Djiang Zhitu Tilting photography running map tutorial
The following are the basic steps of Djang-Zitu's tilting photography: ** 1. Basic Setting ** 1. ** Flight Route View ** - You can click on the numbers 1 - 5 on the map interface to view the various routes. 1 represents the downward route, and 2 - 5 represent the inclined routes in four different directions. 2. ** Real-time 2D (related to aerial photography missions but can be used as a reference)** - If it was turned on, the aircraft would process the photos taken in real time and display the map construction results on the map during the mission, but the accuracy was low. After the mission was over, the original photos could be imported into the Dajiang Intelligent Map for high-precision construction. If it was turned off, there would be no real-time map construction results. 3. ** Real-time 3D ** - This was a paid function that required the purchase and activation of a license. When it was turned on, the aircraft would process the photos in real time during the mission and display the 3D point cloud result on the map. After the mission was over, the original image could be imported for higher-precision 3D model reconstruction. The default real-time 3D result was point cloud + model, and the model option could also be unchecked. If it was turned off, there would be no real-time 3D point cloud/model result. 4. ** Complete the action ** - [Hover: Hover at the final waypoint after the mission is completed for subsequent flight control.] - [Automatic return: When the flight altitude is higher than the set return altitude during the mission, the flight will automatically return to the current flight altitude after the mission is completed. If the flight altitude is lower than the set return altitude, the flight will first rise to the set return altitude and then return to the return point after the mission is completed. The return altitude can be set in the flight control.] - [Landing on the spot: After the mission is completed, it will automatically descend to the ground at the final waypoint and turn off the motor.] 5. **GSD (ground sample distance)** - It was automatically calculated by the Djiang Map based on the flight altitude and the camera model. The value was the actual ground distance represented by each pel in the original image collected. 6. ** Mission height ** - It was the height of the aircraft relative to the scene it was shooting when it was performing a mission. 7. ** Flying Speed ** - Including the flight speed (downward) corresponding to the speed on the downward route, the flight speed (inclined) corresponding to the speed on the inclined route, the automatic flight speed when the aircraft performs the mission, and the flight speed when the aircraft flies outside the route (such as starting to the starting point of the route or returning after the mission is completed), it is 13m/s and cannot be changed. He could also click on the settings button to set the flight speed to the maximum flight speed that Djang-Zitu calculated based on the flight altitude, camera model, and the parameters in the advanced settings to meet the requirements of taking photos. 8. ** Choose flight route (Oblique photography mission)** - From the five flight routes, select the route that needed to be executed. The route that was not selected would not be executed. ** 2. Advanced Setting ** 1. ** Side Overlap Rate/Side Overlap Rate (Tilted)** - The overlap rate between photos of two adjacent main flight routes can be set to 10% - 90%. In the oblique photography task, the side overlap rate corresponds to the overlap rate on the downward flight route, and the side overlap rate (oblique) corresponds to the overlap rate on the oblique flight route. 2. ** Heading overlap rate/Heading overlap rate (inclined)** - The overlap rate between two adjacent photos on each main route can be set to 10% - 90%. In the oblique photography task, the course overlap rate corresponds to the overlap rate on the downward looking route, and the course overlap rate (oblique) corresponds to the overlap rate on the oblique route. 3. ** Main flight route angle ** - The direction in which the main route is generated is 0° from the north and positive from the clockwise direction. The range can be set to 1° - 360°. 4. ** Margins ** - For the mission area that has been set, you can further limit the flight area of the aircraft by widening (positive value) or shrinking (negative value) the margin. The default value of the margin is 25% of the mission height, and the range can be set from-30% to +30% of the mission height. ** 3. The camera settings (Part of it is related to tilting photography)** 1. ** Model of the camera ** - The software could automatically identify the camera model of the aircraft, and there was usually no need to set it up. 2. ** Picture Scale ** - It is recommended to use 4:3 for filming. 3. ** White Balance ** - The default value is farmland, which can be set according to the specific scene. 4. ** Exposing Mode ** - Automatic or Shutter priority. If the shutter priority is selected, you can choose sunny, cloudy, low-light, or custom in the "exposure scene". If custom, you can adjust the shutter, IQ, and exposure compensation. 5. ** Distortion correction (if Phantom 4 is used)** - It is turned off by default. If it is turned on, it can automatically correct the photo distortion, but the quality of the photo may be lower than when it is not turned on. If you need to use the original film post-processing, it is recommended to turn it off. 6. ** Tilting angle of the pan head (only applicable to tilting photography tasks)** - The pitch angle of the cloud platform when flying on an inclined route, ranging from-85 ° to-40 °. Read more exciting novels for free
