Details of the camera lens parameters
The main parameters of the camera lens include focal length and aperture. The following is a detailed introduction: ** 1. Focus ** 1. ** Fixed focus lens ** - "definition: A lens with a fixed focal length. The common focal lengths are 10mm, 24mm, 35mm, 50mm, 85mm, 100mm, 135mm, etc. - Special traits: - The optical design and mechanical structure are simple, and the high image quality can be achieved at a low manufacturing cost. - It had a larger aperture and a lighter lens. - Because the focal length could not be changed, the adaptability was poor in scenes that required a quick change in the field of view. When shooting, one often had to move their position to change the framing range. 2. ** Zooming lens ** - "definition: A lens with a focal length that can be changed within a certain range, such as 12 - 24mm, 24 - 70mm, 70 - 200mm, etc. - Special traits: - The field of view could be changed, which was suitable for quick shots of active scenes. It was more convenient than carrying multiple fixed-focus lenses. - The structure was complicated, and the design of the optical path was difficult. Compared to the fixed-focus lens, the price was higher, the image quality was slightly worse, and the aperture was relatively small. - Different focal lengths: - Wide-angle range (usually <35mm): suitable for shooting culture, vlog, can highlight the sense of depth. - Medium focal length (usually 36mm-134mm): Often used for portraits or travel photography. - Telephoto end (usually> 136mm): suitable for shooting long-range shots, sports, flying birds, or expressing a sense of depth. ** 2. Aperture ** 1. ** Aperture expression and size relationship ** - The aperture value was marked with the letter f, such as 1:2.8, f/2.8, and F2.8. The smaller the f value, the larger the aperture, such as F1.4>F2.8>F4. The smaller the f value, the more blurred the background of the subject and the lighter the depth of field. At the same time, a large aperture also meant that the amount of light entering was larger. 2. ** Permanent Aperture and Non-Permanent Aperture (Floating Aperture)** - ** Permanent Aperture ** - For a zoom lens, the nominal maximum aperture can be used in all focal lengths, such as 24 - 70mmF2.8, 24 - 105mmF4, etc. - Special traits: - Generally, it can achieve better image quality (compared to a floating aperture lens). - Zooming when the aperture is set to the maximum will not affect the exposure. - If it was a wide-angle lens with a constant large aperture, it would be relatively expensive. - ** Non-constant Aperture (Floating Aperture)** - The aperture of the lens will change with the focal length, such as 18 - 300mmF3.5 - 5.6, 100 - 400mmF4.5 - 5.5, etc. - Special traits: - The lens was small in diameter, light in weight, and cheap. - The focusing speed was relatively slow. Due to the small aperture, it was not conducive to taking shallow depth of field photos. Read more exciting novels for free
Soviet camera lens parameters
The following are some of the parameters of the Soviet camera lens: - HELIOS44 58/2 lens ("Eight-feathered monster"). The specific parameters were not mentioned. - Mir - 1 2.8/37 lens: 37mm focal length (37.38mm), aperture ratio 1:2.8, field of view 60°, frame size 24x36mm, number of lenses/groups 6/5, front focal length-3.49mm, back focal length 37.17mm, distance from the first surface to the last surface 52.8mm, working distance (45.2mm for Mir - 1, 44.0mm for Mir - 1 -auto, 45.5mm for Mir - 1V), aperture ratio limit of 1:2.8 - 1:16, close-up focus limit of 0.7m, resolution of 45/23 lines/mm according to specifications (center/edge), light transmission rate of 0.78, connection (Lens-to-camera: Mir - 1 is M39×1, Mir - 1 -auto mount)(f/a Kiev - 10), Mir - 1V for M42×1; for screw attachment: Mir - 1 for Sp M49×0.5, Mir - 1V for M49×0.75; for snap-on attachment 51mm), overall size (The length of the lens with the lens cover: Mir - 1 is 62mm, Mir - 1V is 56mm, the largest frame diameter is 59mm), weight (Mir - 1 is 200g). - "JUPL- 9"("JUPL- 9" 2/85) lens: focal length 84.51MM, aperture 1:2 to 1:16, field of view 28 degrees 51 minutes, filter size M49*0.75MM, closest focusing 0.8M, seven pieces in three groups, the middle and back two parts are made of three lenses, the resolution is 32 lines/MM in the center, 23 lines/mm at the edge, volume 65(diameter)* 66mm, weight 0.36kg. - A particular camera had a focal length of 50mm and a clear aperture of 1:3.5. It was a three-piece, three-group orthoscope. The lens could be disassembled, and the shutter speed range was 1 - 1/1000. It also had a T-door and a B-door. There were ten levels of speed regulation, but the specific name of the lens was not mentioned. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
The main parameters of the camera lens
