Macro photography skills of SLR camera

Macro photography skills of SLR camera

Macro photography skills of SLR camera, 3 strokes to get macro photography. Taking photos is a trend of going out to play now, so what kind of technology can do good-looking work for us? Then the following are the skills of macro photography with SLR cameras and three tricks to get macro photography.

The macro photography skill of SLR camera 1 is the same as that of traditional reverse film. The exposure latitude of the photosensitive element of a digital camera is very small. Even if there is a difference of 1/3EV, the images taken are obviously different. Therefore, the accurate exposure control of the shooting scene is the key for digital cameras to shoot night scenes.

At present, many high-end digital cameras not only provide P, A, S and M exposure modes, but also provide programmed exposure modes (such as close-range mode and night scene mode). This programmed exposure mode can make appropriate exposure settings according to the type of photos taken, and generally can achieve satisfactory results. It should be noted that some digital cameras cannot take flash photography synchronously in the night exposure mode.

If P, A, S and M exposure modes are used for night shooting, it is best to use the telephoto end of the lens to measure the main color light or medium density color light in the scene, and then return to the composition state to reset the exposure and exposure compensation. When shooting at night, the ambient illumination is low and the contrast is high. The information obtained by the photosensitive element (i.e. photoelectric sensor) of a digital camera is easily affected by noise, and the details of the dark part are relatively weak. Therefore, it is best for friends with computers to refer to multi-exposure night photography: first, determine the file size and format of the shot image and the settings on the camera, then define the composition, and then take pictures at the right time when the light value is soft and bright; Keep the focal length of the camera composition unchanged. When turning on the light, use another camera to measure the light, and then set a exposure value on the digital camera (try to reduce the operation of the camera and don't change the focal length of the lens and the file size format of the image) to shoot; In the later stage, the two images are input into a computer and synthesized by image processing software. Visual post-operation can simply and conveniently obtain high-quality night scene images.

Because the lens of digital camera is small, in the case of small aperture (large F value), the point light source in the scene will form beautiful starlight in the captured image, so friends who pursue special effects may wish to give it a try. Of course, because digital cameras have the function of instant shooting and instant display; Therefore, we can compare different exposure value and find out the best exposure value.

How to focus accurately

Except a few low-end digital cameras adopt fixed focus mode, many digital cameras on the market adopt the focusing mode combining auto focus and manual focus. Each focusing method has its own characteristics and applicable objects, such as numerical adjustment manual focusing and focus ring manual focusing. Numerical adjustment Manual focusing can achieve accurate focusing by adjusting the distance in the LCD screen. This focusing method is troublesome to operate and requires high distance judgment, but it can be effective for shooting night scenes. Manual focusing of focus ring adheres to the traditional manual focusing mode, which caters to users who are used to manual focusing, but it must be confirmed by LCD screen, which is not suitable for shooting large scenes, especially night scenes.

Compared with the traditional camera autofocus control system, the digital camera autofocus control system still has many improvements. Because it is difficult for the focus sensor to focus on the scene with low contrast and low brightness accurately, when focusing on the night scene, try to focus on the bright scene, and then lock the focal length for composition. It should be noted that the change of lens focal length will affect the focusing situation, while switching AF to MF will not affect the current focusing situation.

How to choose and use white balance mode

White balance is simply to adjust the color temperature of the image to obtain accurate color reproduction. Different from traditional photography, digital cameras do not achieve white balance by adding a color filter, but only adjust the color of the whole image through a built-in program. General digital cameras have several white balance modes to choose from. Now some digital cameras also have white balance numerical adjustment, which provides photographers with more accurate white balance adjustment and broader creative space.

When shooting at night, if the white balance adjustment is not adopted, the light waves produced by floodlights decorating buildings and scenery will appear more colorful than those seen by the naked eye (because the human eye can automatically correct the color balance), and the color temperature of the sky in the evening will appear more amazing and bright on the photosensitive element. If automatic white balance adjustment is adopted, the gorgeous colors of the scene will be lost instead, and the image will be unremarkable. Of course, friends who pursue special effects can try different white balance modes or adjust the white balance value, and artificially control the image color, which will give you unexpected gains.

How to choose the size and format of an image file

Firstly, the shooting purpose and output medium are defined, and if later fine processing or printout is needed, the largest image file size is selected; If you just watch on the screen, choose the appropriate image file size according to your own screen size (generally slightly smaller than the screen size, such as 17 inch screen 1024×768, 15 inch screen/800×600). Correct settings in the early stage can bring great convenience to post-processing and viewing.

Digital cameras generally provide a variety of image file formats to choose from, such as TIFF, JPEG, FLASHPIX, GIF and so on. Each file format has its own characteristics and uses.

Considering the night scene shooting, the quality of image files and the convenience of post-processing, we generally choose JPEG file format with low compression ratio; Then determine the file size as needed; If you only spread on the Internet, you can choose a JPEG file format with high compression rate and a suitable picture file size. For shooting with high quality and limited by camera resolution, you can try to split a scene and synthesize it in the later computer.

Shooting skill

It is best to take pictures when the lights are just on in the evening, when the sky is not completely dark, and the final image has beautiful sky colors; Ambient light will make the dark part of the final image have more details. The sky changes rapidly during this time, so be sure to measure the light quickly before pressing the shutter.

Digital cameras are generally not equipped with a hood, so when shooting near the light source, you must be careful about the generation of light spots. You can use simple objects for occlusion.

Because the parallax of the head-up optical viewfinder attached to the digital camera is large, and the LCD screen has no parallax, LCD (liquid crystal display) should be selected for framing when shooting. Considering the problem of power consumption, the compromise method is to use head-up optical viewfinder to view the scene and LCD to confirm the composition. When shooting in a dark environment, the monitor can't work well, so we should use an optical viewfinder.