photography tutorial
Here are some photography tips: 1. ** In terms of exposure ** - ** Shutter **: When the other parameters remain unchanged, the higher the shutter speed, the longer the light entering time, the more exposure, and the brighter the image; otherwise, the darker the image. - ** Aperture **: The smaller the aperture parameters, the greater the amount of light entering, the more exposure, and the darker the image. The larger the aperture, the smaller the depth of field. The smaller the aperture, the greater the depth of field. - ** Iso-sensitivity **: The higher the sensitivity, the lower the shutter speed required to obtain the same exposure effect. When the light is dim, the sensitivity can be increased, but the increase in sensitivity will cause the image quality to be lacking and grainy. When there was sufficient light, the sensitivity was generally around 100, and it was best not to exceed 3200. There was a triangular relationship between the three. The higher the aperture value, the smaller the aperture, the smaller the amount of light entering, and the depth of the field. The higher the shutter value, the slower the shutter, the greater the amount of light entering, and the slower the speed. The higher the IQ value, the greater the amount of light entering, and the lower the quality of the image. 2. ** Setting of exposure mode ** - ** Fully Automatic **: The shutter speed and aperture are automatically calculated by the camera and cannot be changed during shooting. After confirming other elements, press the shutter. - ** Program auto exposure mode (P)**: The camera will automatically calculate the shutter speed and aperture combination. The photographer can modify the parameters. - ** Shutter priority mode (S or TV)**: The camera will keep the shutter speed set and automatically calculate the appropriate aperture size. - ** Aperture priority mode (A or LV)**: The camera will keep the aperture size set unchanged, calculate the appropriate shutter speed, and maintain a large aperture when shooting portraits. - ** Full Manual Gear (M)**: The shutter speed and aperture are set by the photographer. The photographer is required to be familiar with the shutter speed and aperture combination. 3. ** Focus * - [Manual Focus (MV)]: It is suitable for close-range shooting and is a precise focusing method. - ** Automatic Focus ** - ** AF-S (Single autofocus)**: Can be used to pose for portraits, still life, and architectural shots. After half-pressing the shutter to focus successfully, the shutter can be fully pressed. - ** AF-C (Continuous Focus)**: Used for moving objects, capturing people and animals. Half-press the shutter to focus continuously. - ** AF-A (Smart autofocus)**: The camera automatically determines whether it is focused on a single shot or a continuous shot based on the subject, but it is easy to make mistakes and cause out of focus. 4. ** White Balance ** - Correct the color temperature and restore the color of the subject so that the color of the picture is similar to that of the human eye. - He could adjust the overall color atmosphere by controlling the color temperature. If he increased the K value of the color temperature, the photos would be warm, and if he lowered it, the photos would be cold. 5. ** Focus **: The depth of field is related to the focal length. The smaller the focal length, the clearer the background and the greater the depth of field. At the same time, he had to be familiar with the characteristics of different focal lengths such as super wide angle, 24mm, 28mm, 35mm, 50mm, 85mm, 100mm, 135mm, 200mm, 300mm, etc. 6. ** Light Usage **: The outdoor morning and evening light angles are the best, and the light quality is the softest. 7. ** In terms of composition **: The photo usually involves the main body, the accompanying body, the environment, the front, the background, and other elements. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
photography tutorial
