused by shaking will increase accordingly. Therefore, it is very important to maintain the stability of the lens, which can be maintained by auxiliary tools such as tripod.

The multi-lens structure of telephoto lens is relatively complex, and the maximum aperture is generally small, which leads to the decrease of luminous flux to some extent.

A telephoto with a large aperture is not affordable for everyone, and the ordinary telephoto aperture is not big enough. At this time, we should improve ISO appropriately, and don't covet the pure image quality of low ISO excessively.

In macro shooting, we should correctly adjust the proportion of natural light and artificial light, and reasonably arrange the light, which can create different atmosphere and artistic conception.

Macro is especially good at expressing small things like flowers, birds, fish and insects. It can fully show details and express its creativity in topic selection, composition and lighting at will.

Reference source: Baidu Encyclopedia-telephoto lens

Lead: telephoto lens can shoot farther and clearer scenes, but do you know how to use telephoto lens well? Next, I will look at how to use telephoto lenses with you.

(1) measure light with telephoto.

Let's take outdoor portraits as an example: when shooting, the metering mode is matrix. If the exposure is determined by calculating the overall light quantity with a wide-angle photometric camera, the face of a portrait may become a "black face" due to insufficient exposure. In this case, we can zoom the lens to the model's face and fill the whole picture, then press AE-L to lock the metering, lock the exposure value, and then adjust it back to the wide-angle end for refocusing or composition. This method can ensure the quality of the model.

(2) Use a tripod

When shooting with long focal length, it is easier to blur the photos due to camera shake, especially when shooting in places with insufficient light. Moreover, in many zoom lenses without constant aperture, the maximum available aperture often decreases with the increase of focal length, which leads to the slow shutter speed, so it is safer to use a tripod for long focal length shooting.

(3) Use a hood

The range hood is not only a difference in appearance, but also a practical use. The influence of glare and diffuse light can be reduced, which is more important for telephoto lenses.

(4) Add a range finder.

If you add a telephoto lens to the telephoto lens, you can shoot farther scenery, so it is very useful to shoot the moon and birds.

(5) Use fewer filters

Unless shooting in a harsh environment or using a polarizer to reduce reflection, it is best to use fewer filters on the telephoto lens to avoid internal reflection.

(6) Make good use of the compression effect of telephoto.

The wide-angle end can shoot magnificent scenery, depth and space, while the telephoto can effectively compress the subject and background, making the distance between the subject and the background look "closer". You can try.

(7) Using telephoto to shoot shallow depth of field

The depth of field consists of aperture, focus and focal length. The longer the focal length, the easier it is to take a shallow depth of field. Even if the aperture is not large enough, the background can be blurred a little.

(8) controlling deformation

Wide-angle lenses are prone to barrel deformation, especially at the periphery of the picture. In addition to using post-production technology to improve, we can also use telephoto to reduce deformation.

How to use the telephoto lens of Google camera

Personally, I think there are the following steps:

First, make sure that the shutter is above the safety shutter.

In addition to shooting portraits, telephoto lenses are often used for ecological photography, landscape photography and other subjects. In order to ensure that the film does not paste, we first need to use a relatively safe shutter value to shoot. In fact, each lens has its own safe shutter range. At present, the accepted calculation method is "1/ current focal length".

Second, improve the ISO value.

Because the telephoto lens has a long focal length, the safety shutter will be faster, often faster than 1/200 seconds. Because the shutter is faster, if its setting remains the same, the exposure of the photo will be reduced. If the maximum aperture has been opened, normal exposure can only be achieved by increasing the I value by one or two levels.

Third, use a tripod to avoid hand shaking.

We will find that telephoto lenses are basically equipped with tripod bases, which shows that manufacturers actually recommend us to use tripods. Needless to say, the advantages of tripod can save a lot of effort. After all, the weight of telephoto lens is relatively high. Moreover, the tripod can better prevent the photos from blurring caused by hand shaking, so don't be stingy with the tripod when you go out to use telephoto.

How does the shooting function of Huawei mate30pro turn on telephoto mode?

You can turn on the camera and choose the photo mode.

Point the lens at a distant object, slide the zoom lever, or open and close your fingers on the screen to adjust the focal length.

When zooming to 15X and above, a picture-in-picture preview box will appear in the viewfinder to help you locate the focus position.

In the view frame, click the object to be photographed to focus. After the focus is clear, click on the circle to take a photo.

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.

Skills of using long focal length lens

The word photography comes from the Greek Φ φEnglish:phos (light) and Φ English: graphics (painting and drawing) or Φ graph, which together mean "painting with light". Let's take a look at the tips of using a long focal length lens with me! I hope it helps you.

