Is there any mobile phone or software that can locate and capture? For example, if you enter the wrong password, it will be automatically grabbed.

A travel camera is a must. Popularize a little knowledge and make our moment better. Here are some commonly used shooting techniques: 30 tips for digital camera shooting. Always remember a proverb in photography: first-class photography depends on creativity, second-rate photography depends on technology, and third-rate photography depends on equipment. Photos that meet the following three criteria are excellent works. Tip 1: Let your photos have a clear and distinct theme, (Is it a person, a still life or a thing? You need to be clear, not ambiguous, not comprehensive. The second trick: a good photo must attract the attention of the subject. You need the audience to pay attention to your subject at once, because this subject is the core of your expression. The third trick: make your photos more concise, and all elements that can't set off your subject or even distract your attention should be compressed or excluded. Digital photography skills of people: Many photographers in the world are famous for taking pictures of people. In their photos, you can feel that the subject is "telling" a story for you or expressing an emotion. Why do we often see that the photos around us are not infectious? This is the reason in many cases. Whether it is a single portrait or a multi-person shooting, before we visualize the characters (or tell stories), let's take a look at the common mistakes and try to correct them. 1 single portrait 1) Simple method to prevent portrait deformation: Some top photographers deliberately deform portraits when taking pictures of great men, which is an advanced artistic expression. For mass photography, portrait deformation is a low-level and fatal mistake. The fourth measure: the simple way to keep the portrait undistorted is to try to keep the distance from the position of the person being photographed, and try not to use a wide-angle lens. Portrait photos are suitable for shooting with 80-90mm lens. 2) How to get a shallow depth of field to highlight the characters: If the scene around the characters can't help or set off the subject's "storytelling", we will try to cut or blur the background. The fifth measure: The way to get a shallow depth of field (blurring the subject background) is to use a large aperture and a long focal length as much as possible, and (if possible) let the characters stand as far away from the background as possible. 3) Make your subjects more natural "When I photograph someone, I always want to avoid the way they are photographed." Famous photographer john long Gard said. Obviously, it is very important for the character to relax during filming. People will show their feelings more naturally when they relax. If it is not a snap shot (or a sneak shot), people in life are usually uncomfortable (unnatural) in front of the camera and need communication to make him/her forget to shoot. 4) Pose essentials: With the help of environmental props and postures, it is beneficial to make the image more vivid and not rigid. Step 6: Make the subject stand, bend, lean, sit or lie down according to the scene. The seventh measure: pay attention to the flexible use of the overall posture, so that the subjects can move their hands, such as touching their heads, pulling their hair, caressing their faces, taking off their cheeks, pressing their mouths, touching their necks, pulling their skirts, pulling their arms, resting their hips, and pulling their feet (such as pulling shoelaces). In short, hand movements can be explored freely all over the body, and the core is to keep natural and help express emotions. In addition, you can also hold props, such as hats, glasses, scarves, books, cigarettes, football, a flower and so on. , to activate photos and make images more vivid. Tip 8: When shooting a single portrait with POSE, pay special attention to the head and shoulders of the subject. Usually, the head and body should not be in a straight line, and the shoulders and feet should not be parallel. The ninth trick: When shooting a portrait of a single person, the photographer keeps a distance from the subject during the day to avoid the deformation of the character. In composition, the diagonal way is usually the safest. 10 trick: If the subject is really difficult to pose, and the dress or figure is not good-looking, please try to take a half-length photo or a big photo. The expression of the subject is the only thing you have to catch. 