The following is a photography tutorial: ** 1. Exposure-related ** 1. ** Shutter **: When the other parameters are fixed, the higher the shutter speed, the longer the light entering time, the more exposure, and the brighter the picture; otherwise, the shorter the light entering time, the less exposure, and the darker the picture. 2. ** Aperture **: The smaller the aperture parameters, the greater the amount of light entering, the more exposure, and the darker the image. At the same time, the size of the aperture affected the depth of field. The larger the aperture, the smaller the depth of field, and the more blurred the other objects except the subject. The smaller the aperture, the greater the depth of field, and the clearer the other objects. 3. ** Iso-sensitivity **: The higher the sensitivity, the lower the shutter speed needed to obtain the same exposure effect. When the light was dim, the sensitivity could be increased to prevent the shutter speed from being too slow, but the increase in sensitivity would cause the picture quality to be lacking and grainy. When there was sufficient light, the sensitivity was generally set to about 100. In M manual mode, if the aperture and shutter were adjusted and the screen was still dark after the sensitivity was set to 100, the sensitivity could be increased appropriately, but it should not exceed 3200. 4. ** Aperture, Shutter, Iso-triangle relationship ** - The larger the aperture value, the smaller the aperture, the less light entering, and the depth of the field. - The higher the shutter value, the slower the shutter speed, the greater the amount of light entering, and the slower the speed. - The higher the value, the more light would enter, and the quality of the image would decrease. ** 2. Setting the exposure mode ** 1. ** Fully automatic (Auto)**: The shutter speed and aperture are automatically calculated by the camera. The photographer cannot change it during shooting. After confirming other elements, press the shutter. 2. ** Program auto exposure mode (P)**: The camera will automatically calculate the shutter speed and aperture combination. The photographer can modify some of the parameters. 3. ** Shutter priority mode (S or TV)**: The camera will keep the shutter speed set and automatically calculate the appropriate aperture size. 4. ** Aperture priority mode (A or LV)**: The camera will keep the aperture size set unchanged, calculate the appropriate shutter speed, and maintain a large aperture when shooting portraits. 5. ** Full Manual Gear (M)**: The shutter speed and aperture are set by the photographer. It is relatively easy to operate, but the photographer must be familiar with the shutter speed and aperture combination. ** 3. Focus ** 1. [Manual Focus (MV)]: It is suitable for close-up shooting and is an accurate focusing method. 2. ** Automatic Focus ** - ** AF-S (Single autofocus)**: Used for posing portraits, still life, and building shots. After half pressing the shutter and hearing the sound of successful focusing, the shutter can be fully pressed. - ** AF-C (Continuous Focus)**: Used for moving objects, capturing people and animals. When shooting, press the shutter halfway to continue focusing. - ** AF-A (Smart autofocus)**: The camera will automatically determine whether to use single-shot or continuous focus based on the subject, but it is easy to make mistakes and cause out of focus. ** 4. White Balance ** 1. It can correct the color temperature and restore the color of the subject, making the color of the photo close to the human eye. 2. By controlling the color temperature, the overall color atmosphere of the picture could be adjusted. If the K value of the color temperature was increased, the picture would be warm, and if it was lowered, it would be cold. ** 5. Focus ** 1. In terms of depth of field, the smaller the focal length, the clearer the background and the greater the depth of field. 2. There are many focal lengths to choose from, such as super wide angle, 24mm, 28mm, 35mm, 50mm, 85mm, standard zoom lens, 100mm, 135mm, 200mm, 300mm, super long focal length, etc. There were also some practical techniques in portrait photography: 1. ** A light feeling in the autumn leaves **: Standing in a light posture, with both feet together naturally placed on the fallen leaves, both hands gently holding the yellow flowers in front of the chest, looking into the distance with gentle eyes, smiling, head naturally tilted to one side to show the line of the neck. 2. ** Keep fresh and refined in the lush greenery **: Choose a tree-lined background, stand one foot in front of the other and bend your knees slightly, hold a yellow leaf in front of your chest or slightly to the side, naturally shawl your hair, smile, and look back at the camera. The photographer squatted in the grass and focused his eyes on the green grass in the background. 3. [Show your freedom and passion under the maple tree: Stand under the maple tree with your feet shoulder-width apart, lean forward slightly, open your arms or lean your head back to enjoy the sunlight.] 4. ** Capture the beauty of tranquility on the grass by the sea **: Sitting elegantly, legs naturally bent, feet touching the ground or crossed, one hand on the thigh, the other hand tidying up the hair on the temples, the background is the sea island, the sky is clear, the head slightly turns to look into the distance. 