The main parameters of the camera lens were as follows: ** 1. Focus related ** 1. ** Fixed focus lens ** - The focal length was fixed. The common focal lengths were 10mm, 24mm, 35mm, 50mm, 85mm, 100mm, 135mm, etc. - The optical design and mechanical structure of the fixed-focus lens were simple. It could achieve high image quality, large aperture, and lighter at a lower cost. However, because the focal length could not be changed, it was not suitable for scenes that required rapid changes in the field of view. For example, when shooting dynamic scenes, the photographer might need to move his position to adjust the viewing range. 2. ** Zooming lens ** - The focal length can be changed within a certain range, such as 12 - 24mm, 24 - 70mm, 70 - 200mm, etc. - The advantage was that the field of view could be changed, and there was no need to change the lens to take photos of different scenes. It was suitable for quick shots of active scenes. However, its structure was complicated and the design of the optical path was difficult. Compared to a fixed-focus lens, the price might be higher, the image quality might be slightly worse, and the aperture might be smaller. ** 2. Aperture related ** 1. ** Constant-aperture lens ** - For the zoom lens, the nominal maximum aperture can be used in all focal lengths, such as 24 - 70mmF2.8, 24 - 105mmF4, 50mmF1.2, 85mmF1.4, etc. - The constant aperture lens would not affect the exposure when zooming at the maximum aperture, and generally could achieve better shooting quality. However, if it was a wide-angle lens with a constant large aperture, it would be relatively expensive. 2. ** Non-constant aperture lens (Floating aperture lens)** - The aperture of the lens would change accordingly with the focal length, such as 18 - 300mmF3.5 - 5.6, 100 - 400mmF4.5 - 5.5, etc. In addition, the aperture value was marked with the letter f. The smaller the f, the more blurred the background of the subject and the lighter the depth of field. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
The parameters of a single-lens reflex camera
The following are some important settings for a DSLR camera: 1. ** Shooting Mode **: It is recommended to choose the manual mode (M). This way, you can control the shutter, aperture, sensitivity, and other parameters independently. 2. ** Video recording format and size **: If there are no special requirements, you can choose to record 1920*1080, 25 frames, MOV format of high-definition video. If there are special requirements for zooming in, you can choose 4K or other format. 3. ** Shutter Speed **: Generally, it is twice the frame rate of the video. For example, when the frame rate is 25 frames, the shutter speed is set to 50; when the frame rate is 60 frames, the shutter speed is set to 120. This way, the visual effect can be achieved. 4. ** Aperture **: The aperture size affects the depth of field of the picture. A large aperture (such as F2.8) made the picture brighter and the background blur stronger, while a small aperture (such as F11) made the picture darker and the background blur weaker. The larger the aperture value, the smaller the actual aperture. 5. ** Light sensitivity (USB)**: When there is sufficient light, the lower the USB, the better. It is not advisable to set it too high in a dark environment, otherwise it will produce noise. For example, Canon DSLR can be set to 100 during the day and 800 - 1000 at night. A high USB (greater than 2000) will produce obvious noise and it will be difficult to repair later. 6. ** Color temperature (white balance)**: adjust to manual mode. Generally, it is recommended to adjust the color temperature between 4900 and 5300. The higher the color temperature, the more yellow the screen will be, and the lower the color temperature, the more blue the screen will be. 7. ** Focus **: If you have good manual operation ability, you can try to manually focus and select the focus point. Novice or for convenience, you can use the automatic intelligent autofocus. However, it is recommended to practice manual focus more if possible. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
General settings of camera lens parameters
The camera lens parameters generally included aperture, shutter speed, sensitivity, mode dial, and other settings: ** 1. Aperture ** 1. ** Relationship between values and light input and depth of field ** - Aperture is often expressed as F/x (or Fx). The smaller the x value, the larger the aperture, the more light entering, the smaller the depth of field, the clearer the focus subject, and the blurred background and background. It is suitable for taking close-up photos such as people and still objects. The larger the x value, the smaller the aperture, the less light entering, the larger the depth of field, and the clearer the picture elements. It is suitable for taking scenery, group photos, and so on. 2. ** Adjusts according to the brightness of the photo ** - When the photo is dark, you need to open a large aperture; when the photo is bright, you need to close the aperture. ** 2. Shutter Speed ** 1. ** Relationship with exposure time and photo brightness ** - The shutter speed was measured in seconds. The longer the exposure time, the brighter the photo. High-speed shutter (short exposure time), such as 1/500 seconds, can capture the instantaneous posture of high-speed moving objects; slow shutter (long exposure time), such as 4 seconds, can record the moving trajectory of light spots, used for shooting waterfalls, light paintings, car tracks and other subjects. 