Basic camera knowledge tutorial
The following is a tutorial on basic camera knowledge:
* * I. Cameras by category **
1. * * Mini PC (Fixed lens camera/body lens all-in-one)**
- This was a camera with a non-changeable lens. Originally, the term 'ADC' was used to refer to all digital cameras. However, with the mainstream use of cameras with changeable lenses, cameras with non-changeable lenses were more commonly known as mini DCs.
2. * * Interchangeable lens camera (such as DSLR, micro camera, etc.)**
- Single-lens reflex camera: It has a complex optical framing system. Its basic structure includes a lens, aperture, shutter, sensor (film or digital sensor), and viewfinder.
- * * Micro-camera **: The size is relatively small. It is similar to an DSLR in function, but the structure is simplified. For example, the mirror and other components are removed.
* * 2. Basic structure of the camera **
1. * * Shot **
- The lens could adjust the focal length and field of view of the camera. Different focal lengths were suitable for different shooting scenes. For example, a wide-angle lens (with a short focal length) was suitable for shooting scenery and could obtain a wider picture; a telephoto lens (with a long focal length) was suitable for shooting distant objects or close-ups.
2. * * Aperture **
- Control the amount of light entering the camera. The aperture size is represented by the F value. The smaller the F value, the larger the aperture, the more light entering, and the more obvious the background blurring effect. Conversely, the larger the F value, the smaller the aperture, the less light entering, and the greater the depth of field of the picture (the range where the front and back scenes are clear).
3. * * Shutter **
- It determines how long the light enters the camera. A fast shutter speed could freeze fast-moving objects and avoid blurring; a slow shutter speed could cause moving objects to blur, but in low-light environments, more light could enter the camera.
4. * * Light-sensitive element (film or digital sensor)**
- It was a key component of the camera. Film was the light-sensitive material used in traditional cameras, while digital sensors were used in digital cameras to convert light into digital signals. The size of the sensor would affect the image quality. Generally speaking, a larger sensor could obtain better image quality.
5. * * View finder **
- It was used to observe the subject. The optical viewfinder of a single-lens reflex camera allowed the photographer to see the same image as the lens through optical components such as a mirror and a pentaprism. Some digital cameras also had an electronic viewfinder that displayed the image through an electronic display screen.
* * 3. Techniques of using the camera **
1. * * Focus *
- Precise focus was the key to taking clear photos. Some cameras may encounter difficulties when focusing. For example, the Fuji XT5 may have problems with focusing and easy to lose focus. Different cameras had different focus modes. The most common ones were autofocus (AFF) and manual focus (MT). Automatic focus was suitable for fast shooting, but it might not be accurate in some complex scenes. Manual focus required more experience, but it could control the focus more accurately.
2. * * Exposed **
- The exposure was determined by the aperture, shutter speed, and sensitivity. If the photo is too bright (overexposed), you can reduce the aperture, increase the shutter speed, or lower the USB. If the photo is too dark (underexposed), you can increase the aperture, decrease the shutter speed, or increase the USB. However, it was important to note that if the IQ was too high, it might cause noise and affect the image quality.
3. * * Shooting Mode **
- Cameras usually had a variety of shooting modes, such as automatic mode, programmed automatic mode (P), aperture priority mode (A or Av), shutter priority mode (S or Tv), and manual mode (M).
- Automatic mode is suitable for beginners, and the camera automatically sets all parameters. In program automatic mode, the camera automatically sets the aperture and shutter speed, but other parameters can be adjusted. In aperture priority mode, the user can manually set the aperture size, and the camera automatically adjust the shutter speed. Shutter priority mode is the opposite. The user sets the shutter speed, and the camera automatically adjust the aperture. Manual mode requires the user to set all parameters such as aperture, shutter speed, and so on. It is suitable for experienced photographers.
* * 4. Different types of camera features and applicable scenarios **
1. * * Fuji XT5 **
- [Pros: There are a lot of filter, the photos are very realistic, and the camera looks good.]
- Disadvantages: Although the screen can be folded, it cannot be folded into selfie mode. It is difficult to focus and easy to lose focus. It is not suitable for novices.
- [Usage: It is suitable for people who know the camera or have a photography partner who knows the industry. It is used to take photos with a strong artistic sense.]