5) Portrait shooting in special light (scorching sun, night, bright background)No. 1 1: When shooting in strong sunlight, you need to pay attention to blocking the object to avoid unnatural eyes, and use more side light to make the object sharp; Try to shoot people with less backlight. The sunlight on the lens may degrade the optical elements, thus damaging the image effect. When backlight shooting is needed, just block the shadow on the lens and don't let the blocked objects (such as hats, palms, etc.). ) enter the picture. It is difficult to take portraits at night. Bad PP is either too dark to see clearly, or the background is too bright and dark because of blunt flash. For beginners, simplicity can alleviate contradictions from three aspects. Measures 12: first, improve the sensitivity and turn off the flash (flash is not mandatory, except that the camera's flash system is very clever); Secondly, let the subject keep his posture as still as possible in a bright environment (such as under a street lamp); Finally, use a slow shutter (preferably a tripod) to make the exposure sufficient for imaging. Measures 13: the background light is generally supplemented by a flash to make the foreground portrait brighter. If you can use a scattering flash, the effect will be softer. When taking indoor photos, set the exposure to a bright background. If the flash is not turned on, the imaging subject will be very dark. If only the subject is exposed and the flash is turned on, the subject background will also be underexposed; In order to achieve a natural effect, we can first measure the exposure of the bright background outside the window as1125 and f8, and then use the f8 scattering flash to balance the indoor and outdoor exposure in the main body (shoulder position). Snapshots and multiplayer photos 1. Why are snapshots more attractive? People's expressions in a natural (or casual) state are the most authentic. In the eyes of photographers, some people call it "reality". Many excellent photographic works are completed by snapping, whether it is taken by one person or by many people. In real life, many photographers are confused and have nothing to shoot. That's because novices haven't really opened their hearts and put their cameras around their lives. 14 trick: Go to the street, theme activity place or emergency scene, capture the expressions and relationships of people inside and outside the incident site, be careful not to flash, shoot quietly, and use telephoto lenses more, so that the ambush shooting effect is better. The speed of snapshot can be trained, but touching works can be shot. The real meaning lies in consciousness, feeling and discovery. Natural posture and creative modeling 1) In daily life, it is inevitable for friends to get together, relatives to get together, children to grow up, take photos to commemorate and record the atmosphere. This conscious shooting activity makes the subject pose naturally. The first 15 trick: taking a group photo in life, posing naturally and shooting the atmosphere is not only your primary consideration, but also the relationship between people should be reflected incisively and vividly. 2) Except for the natural POSE, all dramatic and creative pose photos can get a refreshing and brand-new effect. Successful creative attitude is inspired by understanding and creating life. No model can teach you to make creative POSE, but you can try more. Tourist scenery photography skills: There is no denying that some people buy digital cameras just because they take pictures of tourist scenery. But the facts tell us that the scenery photos taken by quite a few people are unremarkable, and it is even more difficult to collect them. A very core reason-which is also a common problem of most people-is that he is lost in the dazzling scenery and can't concentrate on a scene or scenery, which makes him feel unconscious (or unable to grasp), which increases the difficulty of designing the station (camera positioning) and picture composition to highlight the artistic conception or theme of this scene. 1. What moved you and how did you express it? Chris? Steele Perkins usually doesn't shoot "romantic works". Coincidentally, British photographer Joe? Cornwall also advocates making the landscape more thoughtful. He said: "Only through extra efforts can we go beyond the actual content of photography and convey emotion, vitality and passion, even metaphor and symbolism." Issue 16: Don't try to make all the scenery big and complete. Be sure to shoot a subject. If other scenery can't be compared, compress or exclude it. Feel the subject silently and summarize it with an adjective. For example: take a picture of a strong bridge, an ancient village, a quiet lake, a sultry food market, a sad mother, a lazy dog ... The importance of shooting angle (camera positioning) in landscape photography has a mantra: "Good photos come out, etc." Through professionalism, we can see how important the angle (camera positioning) is for landscape photography. There are usually three angles, the most is flat feet, followed by backhand and prone hitting. 