When shooting outside, you should bring enough batteries and mobile storage. Don't turn on the LCD for a long time to take pictures, and get used to turning off the LCD screen when not shooting.

When you go out to shoot, you must bring a tripod. Hand-held shooting will greatly affect the quality of the final image.

In the process of data access, do not suddenly pull out the memory card or turn it off, otherwise it is very likely to damage the memory and the taken image.

The image effect displayed on the LCD screen is not necessarily the final image effect. The self-set LCD brightness level and the change of ambient temperature will affect the display effect of the display screen.

The working temperature of digital camera is strictly limited, so it is not suitable for shooting in cold and high temperature environment.

Skills of macro photography with SLR camera 2 ① The subject's eyes are not in focus.

As the saying goes, "the eyes are the windows to the soul". Eyes are undoubtedly a person's soul, and if you want to shoot such a portrait with a soul, you must first ensure that the "window of the soul" is clear and sharp. When shooting portraits, it is recommended to focus on the human eye. Novices who use the entry machine can choose the central focus, focusing first and then composing. If the focus is not accurate, you can try to focus manually to solve the problem. In addition, when focusing manually, if the camera has a live view function, it can be used together to increase the success rate of manual focusing.

Eyes are the focus of portrait creation, which is very important for both the subject and the photographer!

② Red-eye phenomenon

Nowadays, many cameras have red-eye prevention function, so you can flash the light in advance when shooting, which can narrow the pupil of the subject in advance and slow down the red-eye phenomenon. When you need to use the built-in flash, you can also let the subject look at the light source for 2 seconds before shooting, so that the pupil can shrink before shooting. If the external flash can adjust the angle, it can also fill the light by flashing. In addition, using off-camera flash to keep it away from the camera lens can also reduce the possibility of red eye. Red-eye phenomenon can also be corrected later.

③ wide-angle portrait deformation

Although it is often said that the best focal length of portrait shooting is about 75- 105mm, different effects can be obtained by using wide-angle lens to create. As far as the APS-C frame fuselage commonly used by novice friends is concerned, the wide-angle focal length mostly falls within the range of 24-28mm, which is not only the starting focal length for learning landscape composition, but also the starting point for practicing wide-angle portrait shooting. When shooting people with wide-angle lens, we should pay attention to the characteristics of portrait creation in each focal segment. For example, 24-28mm is suitable for the creation of characters and scenes. If we can grasp the angle and composition, we can fully present the perspective of the scene and make the picture more tense. If you don't pay attention to the wide-angle shooting characteristics, you may also shoot a terrible image because of the deformation of the wide-angle lens.

④ The subject of shooting is not clear.

When shooting portraits, we should pay attention to properly highlighting the main body of the characters, otherwise it will easily lead to confusion in the picture, and people will not know whether the focus of this picture is people, flowers behind them or cars next to them. To overcome this problem, we should not only start with composition, but also create a shallow depth of field to highlight the main body. When you feel that the subject should blend into the background, ask him to "get out of the background" close to the camera, or use a large aperture to create a shallow depth of field effect and blur the background to make the subject clearer.

Proper manufacture of shallow depth of field can emphasize the effect of shooting subject.

⑤ unnatural light and shadow

Proper light and shadow presentation and portrait creation can create different styles of atmosphere, but if it is not used well, it will also ruin the work. Generally speaking, for beginners, soft light is easier to shoot, such as scattered light on cloudy days, which will not leave too hard light and shadow on the subject's face, while the sunshine at noon on sunny days is too strong, which is easy to cause the contrast between light and shade on the subject's face. It can be used with the soft light board to slow down some overexposure and underexposure. If you use a flash to shoot indoors, you can also use it with a soft mask to soften the light.

Five things to grasp in portrait photography

1, immediate

Capture the decisive moment of a character's expression or action. A decisive moment does not mean an accident. You can expect it to appear under certain conditions, and then you get everything else ready and press the shutter at the same time as it causes it to appear.

2. Eyes

Eye contact is an indispensable part of portrait photography. Eyes play a certain role in communication with the audience, and eye light is a more subtle detail.

It is ideal to capture people's eyes through the other end of the lens. If you shoot scenes in life with a focal length of 50mm, you may also add a sense of sight.

Step 3 color

The atmosphere conveyed by a photo will be influenced by color. If you want to take photos of happy atmosphere, bright, colorful and warm colors will be more direct and effective than low saturation, monotony and cool colors.

When you plan what colors should appear in the picture, you should avoid or even eliminate all color objects that cause interference and redundancy when you go to the shooting scene.

This is why some photos look textured, while others look a bit vulgar. If you want others to start praising your photos, it is a direct and effective choice to start with understanding colors.

4. light

The same place, the same person, you can shoot in the backlight, or you can shoot in the backlight, but it feels completely different.

I prefer shooting against the light. On the one hand, it can modify the details of people's skin, on the other hand, the picture will have an "extra layer" between people and photos because of the brilliance of the lens. Some people describe this as "air sense".

There is nothing wrong with shooting along the light. Using it well can increase the three-dimensional sense of the picture. But it should be noted that if the light hits the face close to the camera, it will make people look fat. If you want to modify your face, you should pay special attention to changing the subject's angle.

5. Scenery

Many times, there is no need to pose as a model. After all, our purpose is to shoot the characters themselves, not to emphasize a certain commodity. If you don't want to show a product, you can actually focus more on the theme.

If you spend two or three hours shooting a person, but you don't know anything about the other person after shooting, it is difficult to dig deep into the charm of this person in the photo.