1. Long focal length focusing

When using zoom lens, the correct focusing method is to focus with a long focal length first, and then choose the appropriate focal length to shoot; Because under the long focal length, the image of the subject is the largest and the depth of field is the smallest, which is convenient for accurate focusing. In the case of backlight or complex light, it is also helpful to choose appropriate partial metering, and it is not necessary to be close to the object for metering. Usually, when shooting, we often use a zoom lens with medium and long focal length as the main lens, focus on metering with the longest focal length, and then select the ideal focal length after locking the exposure, so that we don't have to move back and forth.

2. Try more at each focal length.

Although most photographers are extremely concerned about the zoom magnification of the zoom lens, they often use the long focal length at one end, and some even regard it as a fixed-focus telephoto lens. In fact, when you try to use other focal lengths to get a completely different picture, you will find that the zoom lens has considerable potential as a variable framing tool.

3. Familiar with the operation of zoom lens

In the early zoom lens, zoom and focus were adjusted by two rings respectively. At present, most zoom lenses are changed to single-loop control, which is characterized by changing the focal length by pushing and pulling the lens back and forth and rotating it left and right. Therefore, for photographers who have just bought a new mirror, they should be familiar with and keep in mind the front and rear direction of zooming and the left and right position of focusing, so as to avoid the influence of slightly turning the adjusting ring when zooming after precise focusing. This is why many more "conservative" photographers prefer to use the old-fashioned double-ring zoom lens.

4. The correct use of stents

When using a zoom lens with a focal length of more than 200mm, the lens should be fixed on a tripod and other brackets to ensure the stability when shooting.

Step 5 choose the right hood

Zoom lenses are more prone to halo than other types of lenses, so a suitable hood is essential. Sometimes the occlusion caused by the hood is invisible on the viewfinder of a single-lens reflex camera, but it is displayed on the film. This situation is most obvious when shooting in a small aperture, which often causes the hood to fall into the depth of field.

In addition, some hoods are effective at the long focal length end, but when zooming to the short focal length end, there will be vignetting caused by occlusion that cannot be seen on the viewfinder. Therefore, it is very important to choose a suitable hood for the zoom lens and use it reasonably.

6. Add a range finder.

If you need to use a long focal length, you can change your 70-2 10 mm lens into a telescopic zoom lens of 140-420mm at will for a little money, and the triple zoom lens can reach 2 10_630mm, so that your lens can immediately rank among the astronomical telescopes. But the price will be the loss of aperture series and the clarity of the photos taken.

For example, if a F4 zoom lens is equipped with a 2x rangefinder, the aperture will lose 2 levels and become F8; After adding 3 times the range finder, the maximum aperture becomes F 1 1. As you know, the best resolution of the lens should be to choose an aperture 2 levels smaller than the maximum aperture to shoot. Therefore, high-speed film and tripod must be considered when adding rangefinder, and the subject should be still.

7. Use the filter carefully

Don't add a filter to the zoom lens unless it is really necessary. You really need a protective glass on the beach or in salt water. In order to change the color temperature and create special effects, such as deepening the color of the sky and eliminating reflection, polarizers are needed. In addition, adding some optional filters will only increase the reflection problem inside the lens, which is already a headache.

8. Control the depth of the picture

Shoot with a zoom lens at a distance of 1.5 meters, with a focal length of 60mm, and shoot at a distance of 7.5 meters, with a focal length of 300 mm. The images of the subjects in the obtained photos are the same size, but the depth of the two photos is different. Photographs taken with a focal length of 60mm have a sense of depth and space in the background; 300mm focal length shooting gives the impression that the scene is compressed and the subject and the scene seem to be "closer".

9. Keep a distance to prevent deformation.

When shooting with the wide-angle end of the zoom lens, attention should be paid to keeping a proper distance from the subject to avoid deformation of the subject. It must be remembered that the main factor affecting the perspective effect is the distance when shooting, not the focal length.

10. Techniques for controlling depth of field

You can do an experiment. You can use the same aperture and the same focal length to take two photos with the same distance of 25mm and 50mm respectively, and then enlarge the photos taken with the focal length of 25mm to make the subject in the picture as big as that of 50 mm. After comparing the backgrounds of the two photos, it will be found that the background in the enlarged photo is not as hazy as that in the first photo, and actually a more useful depth of field is obtained. This method is also effective when applied to fixed-focus wide-angle lenses.

The focal length of photographic knowledge

The topic of hyperfocal distance's photography has a long history, and it is rarely mentioned in many books about photography. The author found a lot of information and made a research on this topic. There are several issues to be clarified here. 1. What are the practical and practical methods of hyperfocal distance and hyperfocal distance in photography? It is not easy to understand this topic in an easy-to-understand way. But a straightforward explanation can let us photographers know more.

