The influence of camera parameters on the color of the picture
Many of the camera's parameters would affect the color of the picture. First of all, the white balance was used to restore the true color of the object on the scene to ensure that the true color of the object was accurately restored. The black, gray, and white were reflected on the Histogram. The white balance shift could create a color tone atmosphere and create a background color for the picture, allowing the colors to match properly, giving it a sense of liveliness and artistic creativity. The color tone parameters could adjust the color of the entire picture. When it was adjusted in the negative direction, the overall picture would be red, and when it was adjusted in the positive direction, the overall picture would be yellow, which was suitable for fine-tuning skin color objects. The saturation level was used to control the accuracy of the colors presented due to the direction of the light, the intensity of the light, and the distance between the camera and the subject being photographed. For example, when the light was strong at the shooting scene, there were many objects being photographed, and the object received less light (flat light and scattered light). When shooting with a telephoto lens, the saturation level could be set higher. Otherwise, it could be set lower. In addition, different brands of cameras may have color tendencies, such as Nikon yellow, Canon pink, Sony green, Fuji red, but the color bias of the light and the camera parameters were the main factors that affected the color performance of the photos. Read more exciting novels for free
The parameters of the camera
There were many parameters for the camera lens. The following were some common parameters: 1. ** Focus **: It determines the degree of zooming of the lens. A longer focal length was used for long-distance shooting. For example, a telephoto lens could be used to shoot long-distance topics such as sports competitions, wild animals, aircraft, etc., and it could also enhance the background blurring effect. A shorter focal length was used for wide-angle shooting, such as wide-angle lenses for landscape photography, architectural photography, and crowded indoor spaces. 2. ** Aperture **: For example, the main camera of the Vivo X200 Pro is equipped with a large aperture of f/1.57, which helps to take brighter and clearer photos in dark environments. Its periscope telephoto lens has an aperture of f/2.67, which can ensure the clarity and details of the picture when shooting telephoto. The size of the aperture affected the amount of light entering, depth of field, and so on. 3. ** Pieces **: It is one of the important indicators to measure the quality of the camera. For example, the main camera of the Vivo X200 Pro is expected to use a 50-million-pel large sensor, and the periscope telephoto lens is equipped with a 200-million-pel periscope telephoto lens. 4. ** Photosensor **: For example, the sensor of the HD - 3000 camera is a LCD; the main camera of the Vivo X200 Pro has a 1/1.28-inch sensor, and the periscope telephoto lens has a 1/1.4-inch base. 5. ** View angle **: For example, the helmet camera lens is a 3.7mm pinhole lens with a 90-degree view angle. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
camera sensitivity parameters
The parameters related to the camera's sensitivity were the light sensitivity and the minimum illumination. In terms of light sensitivity (USB), the lower the USB, the clearer the photo would be, and the less noise there would be. In the video recording mode, the setting of the sensitivity was related to the camera mode, and the fourth setting was the shutter speed in the camera mode. When the video was being recorded, it became the automatic limit of the sensitivity for time-lapse photography. For example, it could be lowered to 6400 to reduce the value. The minimum illumination is an important indicator to measure the sensitivity of the CCD-based camera. It represents the corresponding environmental illumination when the environmental illumination is reduced to a certain level, so that the video signal level output by the CCD-based camera is reduced to a certain value. For example, when the environmental illumination is reduced to 0.04lx, the output video signal of the CCD-camera is reduced to 50% of the maximum magnitude, then the minimum illumination of the CCD-camera is 0.04x (F1.2), and the minimum illumination of the CCD-camera is related to the maximum relative aperture of the lens used. When providing the minimum illumination of the camera, the relative aperture of the lens during the test should be indicated. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
Sunset camera parameters
Here are some of the camera settings for shooting sunsets: ** 1. Exposing Mode ** 1. ** Aperture priority mode (Av or A)** - The aperture can be set between F8 - F16. In this mode, the camera automatically adjusted the shutter speed according to the set aperture, allowing better control of the depth of field and clear images of both near and far scenes. 2. ** Manual mode ** - Setting the parameters manually could allow them to respond to different scenarios more flexibly. ** 2. Light sensitivity (USB)** - Normally, it was set to between 100 - 400. If you wanted a more detailed picture with less noise, you could set it to 100 or lower. A low IQ would ensure the quality of the image in a well-lit sunset scene. ** 3. Metering Mode ** 1. ** Spot Metering ** - He changed the focus mode to center single-point focus and the light measurement mode to spot measurement. Then, he aimed at the clouds around the setting sun. Be careful not to focus on the building or the sun, or the image will be too bright or too dark. 2. ** Focus Average Metering ** - You can also set the measurement mode to focus on average measurement, which takes into account the key areas of the picture and the overall lighting situation. ** 4. Shutter Speed ** - If you use manual mode, the shutter speed can be set to 1/30 second or longer (depending on the shooting needs). ** 5. White Balance ** - You can choose the daylight white balance (or choose the appropriate color temperature value yourself, such as adjusting to the fluorescent light cool white can create a purple-pink romantic atmosphere, making the shooting scene more like the sunset atmosphere). ** 6. Shot ** - According to the shooting needs, you can choose 18 - 24mm or 100 - 400mm lenses. ** 7. Other Equipment and Points for Attention ** 1. ** Tripod ** - It's best to have a tripod to hold the camera, especially when using a slower shutter speed or taking long shots (such as time-lapse photography) to avoid blurring the picture due to camera shake. 2. **ND fade filter (option)** - If there was a ND filter, it could better balance the exposure difference between the sky and the ground. If not, try shooting the scene twice to mix the exposure. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
External parameters of the camera