2. ** Choose according to the subject ** - When shooting people or moving objects, the shutter speed can be set to more than 1/200s to ensure that the moving objects are shot clearly. The slower the speed, the more likely it is to have a smear when shooting moving objects. ** 3. Light sensitivity (USB)** 1. ** Relationship with image quality and brightness ** - The higher the value, the brighter the photo, but the more noise, the more sensitive the camera was to light. The lower the value, the darker the photo, and the less noise, the less sensitive the camera was to light. Usually, it was manually set to a lower value, such as 100 - 400, to ensure the clarity of the image. 2. ** Adjusts according to lighting conditions ** - When the light is strong, the USB can be set to 100, and when the light is weak, the USB can be set to 400 or less, and try not to exceed 800. ** 4. Mode Wheel ** 1. ** Automatic exposure mode ** - The camera automatically selected the exposure parameters according to the brightness of the captured image. The photographer only needed to press the shutter to shoot. 2. ** Semi-auto exposure mode (P, Av, Tv)** - ** Program auto exposure mode (P)**: Control the brightness of the image through exposure compensation. If the image is dark, increase the exposure compensation. If the image is bright, decrease the exposure compensation. - ** Aperture priority mode (Av)**: Set the aperture manually. The USB can be set manually or automatically. The shutter speed will change automatically according to the light measurement results. The brightness of the image will be controlled by exposure compensation. It is suitable for shooting still objects. - ** Shutter priority mode (Tv)**: manually set the shutter speed, the USB can be set manually or automatically, the aperture is automatically adjusted according to the light measurement results, and the brightness of the image is controlled by exposure compensation. Different scenes had different settings for the camera lens. For example, when shooting scenery (M file), you can set the settings to around 100, F8, and 1/200 on a sunny day, and 400 on a cloudy day. For shooting still life, flowers, fish and insects (Grade A), aperture F5.6 and above should be as large as possible, focal length 50 and above, strong light source should be 100, weak light source should be 400 and below, try not to exceed 800. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
Household camera lens detailed parameters
The following are the detailed parameters of some home camera lenses: ** 1. Pieces and resolution ** 1. ** Pieces affect image quality **: Pieces are an important factor in determining the image quality of the camera. The higher the number of pixels, the higher the resolution. Theoretically, the better the image quality, but the cost and practical requirements must also be considered. The mainstream home camera's resolution was above 1080p (2 million resolution). Generally, 2 million resolution indoors could meet the demand, and 4 million resolution outdoors was more suitable. 2. ** resolution and network transmission **: The basic parameters of resolution are the number of pixels.For home cameras that transmit images through the network, the balance between image clarity and network speed is very important. It is not that the higher the resolution is, the better it is because the higher the resolution, the larger the storage space required and the higher the requirements for home network bandwith. The resolution of mainstream home cameras on the market is generally between 2 million and 4 million. This range can meet the daily needs of observing details such as faces and movements. ** 2. Perspective ** 1. ** Small room option **: If the room is small, you can choose a wide-angle 2.8mm card machine. 2. ** General situation **: Most household products support the rotation of the lens. When the camera is installed in the corner of the wall, you can see the front at a 90-degree angle. The indoor camera can be rotated horizontally (left and right) at about 340 - 360 degrees, and vertically (up and down) at 90 - 120 degrees. It can basically achieve 360-degree surveillance without blind spots. 3. ** Focus of the lens **: The focal length of the lens is the core parameters, which determines the range and distance of the monitoring angle. The home camera had a wide angle of view. The focal length range was usually between 2.8mm and 12mm. It could monitor the environment within a range of 3 - 20m. The zooming lens could adjust the focal length according to the distance of the observed object. ** 3. Radio band ** Pay attention to matching the frequency band of the home router. It supports 2.4G or 5G (not 5G/4G for mobile phone signals), and it is best to support dual-band. ** 4. Night Vision Function ** 1. ** infrared night vision **: Most home cameras support infrared night vision. They illuminate objects with infrared fill light and use the infrared light reflected by the object to form an image. When the light is dim, the image can be clearly formed, but the image has no color, and details such as faces are difficult to see clearly. 