5. ** Take a back view with a sense of story **: Stand in the maple forest and face the camera sideways. Your feet are one in front and one behind. Your body is slightly sideways. Your hands are naturally drooping or stroking the leaves or overlapping in front of you. Use the mottled light and shadow of the sun through the leaves to increase the layering and mystery. 6. ** Take a photo on a rock outdoors to feel relaxed **: Choose a flat or slightly inclined rock to sit down. Straighten your legs or bend them slightly. Touch the ground lightly with your feet. Leaning your upper body forward, tilting your head to one shoulder, and closing your eyes to put a fallen leaf beside your face. 7. ** Exhibits delicate emotions through touch **: Standing in the maple forest wearing a white shirt and a beret, touching the maple leaves with both hands, eyes focused and gentle. 8. ** Revealing the beauty of intoxication in the fallen leaves **: Squatting in the fallen leaves, wearing a red sweater and a floral dress, holding ginkgo leaves in both hands, looking into the distance with deep affection in his eyes, his head slightly tilted. 9. ** Charm of contemplation on the maple leaf ground **: Sit on the maple leaf ground, wear a white sweater, brown skirt, and beige beret, with your hands folded on your knees or drooping naturally, looking into the distance or slightly lowering your head in contemplation, and your face should be in a place where there is light. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
Using a single camera to make a tilting photography model
A single camera can be used for oblique photography model construction. In small-scale 3D modeling projects, the single-camera tilting photography solution had certain advantages over the traditional five-lens or two lenses tilting photography system, such as cost, load, flight control, and so on. The single-lens tilt photography system could adopt the "well" shaped flight operation method. The lens could be pointed at an angle, and the data could be collected by dense flight routes and "well" shaped cross-flight, so as to quickly and effectively obtain the image and texture characteristics of the ground objects. Then, with the help of data processing software, the three-dimensional modeling could be quickly realized. For example, when constructing a real-life three-dimensional model of a test area in Huaxi District, Guiyang City, a multi-wing drone equipped with a single-lens camera was used, and the drone butler software was used to set the flight aerial camera control parameters. Based on the Smart3D Capture software multi-view vision algorithm (PM VS) and motion structure recovery algorithm (CHF), a real-life three-dimensional model that met the requirements of large-scale aerial photogrammetery was constructed. It showed low cost and high efficiency in the fields of real estate surveying, cadastral surveying, model display, etc. The advantage of high precision. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
Handbag photography tutorial
The following are some photography guides for female bags: - ** Basic courses ** - [Light Mastery: Light is crucial for high-quality films.] It is recommended to shoot in a place with plenty of sunlight. The fairing effect in natural light is better. The soft light in the afternoon was suitable for creating beautiful light and shadow effects. If it was shot indoors, the main light, auxiliary light, and outline light should be reasonably arranged according to the material and shape of the leather product. For example, for a patent leather bag, a soft light box could be used to leave a high-light area with obvious intersection lines on both sides to reflect its luster. At the same time, attention should be paid to the reflection control. Pay attention to the difference between the mirror material and the diffuse reflection material to avoid the reflection being too strong or too weak to affect the product display effect. - ** Choice of background **: Don't have too many colors in the background. The overall color tone should be consistent. White walls, white sheets, and marble are very classic and easy to shoot. - ** Principle of composition **: You can open the nine-square grid reference line on your mobile phone and place the bag in a suitable position, such as the middle or the intersection of the reference line. You don't need to fill the entire picture. The appropriate white space will make the photo look more advanced. - ** In terms of product shooting skills ** - ** Styling **: Use stuffing to shape soft products such as female bags, making them look full, smooth or naturally wrinkled, improving visual beauty. - ** Originality and Style ** - ** Integration of fashion elements **: Pay attention to fashion information, magazines, etc., and integrate fashion elements into photography to make the handbag more attractive. - ** Personalized expression **: Try different shooting styles and creative expression techniques according to the brand's tone and the characteristics of the handbag to make the handbag