The external parameters of the camera were parameters in the world coordinate system, mainly referring to the rotation and translation matrix between the camera systems, such as the position and rotation direction of the camera. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
Nightclub camera parameters
To take photos in a dark environment like a nightclub, the camera parameters were set as follows: - Aperture: If you want to ensure the depth of field (clear front and back), the aperture can be set to a small aperture, such as F8 - F13. However, in some special cases, if a large aperture is needed to increase the amount of light, a relatively large aperture value such as f/4.5 (Ref. 3) may be used, or a large aperture lens such as f/1.8 (Ref. 6) may be used to adapt to dark environments. - ** Light sensitivity (USB)**: If the camera has good noise control, such as the Nikon Z6 II (Ref. 6), you can also get a clear picture in dark and night environments with high sensitivity. You can increase the USB. However, in general, the higher the USB, the more noise it may produce. If a tripod or stabilizing device is allowed, try to use a low USB (such as 100 USB) to ensure the quality of the photo (reference 1). However, if you can't use a tripod and you want to avoid blurring the photo, you can increase the IQ appropriately, even if it will cause some noise (Ref. 1). For example, the information in the third document stated that the value of the spell was 3200. - ** Shutter Speed **: If the camera is fixed (such as using a tripod), you can use a longer shutter speed to get enough exposure, such as 20 seconds (Ref. 1). However, if it was hand-held, the shutter speed needed to be determined according to the anti-shake performance of the camera and the movement of the subject to avoid blurring the photo. A faster shutter speed such as 1/200 second (Ref. 3) might be used. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
What are the camera parameters?
The camera's parameters were divided into two parts: 1. * * Internal reference: - focal length (fx, fy, generally equal): It is related to the optical characteristics of the camera lens and affects the zooming in or out of the image. - Coordinates of the principal point (x0, y0, relative to the imaging plane): In the ideal case, the optical axis of the lens passes through the middle of the image, but in reality, there is an error due to the installation accuracy. This is used to describe this error. - Axis tilt (s, 0 in the ideal case): A variable that reflects the difference between the camera's x-direction and y-direction size reduction ratio. It can convert the length measured by the number of pixels into the length measured by other units in three-dimensional space. It can also indicate the difference between the x-direction and y-direction scale transformation. - Distortion parameters (including the distortion of the radius and the direction of the cut): This is used to describe the distortion effect produced when the lens maps a three-dimensional space straight line onto the image. Under ideal circumstances, the lens should map the straight line into a straight line, but there is actually a deviation. 2. * * External reference **: - Rotation Matrix: It is used to describe the direction of the coordinate axis of the world coordinate system relative to the camera coordinate axis. It is used to determine how the world coordinate point will rotate and fall on the camera coordinate point. - Translational Matrix: It described the position of the origin of space in the camera coordinate system, which was the relevant parameters of the world coordinate point after translation to the camera coordinate point. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
Recording parameters of camera
The camera recording parameters mainly included the following aspects: 1. ** Video format **: There are two types of video, namely, feast and PAL. China (Europe)'s television industry standard was PDA, while the United States (Japan, South Korea, and other countries)'s television industry standard was NSA. The video frame rate that could be selected was 25 frames per second (50 frames, 100 frames) in the PDA format, and 30 frames per second (60 frames, 120 frames) in the NSA format. It was recommended to choose the Polar format for filming in China to avoid the phenomenon of light strobing. 2. ** resolution **: It refers to the number of the number of the displayed image in each picture. It is usually expressed by the product of the number of horizontal and vertical images (for example, 1920X1080) or the number of vertical images (for example, directly marked as 1080). The higher the value, the finer the image and the better the quality. 3. ** frame rate **: For example, 1080P 60fps, 1080P 30fps, etc., often appear together with the resolution. 4. ** Bitrate (Bitrate)**: This is also a setting that needs to be selected before shooting a video. 5. [** USB (Light Speed)**: Can be adjusted in professional video mode or movie mode. When the USB is low (e.g. around 100), the picture will be more delicate, with less noise and higher contrast. However, high sensitivity will easily produce noise. After determining the shutter and aperture, the USB is mainly used to coordinate the light in the picture.] 6. ** Shutter Speed **: Normally, the shutter speed is twice the number of frames. For example, if the video format has a frame rate of 25 frames, the shutter speed can be set to 50. If the shutter speed is lower than this value, the video will have a serious smear effect. If the shutter speed is higher than this value, the image will be clearer. 7. ** Aperture **: The aperture size affects the depth of field effect of the picture. The smaller the aperture, the larger the value, and the deeper the depth of field. The larger the aperture, the smaller the value, and the lighter the depth of field. For example, F5.6 was easy to shoot with a shallow depth of field (the subject was clear and the background was blurry), while F16 had a deeper depth of field. 8. ** Recording format **: If there are no special requirements, you can choose to record a 1920*1080 25 frame MOV format HD video. If there are special requirements for zooming in, you can choose 4K or other format. In addition, when shooting with multiple cameras, it was recommended to set up a unified video recording format to reduce the trouble in the later stages. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
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>
Setting parameters of the studio camera
When shooting in the studio, the camera could be set to manual mode (M-stop), the aperture value could be set to f11 or f15, the sensitivity could be set to 100, and the exposure compensation could be set to-0.5E. In addition, if you wanted to control the studio lights to flash when shooting portraits in the studio, you needed to add a wireless flash trigger on the camera to connect to the wireless receiver on the studio lights. This way, when the shutter was pressed, the studio lights could light up at the same time. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
How to change the camera parameters?