17 trick: the choice of angle is used to highlight the theme, such as the "adjective" mentioned above. If this angle can best reflect the theme (artistic conception) you express, then use this angle, no matter how far you have to go. For example, when shooting a waterfall, the three angles clearly show the surging (upside down), width (right angle) and magnificence (micro-overhead) of the waterfall. Introduce several typical compositions. Composition largely determines the realization of the shooting theme and the success or failure of the work. Composition refers to how to arrange people, scenes and things in the picture to obtain the best layout, the method of combining images and the sum of all means of prompting images. For beginners, this sounds quite complicated. Here we briefly explain the basic composition. No.65438 +08: On the premise of determining the theme and expressing the artistic conception, there are usually several methods: herringbone, triangle, oblique triangle, vertical, diagonal, horizontal and bending. 19 trick: the proper use of the golden section. For beginners, it is essential to learn and apply the golden section technology. Many textbooks call the golden section composition "three-three intersection method", and it is usually practical and perfect to express the topic at the intersection with "golden section point". Most of the fool cameras are central autofocus imaging, so how to highlight the foreground (such as portrait) in the golden section position becomes a difficult problem. This requires the application of semi-shutter technology (in fact, most fool machine operation manuals have this practical technology explained. The 20th trick: first aim at the foreground with the center of the picture (let the camera focus on the subject you want to shoot), then press the shutter for half a minute, then move the lens, put the subject on your imaginary golden section, and finally press the shutter completely to finish shooting. More suitable position and zoom "Few photographers will fully consider the placement of the camera. In fact, only when the camera is positioned accurately can a good composition be taken. In any given perspective, it is necessary to determine whether the plane should be left or right, front or back, slightly higher or slightly lower. All this will affect the relationship between the subjects in the scene, the obvious proportion and whether it is within the effective depth of field. " "With the development of photography technology, the performance of zoom lenses is getting better and better, and you can't ignore their creative potential. But for photographers, it is very important to understand the influence of different focal lengths on the visual relationship, proportion and depth of field between subjects. Generally speaking, a wide-angle lens will widen the space, and a long lens will compress the space, but this is a misleading generalization. Like art? Wolf, Golan? Rochel and Jim? Braden Berg, young? Arthur Bertrand and Neil? Photographers like Ben Wei took unforgettable scenery photos with a 35mm camera. For landscape photography, it is usually a mistake to choose an extreme lens. Wide-angle, standard and short telephoto lenses are usually enough. " Some people say that photography is the knowledge of dealing with light, which shows how important light is for perfect imaging. Aside from the importance of theme and composition (content layout), imaging quality is what most people want to improve. The factors that determine the imaging quality are nothing more than ambient light, the grade of camera and lens, and the photographer's operation skills. As you know, as the general public, in order to complete timely and high-quality shooting without artificial lighting, cameras or lenses, operational skills are becoming more and more important. I have to admit, it is almost impossible for a stupid digital camera to complete good quality imaging under difficult ambient light. Happily, most of today's entry-level digital cameras also have semi-manual functions. Those technologies that help to improve the imaging quality, such as aperture, shutter, exposure compensation EV, ISO sensitivity and white balance, can finally make your photos lifelike. For beginners of photography, the above skills (concepts) are inevitably somewhat unfamiliar. Here, we will briefly explain how "aperture", "shutter", "exposure compensation EV", "ISO sensitivity" and "white balance" affect photo imaging: we compare "imaging" to "water injection", the aperture size is like the size of a water pipe, "shutter" is the irrigation time, "exposure compensation" underexposure is insufficient irrigation, and overexposure is excessive irrigation. When taking pictures, you can adjust the aperture, shutter, exposure compensation EV, ISO sensitivity and other variables. You can also put a bucket of water, and you can adjust the size of the water pipe, the length of time, the size of the clip and the depth of the bucket. "White balance" control is to adjust the image so that the color of the photos taken under various light conditions is exactly the same as the color of the scenery seen by human eyes. Digital cameras generally provide automatic white balance and several modes such as sunny day, cloudy day, incandescent lamp and fluorescent lamp. Novices can choose the corresponding white balance mode according to the light environment. If it is simpler, choose the automatic