2. ** Full Color Night Vision **: Able to display a colorful image at night. The details are better than infrared night vision. However, the fill light may be switched on and off frequently when moving objects are detected at night (mosquitoes are easy to attract in summer). You need to choose according to your needs. ** 5. Storage Method ** 1. ** Local Storage **: Save the video in the built-in memory card of the camera. The advantage is that you don't have to pay. The disadvantage is that the storage capacity is limited. If the card is damaged, the video will be lost. If the camera is damaged, the video will also be lost. 2. ** Cloud Storage **: The video is stored in the cloud server of the product manufacturer. The recording is safe unless the platform fails, but it requires payment. ** 6. Intelligent Function ** 1. ** Movement Tracking **: automatically tracks moving objects and sends real-time alarm messages to mobile phones and other devices. 2. ** Alarm function **: When an abnormal situation is detected, an alarm sound will be immediately emitted and uploaded to the mobile app. 3. ** Voice intercom **: Similar to a walkie-talkie, it can achieve two-way voice communication. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
Details of camera correction parameters
The camera correction parameters include many aspects. The following is a detailed explanation of some common camera correction parameters: ** 1. Regarding lens aberrations correction ** - Distortion correction: This function can be turned on to correct the possible distortions caused by the lens, such as the shape of the object at the edge of the picture. - [Digital lens optimization: Standard mode can be selected to help in the optimization of lens imaging effects and reduce aberrations.] ** 2. Camera-related calibration-related (correction related to obtaining 3D information from 2D images)** - The purpose of camera calibration1: In image measurement and machine vision applications, determine the relationship between the three-dimensional geometric position of the surface point of a spatial object and its corresponding point in the image. The geometric model parameters were obtained through experiments and calculations, and this process was called camera calibration1. It was commonly divided into monocular camera and monocular camera. - Calibrating method: - Based on 3D object reference. - Based on the 2D plane. - Based on 1D linear scaling. - Self-marking. - Commonly used algorithms, such as Zhang Zhengyou's algorithm, have been implemented in the openLV/Matlab. Usually, a standard board was needed in the process of the measurement. The common types of standard boards were Chessboard, Circel-grid, RandPattern, ArUco, ChArUc, etc. The algorithm would require the width, height, and distance of the checkerboard. ** 3. Light and dark field correction (Take the line scan camera DALSa as an example)** - Dark Field (Fixed Pattern Noise (FPM): Fixed image noise correction. When correcting, the value must be between 1GN and 127GN. The correction method was to cover the lens cover so that the field of view was completely black, click Grab to let the camera continue to collect, click Press at the FGN, and the correction was completed when the display area refresh bar began to refresh again. - Bright Field: - Photo-response Non-Uniqueness (Prnu): To correct the image's non-uniform response, the correction must be between 128mn and 254mn. The lithium battery industry usually takes the lower limit of the required value (such as 128) to achieve the best results. The lens must be in an unfocused state during the correction. The correction method was to spread the white paper on the roll surface and tighten it. Then, click Grab to put the camera in a continuous acquisition state, adjust the exposure to make the image gray level around 128, click Prnu, and wait until the refresh was over to complete the flat field correction. - The lens and light source non-uniform correction was also part of the bright-field correction. ** 4. Calibrating the camera (Take the ACR interface as an example)** - Shadow: There is only one slide bar in the shadow area, which is used to correct the color temperature deviation in the shadow area. It can be corrected when there is green and color deviation in the dark area, but it has a certain impact on the tone of the medium tone area. The parameters must be appropriate when using it. - Primary Colors: There are red, green, and blue. Each primary color has two parameters, Hue and Saturation, which can be used to modify the color tone of the photo. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
Single lens reflex camera track parameters