Here are some common camera settings: ** 1. Setting of the light sensitivity ** 1. ** Manual adjustment **: If you want to set it manually, you can set the USB to 100 for daily situations where there is sufficient light and you want clear image quality (low noise). In low-light situations such as at night and when there is no flash to assist in shooting, the value may need to be increased. However, the higher the IQ, the more noise there was. 2. ** Automatic setting **: It can also be set to the STAR (Automatic Light Speed). Nowadays, many cameras have better high-sensitivity capabilities, and the automatic setting can usually meet the needs of daily shooting. ** 2. Shooting Mode Setting ** 1. ** Automatic mode or P-file (automatic program mode)**: suitable for daily snapping, recording life, travel, and other topics. 2. ** Aperture priority mode **: This mode is recommended for shooting subjects that require depth of field (background blurring effect), such as portraits, sceneries, and still life close-ups. 3. ** Shutter priority mode **: This mode should be selected for shooting sports, such as sports, slow door shooting, etc. 4. ** Manual exposure mode **: It can be used for more operation or in more complicated shooting environments. ** 3. White Balance Setting ** Generally, you can set the white balance to "AWB", which can basically restore the true color of the environment. If you want to adjust the environment, you can adjust the color temperature parameters in the later stages, or when shooting special scenes (such as special color effects in specific lighting environments), you can use the built-in scene mode, manually adjust the K value, and manually control the white balance. ** 4. Photometering settings ** 1. ** Metering Evaluation (Matrix Metering, Average Metering)**: You can choose this mode most of the time. It measures the entire frame and can meet the requirements for most scenes. 2. ** Central Average Metering **: Metering area is about 1/3 of the middle of the picture. It can be selected for specific shooting needs. 3. ** Spot Metering **: A single spot of about 3% - 5% of the image is used for accurate measurement of specific subjects. ** 5. Focus setting ** 1. Single-point autofocus AF-S: Focus once by pressing the shutter halfway. It is commonly used for shooting still objects. 2. ** Servo-autofocus AF-C **: Commonly used when shooting moving subjects. Half-pressing the shutter can maintain the tracking focus, suitable for snapping photos. 3. ** Smart autofocus AF-A **: Automatic selection of AF-S or AF-C, depending on whether the subject is moving or still. 4. ** Manual Focus **: Manual adjustment of the focus ring is used when autofocus is unavailable or there is an error. ** 6. Setting of exposure compensation ** In automatic mode, aperture priority, shutter priority, and other modes: 1. When the brightness of the photo was moderate, it was enough to keep it facing the "0" position. 2. When the photo was dark, the exposure compensation was increased. 3. When the photo was too bright, the exposure compensation was lowered. And remember the rule of "white plus black minus". ** 7. Setting the photo format ** 1. **JPEG format **: suitable for photos that do not require post-processing, such as daily travel photos. It can be directly printed and takes up less memory. 2. * * ** 8. Setting the photo style ** For new photographers, it is recommended to choose the "standard" style for daily shooting. The camera has a variety of photo styles built in. If you have special needs or want to try out different effects, you can make other choices. ** 9. Driving Mode Setting ** 1. ** Single Shot **: Choose Single Shot Mode for most scenes. Press the shutter button to take a picture. 2. ** Continuous Shooting **: You can consider choosing the continuous shooting mode when shooting exciting scenes and capturing moving moments. 3. ** Delay selfie **: Can be used to reduce camera shake when taking selfies or slow shots (to avoid shaking caused by pressing the shutter). ** 10. Setting of focal length (for the zoom lens)** 1. When you want to shoot a wider field of view, adjust the lens zoom ring to the minimum. 2. If you want to take a picture from afar, just stretch the lens. Moreover, the depth of field of a photo taken with a wider focal length was greater, and the depth of field of a photo taken with a longer focal length was shallow. Different brands and models of cameras might have different operation procedures for setting parameters, but the basic principles and parameters were similar. The specific operation can be adjusted according to the menu interface of the camera. For example, some cameras may need to enter the menu-Shooting settings-Light sensitivity settings to adjust the value of the USB, enter the menu-Focus mode settings to select different focus modes, and so on. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>