Which file is the night scene of Canon camera?

Parameter setting of M file in Canon SLR scene

Aperture and shutter are used to control the "amount of light" reaching the photoreceptor. For example, if the aperture is F4 and the shutter is 1/60s, a photo can be exposed correctly. Then double the aperture to F2.8, the shutter speed only needs1120s (twice as fast), and the same amount of light can also be used. Sensitivity is the sensitivity of the photoreceptor to light.

In the same example above, the aperture F4, shutter 1/60s, ISO 100, the photo exposure is normal. So assuming that the aperture value is still F4, the shutter speed is increased to1120s. At this time, the amount of light reaching the photoreceptor is reduced by half. In order to get accurate exposure photos, it is necessary to improve the sensitivity of the photoreceptor to light, that is, the ISO is increased to 200 (the sensitivity to light is doubled).

In addition, the standard aperture values are given: f 1, f 1.4, f2, f2.8, f4, f5.6, f8, f1,f 16, f22, f32 and f44. The larger the value, the larger the aperture. The light input of each gear is 1/2 of the previous gear. As for the numerical value between the shutter and the ISO file, it is easy to understand that the relationship between them can be seen only from the numerical value:

The light input of 1/60s is twice that of1/20s and half that of 1/30s. Green O 100 is 1/2 for ISO200 sensitivity and 1/4 for ISO400 sensitivity.

Take a picture of a flower outside on a sunny day, and the scene is darker. The shutter1125s, aperture F2.8, and sensitivity ISO 100.

Take a picture of the scenery outside on a sunny day, and the scenery is deeper. Shutter1125s, aperture 4, sensitivity ISO 100.

Shooting night scene, shutter115s, aperture 1.8, sensitivity ISO200.

Shooting action, shutter 1/500s, aperture 2.4, sensitivity ISO 100.

Using the principle of depth of field to achieve the effect of clear object and blurred background. Depth of field refers to the range of clear images obtained by focusing the lens accurately on a certain place at a certain moment. Simply put, the greater the depth of field, the smaller the range of image blur, and the smaller the depth of field, the larger the range of image blur.

Aperture, focal length and distance are three basic factors that affect the depth of field.

Aperture is inversely proportional to depth of field. The larger the aperture, the smaller the depth of field. The smaller the aperture, the greater the depth of field;

The distance is proportional to the depth of field, and the greater the distance, the greater the depth of field; The smaller the camera distance, the smaller the depth of field. The focal length is inversely proportional to the depth of field, and the longer the focal length, the smaller the depth of field; The shorter the focal length, the greater the depth of field.

Traditional cameras use a similar visual ranging method to achieve autofocus. The camera emits an infrared ray (or other rays), determines the distance of the subject according to the reflection of the subject, and then adjusts the lens combination according to the measurement result to realize automatic focusing.

This automatic focusing method-direct, fast, easy to realize and low cost-sometimes makes mistakes (when there is something else between the camera and the subject, such as glass, or the light is insufficient, automatic focusing cannot be realized), and the accuracy is poor. Today's high-end cameras generally don't use this method. Because the camera actively emits rays, it is called active, and because it is actually only ranging, it is also called non-TTL because it does not judge whether coking is correct through the actual imaging of the lens.

Compared with active autofocus, passive autofocus was developed later, that is, judging whether coking is correct according to the actual imaging of the lens. The basis of judgment is generally contrast detection, and the specific principle is quite complicated.

Because this method is realized by lens imaging, it is called TTL autofocus. It is precisely because this autofocus method is based on lens imaging, which has high focusing accuracy and low error rate, but the technology is complex, the speed is slow (except for the advanced autofocus lens using ultrasonic motor) and the cost is high.

There are many subjects for night shooting, such as car tracks, star tracks, light paintings, scenery, night portraits and so on. The specific parameter setting needs to be determined according to the ambient light, shooting effect and theme.

1, the shooting mode can choose aperture priority, M-file or door B as required, in which door B is generally selected for light painting and fireworks.

2. Under the condition of ensuring the image quality, the ISO should be as low as possible (100 or 200), and too high ISO will produce noise.

3. The shutter speed also needs to be determined according to the ambient light and the subject. For example, the shutter speed must be slow when shooting car tracks, while the portrait at night needs a higher shutter speed.

