How to set the camera focus?

Question 1: How does the camera set multi-focus? 1, you can select "autofocus selection mode", and the camera will automatically select the focus.

2. You can also select "Manual Focus Selection Mode" to control the focus yourself. At this time, it depends on whether the two subjects you shot are not in a focal plane. If it is (such as two people standing side by side), you can ensure that both themes are clear as long as you focus on a certain theme casually; If not (such as two people standing in tandem), you can only choose one subject that you think needs to be clear to focus on, and the other is not so clear.

Question 2: What is the focus setting of the SLR camera? There is only one focusing plane, so it is impossible for multiple planes to focus at the same time. ..

So you can't focus on multiple points at the same time ~ unless the points are on a plane, but if they are on a plane, there is no difference between multiple points and single points ~ hehe

Question 3: Canon SLR, how to adjust the focal length and focus mode? Canon digital SLR cameras have four focusing modes.

They are a lens.

Artificial intelligence focusing

Artificial intelligence servo focusing

Manual focusing (MF)

These four types are used for focusing in different scenes. Let's take a look at their functions:

Single autofocus

In this focusing mode, as long as the shutter is pressed half a time, the red dot in the camera viewfinder will light up, indicating that the focus is completed.

If you want to adjust the focal length, you can dial the dial next to the shutter, select the focal length, and then press the shutter half-way. When focusing, press the shutter completely to get a clearly focused photo.

This focusing mode is mainly used to shoot static objects, portraits, landscapes and so on. , not suitable for shooting moving objects.

Artificial intelligence focusing and artificial intelligence servo focusing.

These two focusing modes are mainly used to shoot moving objects, such as games and animals.

When the camera is set with artificial intelligence focusing or artificial intelligence servo focusing, the camera will intelligently identify moving objects and make corresponding adjustments.

In the artificial intelligence focusing mode, the focusing operation is the same as single autofocus. However, if your subject starts to move, the camera will immediately find it and automatically switch to artificial intelligence servo focusing. Switching between these two modes is very fast, which ensures that you can get a clearly focused photo.

In the artificial intelligence servo focusing mode, the camera continuously focuses on moving objects to ensure the accuracy of focusing.

Especially suitable for shooting sports games that are difficult to keep accurate focus.

Manual focus

Most SLR lenses have switch keys for manual focusing and autofocus, and the words AF and MF on the lens are the switch keys for manual focusing.

In manual focus mode, you can select the focus by rotating the focus ring on the lens.

This mode is mainly used in low-light and low-contrast environments or scenes with complex graphics, because in these cases, the camera's autofocus system will fail and it is impossible to find the prepared focus.

In these cases, the best way is to focus manually, observe the scene to be shot from the viewfinder, rotate the focus ring on the lens and select the prepared focus.

Question 4: How can a SLR camera focus accurately, that is, how to control the focusing point, so that the focusing point can be aimed at which point? Option 1: Single-point focusing allows you to focus on only one point. If you cooperate with the "spot metering" mode, you can achieve very accurate focusing and exposure.

Scheme 2: Use the real-time display shooting function, and then press "Zoom in" to realize the screen display of the shooting object, with the magnification of 10 times, and then use manual focusing to achieve better results. Of course, this method does not apply to snapshots. It takes a while to make a movie.

Question 5: The basic knowledge of photography teaches you how to lock the focus with a camera. If the subject is not in the middle of the screen when the shutter release button is pressed, the subject will be out of focus because the camera will automatically set the focus and exposure for the subject in the middle of the screen. If you want to focus and expose objects that are not in the middle of the picture correctly, you need to use the "focus lock", which is a system that tells the camera where to focus.

1. Use Focus Lock

First, put the subject in the middle of the viewfinder. Then press the shutter button halfway to lock the focus on the subject. When you press this button, you will hear a click or see the focus indicator (usually a green dot) on the LCD screen light up.

When the finger remains in this position, press the shutter button halfway to lock the focus.

Hold down half the shutter and reposition the subject so that it is not in the middle of the LCD. Be careful when redrawing, neither you nor the subject will leave the original position. Finally, press the shutter button completely to take a picture. By locking the focus first, the subject can focus correctly even if it is not in the middle. Since you won't just shoot the image of the middle subject, please practice this technique, so that you can compose the composition at will and focus the subject correctly in the future.

Photos taken without focus lock function.