When shooting a car track with a single-lens reflex camera, you can refer to the following parameters: - <strong></strong><strong></strong> - Shutter Speed: Not a fixed value, but depends on the traffic and speed of the car. In sections with more traffic and faster speeds, the exposure time could be shortened, such as 4 seconds to 8 seconds, while in sections with less traffic and slower speeds, the shutter speed often needed to be adjusted to 15 seconds to 30 seconds. When the shutter speed did not exceed 30 seconds, the user could choose manual exposure or shutter priority mode, and when the shutter speed exceeded 30 seconds, the user could only choose B to manually control the shutter speed (usually, the shutter release was needed to control the exposure time). - Aperture: If the shutter priority mode is used, the aperture will be automatically adjusted, but try to control the aperture to around F8 - F11. You can also choose the aperture of F8.0 in the Av mode. In addition, it could be adjusted according to the actual shooting effect. In addition, when taking pictures of the train tracks, one could choose the shutter priority mode or the manual exposure mode. If you use the manual exposure mode, you can also refer to the above shutter speed, aperture, and sensitivity parameters to adjust. At the same time, a tripod was needed to fix the camera position, and the shutter release also helped with the shooting. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
Instantaneous parameters of a single-lens reflex camera
When shooting the jump moment with a single-lens reflex camera, you can refer to the following parameters: 1. ** Shutter Speed **: Set it to TV mode and set the shutter speed to above 1/200S. This way, you can clearly capture the moment when the character jumps up. 2. ** Iso-level: Set it to 100 when the light is good during the day. If it is dusk or when the light is not good, you can set it to automatic to ensure that the exposure of the picture is normal. However, an increase in the Iso-level will affect the quality of the picture. 3. ** Focus Mode **: Set it to continuous autofocus. When shooting, press the shutter button and focus on the person before the person jumps. When the person jumps, the camera will focus on the person continuously to prevent the photo from blurring due to the movement of the person. This method is also suitable for shooting moving objects. 4. ** Shooting Mode **: Set it to high-speed continuous shooting. This way, you can take multiple photos for later screening. In addition, when shooting jump shots, you can also use a low angle to show that the person jumping is higher; focus on the face or body of the subject, and use a high-speed shutter to ensure that the subject is clear, it is best to use single-point focus; You can also use a tripod and adjust it to the lowest position to assist in shooting. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
What do the parameters of the camera lens mean?
The main parameters of the camera lens are focal length, aperture, etc. The following is to introduce their meaning: ** 1. Focus ** 1. ** The focal length of the fixed-focus lens ** - If the focal length of the lens is a number (for example, 50mm), this is a fixed-focus lens. The focal length of the fixed-focus lens was fixed, and it had a fixed angle of view. If one wanted to change the width of the picture, such as making the picture wider or making the distant view larger, they could only do so by moving the photographer's position back and forth. The common focal lengths of fixed-focus lenses were 10mm, 24mm, 35mm, 50mm, 85mm, 100mm, 135mm, etc. 2. ** The focal length of the zoom lens ** - When the focal length of the lens is two numbers (such as 24 - 70mm), this is a zoom lens. It could change the angle of view by adjusting the lens. For the same camera, the larger the focal length number, the smaller the angle of view, which could enlarge the distant scenery; the smaller the focal length number, the wider the angle of view, which could accommodate more information in the picture. For example, a 15 - 45mm lens could provide a wider angle of view than an 18 - 150mm lens, while an 18 - 150mm lens had a stronger zooming ability than a 15 - 45mm lens when shooting long-range shots. - The camera frame and the focal length of the lens jointly determined the angle of view, and the lens of the same focal length had different angles of view on different frame cameras. For the sake of comparison, the concept of equivalent coefficient and equivalent focal length was introduced (equivalent focal length = focal length × equivalent coefficient). Whether the equivalent focal length was calculated or not depended on the camera frame. ** 2. Aperture ** 1. ** Aperture size indicates ** - The maximum aperture of the lens could be written in many ways, such as 1:2.8, f/2.8, and F2.8. The aperture value is marked with the letter f. The smaller the f value, the larger the aperture. The larger the number, the smaller the aperture (for example, F1.4>F2.8>F4). 2. ** The effect of the aperture on the image ** - The aperture mainly affected the image. For the same camera and the same focal length, the larger the aperture, the shorter the depth of field. In portraits and still life shots, it was easier to blur the background and highlight the subject. - In addition to affecting the depth of field, the aperture, shutter, and sensitivity also formed the three elements of exposure. A large aperture helped to increase the shutter speed and increase the success rate of hand-held shooting when the subject was moving at high speed or in low-light environments. 