4. The aperture size should be selected according to the required depth of field. For shallow depth of field, large aperture should be used to highlight details, such as shooting night portraits with large spots, while slow shutter should choose small aperture.

5. You don't have to use automatic white balance to shoot night scenes. In many cases, changing the white balance can make photos bring different effects. Cold-white balance will appear sci-fi, while warm-white balance will appear lively and prosperous.

Precautions for night shooting:

1, don't shoot the night scene too late, it's better when the sun goes down and the lights are on, because the sky is not dead and dark at this time.

2. Avoid too small aperture. Try to choose F8- 13. If the aperture is too small, the image quality will be degraded.

3. The portrait at night can use an external flash as needed, and the shutter speed is too slow, which may cause paste due to the photographer's movement.

Finally, a stable tripod is very important for shooting night scenes.

What mode does Canon SLR take pictures at night?

Taking pictures at night is suitable for night scene mode.

The key points of Canon's night shooting skills are as follows:

1, using negative exposure compensation. When shooting night scenes, the reasonable exposure calculated by the camera is not necessarily a good exposure parameter. Photographers need to use their eyes to determine the exposure according to the actual effect, and use negative exposure compensation to shoot the brightness similar to the night scene, so that light and natural light can reach a good balance.

2. flashlight. It will be convenient to have a small flashlight when shooting outdoors. It has a wide range of uses. It can be used to determine the position of the camera button, and it can also be used to illuminate the shooting scene to see if there is anything left behind.

3. Correct use of cable release. In order to suppress the camera shake when shooting night scenes, it is suggested to use the cable to release when pressing the shutter button instead of touching the camera directly. If there is no cable release at hand, you can also use the self-timer function instead.

4. Select Av (Aperture Priority Automatic Exposure) mode or manual exposure mode. The shooting mode can be Av mode or manual exposure mode. When using Av mode, exposure compensation can be used to shoot scenes near night.

Extended data:

Matters needing attention

1, image sensor area

The area of the image sensor is the main factor that directly determines the imaging quality. Whether it is CCD or CMOS, the larger the area, the better.

2. Pixel size

At present, the mainstream SLR digital camera should be more than 654.38+million pixels, but the bigger the pixel, the better. When the area of the internal image sensor is constant, the larger the pixel, the worse the imaging quality.

Step 3: lens

There are two ways to sell SLR digital cameras: one is to sell the body separately, and users need to match their own lenses; The other is a kit, which can be matched with a lens outside the fuselage, but the matching lens grade is not too high, which is a cheaper product, but the kit is cheaper than buying the same fuselage and lens separately, which is more affordable and suitable for users with insufficient funds.

How to adjust the specific parameters of Canon SLR when shooting night scenes in AV mode?

When shooting night scenes with Canon SLR, you need to get a clear night scene with depth of field.

1. Camera location. Putting the camera on a tripod or other stable place is the basis for obtaining clear night photos. Because the light at night is much darker than during the day, if you want to achieve normal exposure (even if you set high iso exposure), you need to open the camera shutter for a long time, so you can't shoot with a hand-held camera. Usually, when the shutter speed of the camera is slower than1125 seconds, the shooting mode of the hand-held camera will easily lead to different degrees of blur in the photos.

Shutter damping. When the camera is placed on a tripod or other stable place to shoot, in order to avoid the photo confusion caused by the vibration caused by pressing the shutter by hand, the shutter is usually operated by releasing the cable; If there is no "cable release", you can use the "delayed shooting" function of the shutter instead, and it is better to set the delay time above 5 seconds.

Iso sensitivity. Because the camera has been placed on a tripod or other stable place, the iso exposure setting should be lower. Shooting at night is mostly in low light conditions, and photos are prone to produce too much noise. If the iso exposure is set higher, the noise generated by the photo will be more obvious, which will greatly reduce the delicate feeling of the photo.

2. Aperture setting. In fact, the factors that affect the depth of field are not only the aperture value, but also the length of focal length and the distance from the subject. As far as the aperture size is concerned, in the AV priority shooting mode, the aperture value can be freely set to 8~ 16, and an ideal large depth of field effect can be obtained.