2. * * Canon G7 X3 **
-
Daheng camera tutorial
The following is a tutorial for Daheng cameras: 1. ** Model Description **: If you are using a Daheng Mercury series camera such as the amer- 139 - 210U3C, you can find the corresponding camera driver in the download center of Daheng's official website-software download. 2. ** Driver installation **: - After finding the corresponding driver, he used the foolproof installation method. However, if the camera connection device (such as the Xavier) uses the ARMv8 architecture, you need to go to: imaging.com/Software/index.aspx? nodeid = 304 This download link chooses a specific version to download. - Before downloading, you should check whether the Xavier environment meets the configuration of the Daheng camera driver installation. First check the version of g++(use the g++ - v command), and it should meet version 11; then check the version of glibc1 (use the getconf GnU_LIBG_VERsion command), and it should also meet the version requirements. If they were not satisfied, they would have to upgrade or install them. - You also need to check if Qt4 is installed on Xavier. Xavier doesn't come with Qt4 after flashing. You need to download and install it yourself. The download instruction is sudo apt - get install qt4- default. After these checks, the driver can be installed. 3. ** Start software **: - After downloading the Daheng Galaxy Reader, connect the camera and lens to the computer for power supply (the yellow indicator light is on at this time). - He clicked to refresh the device list, double-clicked the detected device, and clicked the capture button to capture the image. He could also continue with the development of the software and image processing. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
Basic Knowledge of Metaphysical Knowledge
He recommended a few good novels. " Heaven's Path Forum " was a fantasy novel written by me. After Luochuan transmigrated, he found that the secret realms opened by the Heaven's Path Forum were very familiar. For example, the martial arts and martial arts worlds. He originally thought that it was a book similar to a cultivation chat group, but it turned out to be in the language of ten thousand worlds. It could be used to cultivate from a low-level martial arts realm to a high-level martial arts realm. It was just that the chapters were a little short. " Yearning for Life " was Hu Daodao's work. Su Bai transmigrated to become an intern director and finally became a big shot in the entertainment industry. There were many characters and the information about them was very detailed. " Dark Arts Immortal Gate " was a Xianxia novel written by Yin Wei. The little beggar relied on the jade pendant and Taisui to embark on the path of immortal cultivation. He went from the sects of the Tang Empire to the overseas of China. It had a unique style, such as the summoning of beasts and magic treasures. The moves were very powerful. " It's clearly a water shadow, but it doesn't even know how to use water escape." It was a light novel written by the Sunset Songster. It was very interesting when the main character was hunted down and ridiculed. "Douluo: Travelling through Qian Xun Ji, Megaturing Bibi Dong", composed by Elegant Ending, Qian Xun Ji traveled through Douluo Continent, bound to the system to conquer the continent, with many characters and wonderful plots. While waiting for the TV series, you can also click on the link below to read the classic original work of "Dafeng Nightwatchman"!
Basic piano tutorial for children
The following are some key points related to the piano basics for children: - ** Writing of teaching materials **: The kindergarten song piano accompaniment course was written by the pre-school education department of Central China Normal University and the teachers of many normal universities. The writing process took nearly one and a half years. It also absorbed the teaching case analysis of excellent kindergarten teachers and combined theory with practice. There was also a book titled "Excellent Teaching Materials for Teacher Education, Pre-school Education Professional Series, Basic Course on Playing and Singing: Children's Songs", which covered the dominant seventh chord in major and the practice of chords in minor and major keys. - ** Teaching Method ** - ** Cultivate imagination **: The piano performance is full of imagination. For children, teachers or parents should cultivate their thinking and imagination when they are learning. For example, the piano could be compared to a friend who could "sing" beautiful songs, attracting children with beautiful songs, and praising and affirming them when the children had positive performance. As the technical practice increased, in order to avoid dullness affecting enthusiasm, it was necessary to pay attention to mobilizing students 'enthusiasm and maintain interest in learning. - ** Finger exercise **: 10 - 15 minutes of "Finger gymnastics" every day. The content of the exercise varies slightly every week, but the purpose is to strengthen the support of the fingers. It can let the child imagine the fingers as the toes of a ballerina. At the same time, it is necessary to pay attention to the support of the third joint of the fingers. The child can first clench his fist and see the bulge of the third joint before slowly opening it into a semicircle. The four "small peaks" on the palm should be clear and the "highest peak" of the hand shape. - ** Understanding the Connotation of Music **: For titled music, you can use the title explanation to help children understand the meaning. For example,"The Cigarette Auctioneer" is bargaining with two people, and "The Dance of Four Little Swans" is showing a cheerful mood; For untitled music, you can guide and analyze the work by understanding the background of the composition, observing the melody line (up to express high emotions, down to the opposite, skipping and small lines are mostly happy and lively, the length of the