white balance mode completely. Common outdoor difficult light operation skills: 1, shooting in the hot sun: usually it is not suitable to take portraits and panoramic photos in this case, because the light is too bright, macro shooting is a very good opportunity. Measure 2 1: It is suggested to shoot the scenery with a small aperture in the scorching sun, reduce the exposure compensation 1-2, reduce the sensitivity, and adjust the white balance in the sunny sky mode. It is better to have a hood. 2. Night scene skills The 22nd trick: A stable tripod is essential. Try to focus on the bright scene manually, lock the focus for composition after focusing, and use less automatic white balance. Try to use "daytime" or "outdoor" mode to force no flash, and it is safer to use aperture priority exposure. It would be better if there was a range hood. 3. The 23rd trick of snow scene skill: manually adjust the white balance on white objects, and strengthen exposure compensation according to white areas 1-2. If a UV mirror is installed, blue color can be avoided. 4. Rainy day skills: Overexposure often occurs when shooting in rainy days. Generally, the method of reducing exposure is adopted to avoid the gloomy picture. Measure 24: It is generally better to adopt a large aperture and high sensitivity, and the shutter speed is 1/30 seconds to 1/60 seconds, which can emphasize the dynamics when it rains; Choose gray walls, green trees, mountains, dark buildings, caves and other objects as the background, and the backlight or sidelight shooting effect is better. 5. Operation skills of common indoor ambient light: Due to the limitation of lighting, the brightness of indoor light is much lower than that of outdoor light. The difference of indoor light source and color temperature, the entrance of natural light, the reflection of indoor walls and the presence or absence of obstructions in lighting will directly affect the nature of indoor light and make it more complicated. 6. Other skills of landscape photography: 1) Use of tripod "You can take landscape photos without a tripod, but most successful landscape photos are taken with a tripod. It is an important basic skill to skillfully use the tripod and ensure that it remains stable, safe and correct in the wind. " 2) Cognition of the effect of exposure control "Most photographers have mastered the setting and focusing of shutter speed and aperture, but they have never fully understood and understood one thing: aperture and shutter not only allow you to take clear photos with correct exposure, but also are important creative tools. In landscape photography, it is necessary to test and explore the creative potential of aperture, shutter and focal length control to build confidence and enhance understanding. " 3) Another way to take pictures of places of interest The 25th trick: Take unusual pictures of places of interest and let them set off your story (theme). Sports and close-up photography skills Proper use of shutter can make moving images more appealing. Most photographers fully show the sense of movement through images, prompting the beauty of strength, speed and life. Close-up is an artistic expression in photography. Use parts to convey information and details to explain the theme. The difficulty lies in the topic selection. People with quick thinking and action can use this simple technique to render the theme, arouse association and get more excellent works. Dynamic photos are the art of shutter. Fast shutter use: high-speed shutter solidification movement 26 th trick: take more tense sports photos. It is suggested to take an image at the climax of the action, pay attention to the expression of the subject (character), and the light should be bright. Usually, those high-speed moving scenes with unclear features are suitable for fast shutter. Use a slow shutter: A slow shutter produces motion. The 27th trick: Use the slow shutter combined with the follow-up shooting technique or zoom shooting technique to make the moving subject clear on the screen, and the moving subject can form a strong contrast through the line crossing on the background or the radial lines around the subject. The 28th trick of digital macro shooting: When shooting, carefully select the position of the focal plane, put the details that need to be shown on a plane as much as possible, and make this plane parallel to the back of the camera. Twenty-ninth trick: Control the direction and quality of light, and try to avoid direct sunlight when shooting macro, which will easily lead to Gao Fancha and erase all details. The 30 th trick of telephoto close-range shooting skills: use a high shutter speed (preferably higher than 1/200 seconds) when shooting, and use a tripod when the light is insufficient. If the subjects are animals and people, it is necessary to highlight their close-up expressions. If the subject is a still life and highlights its distinctive features, such as a mountain illuminated by morning light, we will shoot the part of it illuminated by morning light.