Supplementary answer:

When there is no tripod, you can put the camera on a flat place such as a table, stool and wall. However, you must pad the camera with hard objects to avoid vibration when the camera shutter is opened and closed, and hold the camera shoulder strap with one hand to prevent the camera from accidentally falling.

High iso exposure can't replace the tripod needed for night photography, and it will also multiply the noise of photos, obviously affecting the visual effect of photos.

Precautions for Canon Camera Night Scene Shooting

Lead: Because of the colorful light sources at night, it is a subject that photographers like to shoot very much. Next, I'll bring you the precautions for shooting at night with Canon cameras. Let's go and have a look!

Precautions for Canon Camera Night Scene Shooting

Camera: EOS500D lens: EF-S 18-55mmf/3.5-5.6IS.

Program automatic exposure (F3.5, 1/30 seconds) /ISO 1600/ white balance: sunlight.

I happened to see the beautiful scenery by the roadside. The orange light source was not compensated when shooting, and the color tone seen in front of us was truly reproduced. In addition, in order to avoid hand shake when shooting with a hand-held camera, a lens with hand shake compensation mechanism (IS) is used while improving the ISO sensitivity of the camera.

Set the shooting mode of Canon camera to program automatic exposure P file-to ensure the preparation for night exposure.

When shooting at night, accurate exposure is a big problem. If you want to get accurate exposure value night shots in most cases, it is the simplest and most practical to choose the P file of Canon camera-the automatic exposure function of the program. Because the automatic exposure mode of the program can be judged automatically according to the surrounding light, you can also adjust the different aperture and shutter combinations in the P file according to your own needs. If it's your first time to shoot a night scene, it's recommended to shoot it with P file first.

In the shooting menu, set the sensitivity to ISO1600-try to increase the shutter speed.

The lights at night are charming and beautiful. However, compared with sufficient light during the day, special attention should be paid to the problem of anti-shake when shooting at night. It IS the first choice to use a lens with IS anti-shake function when shooting. However, just in case, in order to ensure the shooting quality, when shooting a handheld without a tripod, we should try to ensure a higher shutter speed. Photographers can appropriately increase the ISO setting according to the different light of the shooting scene until the appropriate shutter speed is obtained.

Generally speaking, the automatic white balance function of Canon camera is very accurate, but in order to highlight the atmosphere of night shooting environment, it will be more convenient to use the preset white balance in the camera. You can also adjust the white balance settings consciously and manually according to your different shooting ideas.

Hand-held shooting at night should pay special attention to the stability of shooting posture.

When shooting at night, try to clamp your arms as much as possible, pay attention to breathing smoothly, and ensure the stability of shooting to the maximum extent. Of course, it is best to have a temporary table support or a fixed object to rely on.

Matters needing attention in shooting night scenes with tripod.

If you have higher requirements for the stability of night shooting, it is necessary to use a tripod in night shooting. When choosing a tripod, its size and weight should match the camera. In order to further maintain stability, you can also hang a backpack on the central axis of the tripod when shooting. For camera settings, you can use the A and B doors of the camera, and use the self-timer mode or wired release.

Camera: EOS5DMarkII lens: EF24- 105mmf/4LISUSM.

B-door exposure (F8, 2 seconds) /ISO 100/ White balance: daylight

When shooting fireworks, it is more convenient to use a zoom lens to compose a picture.

With a tripod, the camera can be equipped with a B door.

In order to ensure the stability of shooting, it is also very necessary to use cable playback.

Before setting off fireworks, you can pay attention to the location of fireworks in advance.

When shooting fireworks, you can focus on the position where the fireworks appear in advance. When shooting distant fireworks, the focus is basically set to the infinity of the lens manually. If you want to focus more accurately, you can use real-time display to zoom in and confirm the focus position.

Turn off "long exposure noise reduction function" when shooting fireworks.

Although turning on the noise reduction function can reduce the noise, the processing time will be longer and some shutter opportunities for shooting fireworks will be lost. Therefore, before shooting, you should confirm the function settings from the menu to ensure that the "Long Exposure Noise Reduction Function" is turned off. Generally speaking, "long exposure noise reduction function" is a very effective function in night photography, but when shooting fireworks, you should choose the camera setting that gives priority to shutter timing.