melody line is mostly lyrical, etc.) and the expression terms on the score to experience the emotions of the work. - ** Teaching specific songs **: For example, Little Red Riding Hood, you have to pay attention to the alignment of the two hands. The music has a total of 24 bars, and you can divide the sentences according to different bars. The right hand has to play coherently, and the left hand is a skipping accompaniment. The corresponding relationship between the notes of the right hand and the left hand in different bars has its own characteristics. For example, Take Me Hand has specific fingering techniques for the right hand and the left hand (right hand: 423742, left hand: 37742414). In addition, in the accompaniment of children's songs, there were problems such as left and right hand disharmony, air beat and long beat melody plus flowers, how to accompany words, the choice of accompaniment type, the combination of playing and singing, and how to deal with other tunes. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
Video camera basics tutorial
The following is the basic tutorial for video cameras: 1. ** Shooting stability ** - It is best to hold the camera with both hands to maintain stability, or use something to support it, or use a camera stand. Try to avoid shooting while walking, because the stability of the image is the primary condition for dynamic photography. 2. ** Fixed Shot ** - After the camera was aimed at the target, it was fixed at a point and shot without zooming in or zooming out or sweeping up and down. When shooting, set the image size before turning on the camera to record. - Usually, the camera was mainly fixed, and the zooming action was reduced to avoid affecting the stability of the image. You can change the size, angle, and position of the shot (such as the side, high, low, etc.) to enrich the image. For example, when shooting a panoramic view, the camera should be farther away from the target, and when shooting a partial shot, the camera should be closer to the target. - It was to avoid using the zoom lens to continuously zoom in and out while standing at a fixed point without a tripod. Long-distance zooming could easily cause the image to shake. However, with the right technique and timing, the zoom lens could still be used. 3. ** Video recorder related settings (This is the first time the new video recorder is being used)** - You need to set an administrative password to activate it. The password should be a combination of 8 - 16 digits, lower-case letters, upper-case letters, or two or more special characters. It should not include the username (such as admin). It can be set by connecting the monitor locally, that is, connecting the video recorder to the monitor, and setting the password according to the prompt after turning it on. The content of the password must be consistent with the password. After activation, follow the instructions on the page to set the corresponding parameters. - Switch the channel mode of the coax XVR recorder according to the type of camera connected. Check the signal access type of the corresponding channel in the main menu-Channel Management-Channel configuration-Signal access status interface. If the channel is connected to the simulation signal, choose the CVS, connect to the Haikang coax camera, choose the TVI, connect to the AHD signal, choose the AHD, and connect to the network camera, choose the IP mode.(For some video recorder models and versions, there are two options in the "signal access status" interface: "coax/simulate" and "IP". If you connect a coax or simulate camera, choose "coax/simulate", and if you connect a network camera, choose "IP".) 4. ** Questions about adding a camera to a video recorder ** - Before adding a new camera, you need to activate the device. In the main menu of the video host-Channel Management-Channel configuration- IP channel, click the unactivated IP camera or select "One Key Activation" for all devices. The activation interface will pop up and you can add the device normally after creating the password. Unactivated devices cannot display the monitoring screen. - Make sure that the IP of the camera and the IP of the video recorder are consistent. If they are not consistent, change the host IP in the main menu of the video host-System configuration-Network configuration-Basic configuration-IP V4 address. For the camera, you can use the intranet search tool to change the IP address of the camera in batches, and fill in the starting IP, port, intranet mask, gateway, and other information. - If you want to add a third-party camera, you need to change it to the ONVI protocol and the corresponding port information. To add a Haikang camera, you need to log in to the camera, click [configuration]-[system]-[security management]-[security service], remove the tick in [unlock illegal login lock], and then [save]. - If the stream type of the video host channel is not supported and is not compatible with the video camera's code format (for example, the video camera is in the H.265 code format and the video host is in the H.264 code format), you need to access the video camera on the intranet webpage. Then, change the video code to H.264 in the "configuration","code parameters", and save the application. The video host will delete the original channel and add a new camera. - When the resolution of the camera exceeds the maximum resolution supported by the video recorder (such as the Hikvision host indicating that the image resources are insufficient), you need to go to the video recorder host, and then you need to go to the configuration- - If the video recorder channel mode is wrong or the camera voltage is unstable (The normal voltage and current are about 12V and 2A, which can be tested with a multi-meter.) For the video host that supports the connection of the simulation and network cameras, the channel mode needs to be modified. In the main menu of the video host-Channel Management-Channel configuration-Signal