Put the subject in the middle and press the shutter button half-way, focus the subject and re-compose, and then press the shutter button completely to take pictures.

Question 6: How is the autofocus point of Canon 600D camera set? There is a+zoom button in the upper right corner of the camera on your right. To take a picture, press the zoom button first, and then use the main dial, which is like a gear behind the shutter. You can set the focus by pulling the wheel. It's 85 pages. You'll understand after reading it. I don't think you quite understand the point. The location shown in little red dot is the place you want to see clearly. I see.

Question 7: What is the camera focus? The focal point is the place where the object is refracted by the convex mirror of the lens and converges into a similar point opposite to the direction of the lens, which is called the focal point. In fact, it is not the focus, but the refracted image of the object is relatively small, and the vertical plane of this point can be called the focal plane. Refracted rays are clearest only when they converge on the plane where the focus is located.

Generally, the position of CCD or film is the position of focal plane. In order to shoot clearly, it is necessary to make the focal plane of CCD or film coincide with the refracted object, and the process of making the focal plane coincide is the process of adjusting the focal length.

Generally, only the lens of a SLR camera has an independent focus ring. It can be divided into auto focus and manual focus modes:

1. If any one of the digital camera and lens has a driving motor, then the automatic focusing can be realized through the electronic focusing system of the camera. Set the lens of the camera to autofocus, usually "A", aim the focusing instruction of the lens at the subject, and then press the shutter button halfway to autofocus.

2. If there is something wrong with the lens or motor of the camera, or if it can't focus automatically, you need to focus manually. Set the lens of the camera to "M" manual mode, and then focus by rotating the focus ring on the lens.

Question 8: How does Canon 70D adjust the focal length? There are three ways.

1. In AF mode, after focusing, adjust the lens focusing mode to MF mode to lock the focus and re-compose. The advantage is convenient operation, but the disadvantage is that the dynamic subject is easy to defocus.

2. Set the camera to live view mode, that is, LCD view mode, and directly click on the touch screen to select focus.

3. Free selection of 19 autofocus points to realize single-point autofocus (manual selection) and area autofocus (manual selection). The specific method is as follows

(1) Press the autofocus point selection button, and the whole autofocus area will light up in red and enter the preparation state.

(2) Use the main dial when moving the autofocus point left and right (when holding the machine horizontally).

(3) Move the autofocus point up and down with the speed control dial.

Question 9: Canon camera menu, how to set the manual focus point? I don't know if you are asking about Canon SLR cameras.

Instead of menu setting, focus is set by key selection.

I use Canon 7D and 5D2,

The way of these two machines is the same, including 60D.

On the front of the fuselage, press the button in the upper right corner. When you look at the viewfinder, you can see that the focus is all on. You can choose the focus by waving the wheel.

Canon SLR has 9-point focus, 19-point focus and 6 1 point focus.

5D2, 9 o'clock camera, only use the dial wheel on the side of the shutter to select the focus;

Focus on 7D 19. Select the thumbwheel next to the shutter on the left and right, and select the thumbwheel on the right side of the big screen on the up and down.

If you can't understand what I said, please read the instructions carefully. These instructions have detailed explanations.

Question 10: How to auto-focus when taking photos with a mobile phone 1? Just touch the key point of the photo with your hand, and the camera will automatically select it as the focus of the photo and partial metering it, so that you can get the clearest focus and the best light. Manual focusing by touching the screen has become the most effective focusing method, because most mobile phones only have autofocus function. Accordingly, because the mobile phone doesn't know where the photographer wants to focus, it can only evaluate and measure the light, which makes it difficult for the photographer to highlight what he wants to express in the photo.

2. The most important thing is to set the parameters of the mobile phone camera in advance. For example, whether to turn on the flash, whether to use autofocus, and what kind of resolution to choose. The setting of these parameters is an important prerequisite for obtaining the best image. Generally speaking, when taking landscape photos, try to shoot in natural light, so that the photos taken are more natural; If the mobile phone has a choice of photo size, try to choose a large resolution, so as to ensure that the picture has sufficient resolution.

3. In the process of shooting, try to expose the subject to natural light, such as shooting portraits in the sunset. It is best to let the subject face the sunset and never shoot against the light. If you shoot a portrait in bright sunlight, it is best not to point the lens at the sun unless you are not afraid of overexposure or can shoot a backlight effect.