stand out. - ** Post-editing **: Learn to use professional software to post-process the photos taken to improve the color, texture, and overall effect of the photos. - ** Other Skills ** - ** With props **: You can use some props around you, such as books, flowers, sunglasses, coffee, etc., to make the photo look richer and more lifelike. The chair is also a good photo tool. Adding it to the picture can increase the space and layering of the photo. It is also very artistic when matched with the light and shadow. - ** Flipping through the bag to share the photo **: You can take a photo of the contents of the bag. If the opening of the bag is not so big, you can take a photo of the bag as if the contents are neatly " poured out ", which looks more creative. Or you can arrange the contents of the bag into a rectangular square array. If you like the abstinent style, you can arrange for the same color shoot. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
Clone photography tutorial
The following was a tutorial on how to use a clone camera. First, open the clone camera, enter the home page, and click the "Shoot" button. Then, enter the shooting interface, click the "Shoot" button again to complete the shooting, and then click the "tick" button. Then, enter the editing interface, press and hold the object you want to clone, mark the entire object, and finally press the "tick" button. If you were to use the cloning tool to operate in the later stages of photography (take landscape photography as an example), take the "see the mountains through the clouds" effect as an example. First, copy the background layer, use the imitation stamp tool, sample the blue sky area, and then smear at the junction of the mountain and the clouds (every few strokes must resample the blue sky). This step does not need to be detailed, just cover the junction of the mountain and the clouds. Next, he added a black mask next to the layer to mask all the effects. First, he used a white brush (Feather 0) to carefully brush the intersection between the mountain peak and the blue sky. Then, he used a soft brush with 20% Opacity (Feather 100) to decorate the transition area between the blue sky and the clouds above to make the connection more natural. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
Skit photography tutorial
Mooncake shooting tutorial, photography video tutorial
Here are some mooncake shooting guides: 1. ** Shooting with professional equipment ** - ** Equipment preparation **: Canon 6D2 camera, 100mm lens, Shiniu Flash 600 second-generation light, etc. - ** Lighting ** - [Main light: Use a Divine Bull Flash 600 second generation. The accessories are standard covers. Light the background at the two o'clock direction on the back right side. To create a window effect, a window pane can be added in front of the light.] - "Assist light: Use another Shiniu Flash 600 second generation, and choose a long soft light box as the accessory. Light the main mooncake on the front right side. Pay attention to the position of the lamp head not to lean towards the background to avoid affecting the background light effect. - "Light fill: Use a large foam board to fill the light on the left side. If the shooting time is during the day and the fill light effect is not good, you can add natural light to make the light ratio more uniform. - ** Concept of composition **: For example, use the door as the background, place the main body on the table, arrange the props according to the rhythm of height, and use a flat angle to reflect the daily feeling. - ** camera parameters **: Aperture set to 5.6, shutter speed 1/160 seconds, USB 100, main light output 1/8, auxiliary light output 1/32. - [Post-production plan: adjust the white balance, increase the brightness of the shadows, increase the clarity and contrast, sharpen the outline of the props and the main body, and reduce the saturation of the blue primary color to reflect the dark atmosphere.] 2. ** Phone Shooting ** - ** Creating a sense of atmosphere **: Place the mooncake on a white plate, turn on the phone's 2x focal length (to prevent the plate from distorting), use some green plants as the background, and focus on the mooncake on the three-point line under the nine-square grid. - [Increase layering]: Take a book and place it under the plate. Use the top-down angle to center the composition. You can also place some cutlery on the side to form a parallel diagonal line. - ** Framed composition **: Break some mooncakes apart, take a cup, and use the cup handle to form a framed composition. The combination of virtual and real will create a sense of atmosphere. - Other techniques: Find a well-lit window, take two white rags, and pose the mooncake. Use the desk calendar as a prop to magnify it twice and make a diagonal composition. You can take a cup of tea as the background, click the portrait mode, adjust the aperture value to F2, and focus on the mooncake to create a sense of reality. You can also cut the mooncakes and stack them up and down. Find a magazine as