access status interface, select the signal access type of the corresponding channel. If the channel is connected to the simulation signal, choose the CVS; if the channel is connected to the Haikang coax camera, choose the TVI; if the channel is connected to the AHD signal, choose the AHD; Connecting to the network camera and selecting the IP mode. - If the Hikvision hard disk recorder shows an exclamation mark after adding the camera and an unknown error occurs (the problem cannot be solved after deleting the channel and adding it again. The Hikvision product needs to change the password forcibly. The network surveillance camera version is above V5.3.0, and the hard disk recorder version is too low), the solution is as follows: - First, go to the official website of Hikvision, service support-download-device upgrade package download- DS - 71/78/79 series NVR upgrade package, choose the upgrade package download according to the actual model of the hard disk recorder. - After the download was complete, he used the local unzip software to uncompress the file and put the uncompressed digicap.dav file into a FAT32 USB drive. - The USB drive was inserted into the hard disk recorder, and the main menu of the hard disk recorder was entered. Then, the system maintenance was selected. In the system maintenance, the version upgrade was selected. The version upgrade file was the same as that of the hard disk recorder, and the upgrade was clicked under the hard disk recorder. During the upgrade process, the power supply was guaranteed to be normal. The power supply could not be manually turned off or cut off. The system would automatically restart after the upgrade was completed. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
How to use the camera tutorial
Different models of cameras were used differently. For example, for the Canon Dlux8 camera, turn it on first, press the menu button after turning it on, find the Wifi, and then open the pairing interface. He took out his phone and found the APP, then clicked on it. After clicking on it, he clicked on add camera, found the specified model Dlux8, clicked continue, and chose Dlux8 to continue. It would show that the camera had been found, and then click connect. For the M10, the round button on the top right of the lens was used to activate the long exposure function. When manually focusing, if the peak focus was not selected as "automatic", you needed to press this button to activate the peak focus. In addition, when switching to the R lens, you also needed to press this button to activate the peak focus. The lever on the left side of the M10's body was used to view the frame lines of different focal lengths for easy composition. Three sets of frame lines would appear, namely 28mm +90mm, 35mm +135mm, and 50mm +75mm. The M10/M10 - P had three types of measuring methods: spot, center-emphasized, and multi-zone. All three types of measuring methods could be used normally in live view, but when live view was turned off and the yellow spot was used, the actual measuring value was based on the center-emphasized measuring results. The long exposure noise reduction function could not be turned off. If the shutter was set to the M position, an arrow might appear in the side-axis viewfinder when the shutter was pressed halfway. The outermost ring structure of the lens of the Leopard SOFT 2 Polaroid camera could switch between different shooting modes, with up to 10 choices. The knob at the top of the camera could switch between different filter effects, with up to 10 choices. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
Slow motion camera tutorial
The tutorial for shooting slow motion with different equipment is as follows: 1. ** Some Xiaomi phones **: Turn on the camera, click on the top right corner to enter the camera settings, customize the camera function layout, and press and drag the icon to adjust the layout to achieve slow motion shooting. 2. ** Osmo Pocket Pocket Cloud Platform camera, Osmo Action camera, Osmo Mobile phone cloud platform 3, Dajiang drone Mavic Mavic 2 and Mavic Air**: connect the device to the phone, and then operate it in the DJI Mimo App interface to take a slow motion effect. 3. ** Using AI (Take Huawe-related technology as an example)**: - First, the frame information and event information captured by the two cameras were sent to the warping and synthesizing modules. The warping module used the U-shaped network to convert the motion into optical flow representation, and then converted the events into real frames; the synthesis module used the U-shaped network to place the events between two frames and directly generate a new possible frame for each event. - Since the synthesized video might have noise, the third module would use the new information in the second intercept synthesis module to refine the first module, which was to extract the most valuable information from the two generated frames of the same event and perform warping optimization (again using the U-net network to generate the third frame version of the event). - Finally, these three candidate frames were input into an attention-based average module, which used the best part of the three frame representation to form the final frame. Repeating this process for all the events provided by the event camera would produce the final desired result. 4. ** Computer (using PR or FCPX software)**: import the captured footage into the software and change the speed of a certain area of the footage to achieve a slow-motion effect. 5. ** General camera equipment **: - ** Device Selection **: - ** Cameras **: Many modern DSLR cameras and mirrorless cameras support high frame rate shooting, such as the SonyA7S series and Canon Eos R series, which can shoot 1080p or 4K video at high frame rates. Professional cameras such as the SonyFS7 and the Red series can provide higher frame rates and better picture quality, but the price is relatively higher. - ** Lenses **: Fast lenses can perform better in low-light environments, wide-angle lenses are suitable for capturing vast scenes, and telephoto lenses are suitable for capturing distant details. - ** Tripod and Stabilizer **: When shooting in slow motion, stability is very important. Using a tripod can ensure the stability of the camera and avoid blurring the picture due to shaking. - ** Principle **: By shooting a video at a high frame rate (such as 60fps, 120fps, 240fps, or even higher, the standard frame rate for movies is 24 frames per second), and then playing it back at a normal speed during playback, time can be slowed down to capture more detailed movements. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