3. ** Permanent Aperture and Non-Permanent Aperture (Floating Aperture)** - ** Permanent Aperture ** - For a zoom lens, if the lens aperture was a number (such as F2.8), it meant that it could reach F2.8 aperture over the entire focal length range. For example, the 24 - 70mmF2.8 was a constant aperture lens. Generally, a constant aperture lens could achieve better image quality. When the aperture was set to the maximum, the zooming operation would not affect the exposure of the constant aperture lens. - ** Non-constant Aperture (Floating Aperture)** - If the lens aperture was two numbers (for example, F3.5 - 5.6), the maximum aperture of the lens would change during zooming. For example, 28 - 70mm F3.5 - 4.5 was a floating aperture lens. The longer the focal length, the larger the aperture value. The aperture of the 70mm segment would be F4.5. The lens of a non-constant aperture lens had a small diameter, low weight, and was cheap, but the focusing speed was relatively slow. Due to the small aperture, it was not conducive to taking shallow depth of field photos. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
Single lens reflex camera parameters tutorial
The following is a tutorial on setting the parameters of the DSLR camera in different shooting scenes: ** 1. Portrait Shooting ** 1. ** Still Portrait ** - ** Shooting mode **: Aperture priority mode (LV) can be used. - ** Aperture Setting **: Use a large aperture, such as F2.8, to create a blurred background effect and highlight the main character. - ** Focus **: Focus on the eyes or key parts of the character. If you want to shoot a close-up of the character, the sharpness is moderate, and you can use the middle composition. When matching the character and the background, you can use the medium aperture F8 to highlight the character and the background. The focal length is the widest. The composition uses the three-point method or the golden section method. - ** Light sensitivity (USB)**: Try to set it as low as possible, such as USB 100. 2. ** When the character moves ** - ** Shooting Mode **: Shutter priority mode (TV). - ** Shutter Speed **: Usually set to about 1/250s to avoid blurring. ** 2. Scenery Shooting ** 1. ** Shooting Mode **: You can use P or M files. 2. ** Aperture setting **: Use a small aperture, generally F5.6 or smaller, such as F8 (on sunny days, around 100, F8, 1/200; on cloudy days, around 400). 3. ** Using the camera ** - ** Wide-angle lens **: It is suitable for taking photos of large scenes, such as buildings and landscapes. It has a short focal length, wide angle of view, and deep field of view, which can produce a strong visual impact. - Medium focus lens: It has the smallest distortion in the photo, can accurately reflect the shape of the subject, and is easy to design into a large aperture. - ** Telephoto lens **: Long focal length, small angle of view, large image on the film, suitable for shooting distant objects. 4. ** Composing **: To avoid placing the most attractive scenery in the middle, you can use the three-point composition, frame composition, symmetrical composition, diagonal composition, white space composition, etc. 5. ** Note **: It is recommended to bring a tripod to prevent the photo from blurring due to shaking. ** 3. Shoot flowers and plants ** 1. ** Shooting Mode **: Aperture priority mode (LV). 2. Aperture setting: Choose a large aperture lens or a 100-millimeter lens. The aperture should be large so that the depth of field is shallow and the subject can be highlighted. 3. ** Composing **: Use a central composition or a nine-square composition to place the object you want to shoot in the center of the picture. ** 4. Pet Shooting ** 1. ** Shooting Mode **: You can turn on the P automatic gear and start continuous shooting, or use the shutter priority mode (TV). 2. ** Shutter speed (in TV mode)**: Set it to 1/200s or higher. ** 5. Shooting Night Scenery ** 1. ** Shooting Mode **: Aperture priority mode or M mode can be used. 2. ** Aperture setting **: Use a small aperture, such as F10 or smaller. 3. ** Light sensitivity (USB)**: Normally set to USB 100. 4. ** Shutter Speed **: For example, 1/30s (Shutter 1/30, Aperture F10, SPD 100). 5. ** Metering Mode **: Can be set to the Evaluation Metering Mode (Matrix Metering Mode), and the exposure compensation can be reduced appropriately. 6. ** Ancestors **: Requires a tripod. If possible, you can use the shutter release to shoot. ** 6. Silhouette Shooting ** 1. ** Shooting Mode **: P-file is fine. 2. ** Metering **: Use spot photography to measure the highlight, then add or subtract the exposure according to actual needs, and place the focal point at the bright spot. ** 7. Setting the camera parameters for other shorthand scenes ** 1. ** Exterior Portrait **: 1/100s, Iso100, F1.2 - 2.8. 2. ** In-room portrait **: 1/80s, 1500, F2.8 or below. 3. ** Baby/Pet Shooting **: Above 1/200, USB 100 - 800, F1.4 - 5.6. 4. ** Still life/gourmet photography **: 1/80s- 1/200s, USB 100 - 400, F1.2 - 4. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>