The first basic camera term to be learned here is: What is the blur circle? This is helpful for understanding hyperfocal distance later.

1. What is a fuzzy circle?

This is a key term in our understanding of hyperfocal distance's photography. Fuzzy circle is also called diffusion circle in some photography textbooks.

The concept of fuzzy circle was first put forward by an article published by British photography magazine T.H. in 1866. He found through experiments that when the human eye looks at a picture with a visual distance of 25cm, it can distinguish two lines with a distance of1/4mm in the picture. A 35mm camera negative is enlarged to 20x30 (that is, enlarged by 8 times), and the circle with the diameter = 1/4mm in the photo should be the circle with the diameter of 1/32mm on the negative, which is why camera factories such as Leica later adopted the blurred circle of1/30 mm..

Basic principle of fuzzy circle

The image formed by the point light source on the image plane through the lens is a point, keeping the distance between the lens and the negative unchanged. Move the point light source back and forth along the optical axis, and the image formed on the image plane will become a circle with a certain diameter. The size of the circle depends on the deviation between the lens aperture and the point light source. As long as the diameter of the circular image is small enough and the photo looks clear enough, the circular image of the point light source will appear blurred. This critical point is called a fuzzy circle.

Second, the application of fuzzy circle

Generally, the blur circle diameter of a 35mm (135) camera lens is about 1/30mm, that of a medium camera lens is about1/5mm, and that of a miniature camera is about 1/60mm. However, the blur circle diameter determined by the camera manufacturer will be slightly different (it is recommended to refer to the camera manual).

Second, what is hyperfocal distance?

Usually, we operate the camera in the process of photography, which is nothing more than automatic (fool mode), program, semi-automatic (aperture priority or speed priority) and full manual. It is true that few people can take photos in hyperfocal distance mode.

To understand and skillfully operate the camera's hyperfocal distance mode, you need to know what hyperfocal distance is first!

Hyperfocal distance is completely different from the above four basic modes. According to the basic principle of fuzzy circle, through the combination of focal length, aperture and distance (focus ring) of camera lens, the maximum depth of field required by photographer can be achieved.

The range of depth of field is very easy for photographers who have some basic theoretical knowledge of photography. But for the above four shooting modes, the problem of depth of field can usually be solved well. However, it is difficult to deal with the depth of field in landscape photography or news documentary photography.

Hyperfocal distance-that is, the photographer applies the principle of camera fuzzy circle through the combination of focal length, aperture and distance (focus ring) of the camera lens, so that the subject has a wider range of depth of field from the near boundary of camera depth of field to the far boundary (infinity) of the scene; Similarly, the range of hyperfocal distance can be adjusted by the combination of focal length, aperture and distance (focus ring) of the camera lens.

Illustration:

Basic theoretical knowledge of hyperfocal distance's photography.

Hyperfocal distance's calculation formula is:

H=(F×F)÷(N×C)+F

The approximate formula of hyperfocal distance calculation is:

H=(F×F)÷(N×C)

H= hyperfocal distance (m)

F= focal length value of camera lens (mm)

N= aperture value of camera lens (f)

C= fuzzy circle ≈30 lines/mm (standard value is 30)

Example (approximate formula):

When the focal length of the camera lens is set to 16mm and the aperture is F32, find the hyperfocal distance?

Namely: (16× 16)÷(32×30)

=256÷960

≈ 0.267m (when one decimal place is reserved, two decimal places shall be rounded, ≈ 0.3m).

Third, the application of hyperfocal distance in photography creation.

Hyperfocal distance's application in photography mainly includes two aspects. A snapshot photography for documentary (news). As we all know, no matter how fast the camera automatically focuses or the photographer manually focuses, it takes some time. However, if hyperfocal distance photography is used, the parameters can be set in advance according to the needs of photography, without field setting. Photographers can avoid missing opportunities due to operational mistakes, and photographers can completely concentrate on capturing the desired moments and composition. Secondly, in landscape photography, because hyperfocal distance can get a very wide range of depth of field, it can make the near and far scenes clearly appear on the screen. In other words, hyperfocal distance photography can better record and reproduce the whole close shot, middle shot and long shot. Therefore, hyperfocal distance photography is a photography skill that photographers should know and master.

Of course, in the process of applying hyperfocal distance photography, you will encounter exposure problems such as hyperfocal distance. If the exposure time exceeds the limit of manual shooting, use a tripod; If the shooting distance is too close, and indoor photography is not suitable for hyperfocal distance photography because of narrow space or dark light. Hyperfocal distance photography is often ignored by photographers because of the harsh lighting conditions in the shooting process, which is also reasonable. If the shooting conditions permit, I suggest you try it. It will definitely have a different taste.