Basic knowledge of novels
The basic knowledge of the novel was as follows: A novel is a literary genre that is usually composed of a series of stories, each of which has its own protagonist and plot. A novel could be an independent literary work or a gift or attachment to other literary works. Fictions often use fictional plots and characters to express the author's views and thoughts. The novel can be about any subject, including romance, adventure, history, science fiction, horror, and realism. The common types of novels include science fiction, horror novels, historical novels, romance novels, detective novels, science fiction, and so on. Fictions are usually narrated in first or third person, which means that the author can directly describe the feelings, thoughts and actions of himself or the characters he/she is describing. The language of a novel is usually very vivid, vivid, concise, and infectious in order to better convey the author's views and feelings. The creation of a novel usually requires a long period of preparation and exploration. It requires the author to have a wealth of knowledge and experience in order to create a fascinating story and unique characters. The novel can influence people's thoughts, feelings and values, so it is widely read and studied.
The Basic Knowledge of Prose
Prose is a literary genre that is free, flexible, and lyric-based. It often uses freestyle, argumentative, narrative, and narrative techniques to express the author's emotions and thoughts. It does not pay attention to structure or rhythm. Prose is not limited by time and space, and can be written anytime and anywhere. It can be a diary, an essay, a long novel, a poem, etc. Prose is a form of literature that is often used to describe characters, scenery, emotions, and thoughts. It is one of the most popular forms of literature.
Basic knowledge of scripts
The basic knowledge of the script was as follows: A script is a document describing the plot, scenes, characters, and actions of a movie or television series. It is usually written by the director, screenwriter, and actors. The structure of a script was usually divided into three parts: the beginning, the middle, and the end. The opening was usually the introduction of the characters and background information, the middle part was the development of the plot, and the end was the conclusion and climax. The characters in the script usually had basic information such as name, age, gender, personality, goals, and motives. There were also clear lines of action and dialogue. The scenes in the script usually have information such as location, time, climate, and atmosphere, and they need to correspond to the characters and the plot. The action scenes in the script needed to have clear action designs, including attack, defense, pursuit, murder, and so on. The language of the script should be clear, concise, rhythmic and musical so that the audience can better understand and enjoy the movie or TV series. The review and modification of the script was very important. It required the participation and review of the director, scriptwriter, producer, and other parties.
Basic knowledge of calligraphy
Calligraphy was an important part of Chinese culture. It was an art form that used words as a tool to express the author's unique artistic style and aesthetic concept through the use of pen and ink. The following is the basic knowledge of calligraphy: 1. Calligraphy font classification: Calligraphy font can be classified according to the thickness of the strokes, the curvature and the beauty of the font. Common calligraphy font types include regular script, running script, cursive script, official script, seal script, etc. 2. The characteristics of calligraphy strokes: The strokes of calligraphy should be smooth, flexible, powerful, and rhythmic. Common strokes included lifting, pressing, turning, folding, arc, circle, square, and so on. 3. Tools for calligraphy creation: The main tools for calligraphy creation are brushes, but there are also pens, pens, and pens. 4. The artistic features of calligraphy: The artistic features of calligraphy include the use of pen, ink, the relationship between words, rhythm, artistic conception, etc. Among them, the relationship between the brush, ink, and words was the basic element of calligraphy. Rhythm and artistic conception were the higher realm of calligraphy. 5. Calligraphy schools and representatives: There are many schools of calligraphy: traditional calligraphy schools and modern calligraphy schools. Traditional calligraphy schools mainly include regular script, running script, cursive script, official script, etc. Modern calligraphy schools include fountain pen calligraphy, pencil calligraphy, fountain pen calligraphy, etc. The representatives included Wang Xizhi, Wang Xianzhi, Yan Zhenqing, Kang Youwei, Liang Qichao, and so on. History and Development of Calligraphy: Calligraphy originated from China's long history and experienced a long development process. The earliest calligraphy could be traced back to the Warring States Period. With the development of the written language, calligraphy gradually became an independent art form. Nowadays, calligraphy had become an important part of Chinese traditional culture and was deeply loved and respected by people.