the background, place the mooncake in a good position, magnify it three times and place the mooncake on the right three-point line. 3. ** Shooting in different styles ** - ** Simple Shooting ** - [Props: Various colors of cardboard. Melon seeds, walnuts, peanuts, and other common mooncake ingredients or grains may be used.] - ** Light **: Two lights to create a shadowless effect, shooting in the light. - ** Cameras and composition **: Aerial shot (God's perspective), using the golden ratio composition. - ** Chinese Style Shooting ** - Setting up the scene: Find a Chinese window pane and all kinds of old boards to set up the front and back. Find a Chinese vase that is similar to the color of the cheongsam and insert golden osmanthus. When the back is in space, you can hang calligraphy practice paper, pen rack, cast iron pot, etc. on the background cloth. Or use two boxes of mooncakes, a small porcelain plate, oil painting background paper, and a small table as props. You can also use two boards and a few old wooden trays. Add the four treasures of the study and tea set to create a Chinese atmosphere full of books. - ** Light distribution **: It can be used as a single bare light + standard cover, backlit on the right, and filled with light on the front left side. - ** Shooting method **: You can take a test shot, the photographer can take a selfie (such as a 10-second selfie after changing into a cheongsam after the scene is set up), take a close-up of the mooncake, etc. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
Running Map
In the second chapter of Black Mythology: Wukong, it was recommended to choose to attack when the root qi was unlocked, and there was basically no need to change the addition and reduction in the future. Go straight to the bridge and turn right. You can get the first bottle of Gourd Wine, the lamb's brew, and then clear the monsters to reach the pool. There are some monsters and collected items here. He continued to walk along the road to the entrance of the first temple, Shamen Village. After Sun Shangxiang walked to the right to take the treasure chest, he had to avoid being hit by monsters. He could enter the courtyard along the periphery and open the door. After clearing the small monsters, he turned back to kill the BOSS to obtain the Soul Essence. Talk to the cow and horse on the left (if there is no NPC, you can check the previous article). The well in the courtyard can trigger a hidden mission after obtaining the rattle-drum. He walked along the road and talked to the people in the house. He walked up and absorbed the aura in the house. There was a treasure chest in the courtyard behind him. He went down to clean up the monsters that would self-destruct and then absorbed the aura in the other house. After cleaning up, he used the Earth Shrinking Green Talisman to return to the Earth Temple to recover. After that, he could check the map. From here, he would meet an NPC and receive the quest to kill the toad. After killing it, he would be able to refine pills by himself. Behind the NPC was the first futon. After returning to the Earth Temple and recovering to full health, he walked straight to the right to open the BOSS door. Inside was the BOSS King Sha and Erlang Sha. There were two plots here. One could kill Erlang first and let the king escape, or kill the king first and then kill Erlang. Not satisfied with the game? You can read the novel related to Black Myth: Wukong to understand the exciting plot!
Zhitu education
Zhitu Education focused on cloud computing, big data, cloud security, artificial intelligence and other high-tech industries. It cooperated with dozens of first-class enterprises and more than 100 universities to integrate global high-quality enterprise technical resources, introduce industry benchmark enterprise knowledge systems, and innovative teaching productivity. With job skills as the starting point, it produced professional talent training solutions to help colleges and universities develop professional courses, professional construction, scientific research and production, teacher training, and high-quality employment of students. Since its establishment, Zhitu Education Company has been committed to providing high-quality educational consulting services for the majority of students. It adhered to the educational philosophy of "leading the future and enlightening wisdom" and provided comprehensive and customized learning programs for the majority of students. Its main project focused on the development and promotion of design training courses, aiming to cultivate design talents with innovative thinking and professional skills. The company had a scale of 20 - 99 people. It was not funded and belonged to a training/coaching organization. It was currently open to the public to recruit educational advisors, design trainers, course advisors, telephone sales, and other positions. The company provided competitive salaries and generous benefits to its employees. In addition, more than 100 schools were using Zhitu products.
Simple DSLR photography tutorial
The following is a simple DSLR photography tutorial: ** I. The structure of a single-lens reflex camera ** 1. Understanding the body, lens, sensor, viewfinder, shutter, display, and other components were the basic components of an DSLR camera. ** 2. Shot parameters ** 1. ** Type of lens **: For example, Canon lenses include different types of lenses such as EP, ESF-S (AP-S format), MP-E (1x or higher), and TS-E (shift-axis lens). 2. ** focal length **: For example, the Canon EF24 - 105mm f/4LIS USM lens, 24 - 105mm means that the maximum wide-angle end is 24mm, and the maximum telephoto end is 105mm; if there is only one value, it is a fixed-focus lens. 3. ** Maximum Aperture **: f/4 represents the maximum aperture, only one value represents a constant aperture lens, and two values represent the maximum aperture of the wide-angle end and telephoto end respectively. For example, L represents a Canon professional lens (with a red circle in front of the lens), IS represents anti-shake function, USM represents an ultrasonic motor, and II represents the second generation of this lens. ** 3. Focus related knowledge ** 1. ** Introduction to focal length **: It refers to the distance between the center of the lens and the surface of the sensor. The unit is millimeters (mm). 2. ** Focus length, field of view and depth of field **: The shorter the focus, the larger the shooting range and the greater the depth of field; the longer the focus, the smaller the shooting range and the smaller the depth of field. 3. ** Focus length and x-ray effect **: The shorter the focus, the stronger the x-ray effect (greater distortion); the longer the focus, the weaker the x-ray effect (lesser distortion). ** 4. Movie Tune ** 1. ** Concept **: Shadow tone refers to the brightness of a photo. Bright photos are high-profile, dark photos are low-profile, and neither bright nor dark photos are mid-tone. 2. ** Different shades **: Bright objects are suitable for high-profile performance, while dark objects are suitable for low-profile performance. ** 5. Shooting Mode Setting (for beginner users)** 1. ** Automatic or P mode **: suitable for beginner users who have just come into contact with the DSLR camera and haven't learned it in depth. Basically, there are not many settings. Just press the shutter and you can shoot. 2. ** AR (Aperture priority mode)**: You can set the aperture value (F value) yourself. The smaller the F value, the larger the aperture, and the higher the degree of blurring outside the main body. It is suitable for shooting scenes such as portraits, food, and macro scenes that focus on blurring the background. The higher the F value, the smaller the aperture, and the better the layering of the scenery. 3. **TV (Shutter priority mode)**: Set the shutter value manually. The smaller the value, the longer the exposure time inside the camera. It is suitable for shooting moving objects in a dark indoor environment (a tripod is needed to prevent the image from blurring). The higher the value, the shorter the exposure time of the camera. It is suitable for shooting fast-moving objects to prevent the subject from blurring the photo due to high speed. 4. **M (Manual)**: You need to manually set the shutter, sensitivity, and aperture size. It's relatively difficult, but it's a necessary skill for professional photographers. For example, outdoor portrait: 1/100s, 100F1.2 - 2.8; indoor portrait: 1/80s, 1500F2.8 or below; baby/pet photography: 1/200 or above, 100 - 800F1.4 - 5.6; still life/gourmet photography: 1/80s- 1/200s, 100 - 400F1.2 - 4. ** 6. Shutter Usage (Focus)** When you press the shutter, press it slightly. When the small square in the lens appears in the position you want to shoot (indicating that the focus is successful), then press the shutter. This way, the photo won't be out of focus. If the DSLR is a touch screen, the position where the hand touches will be the focus. ** 7. Setting of light sensitivity (USB)** The higher the sensitivity, the brighter the photo, but the worse the quality, the more noise; the lower the sensitivity, the darker the photo, but the better the quality, the less noise. Generally, it was recommended not to exceed the range of 1600. If you were to shoot outdoors on a sunny day, you would only need to shoot around 100. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>