The application of the camera aperture and shutter's sensitivity and color temperature

Aperture, shutter, and sensitivity are the three elements of exposure in photography. They are related to each other and affect the exposure effect of the photo. The following is their algorithm relationship: 1. ** The relationship between aperture and the amount of light entering and depth of field ** - The aperture was a device that controlled the amount of light that entered, and it was represented by the "f + number." The smaller the number after f, the larger the aperture, the more light entered, and the brighter the picture; on the contrary, the larger the number, the smaller the aperture, the less light entered, and the darker the picture. For example, the aperture of f/1.2 was larger than the aperture of f/5.6. At the same shutter speed and sensitivity, the picture shot with the aperture of f/1.2 would be brighter. - At the same time, the size of the aperture also affected the depth of field. The larger the aperture, the lighter the depth of field (the more blurred the background); the smaller the aperture, the deeper the depth of field (the clearer the background). 2. ** The relationship between the shutter and the amount of light entering and the shooting effect ** - The shutter was a device that controlled the time when light shone on the sensor. The shutter speed was measured in seconds, such as 1 second, 1/2 second, 1/4 second, and so on. The higher the decimal, the faster the shutter speed, the shorter the time the light passed through the shutter, and the darker the picture; the smaller the decimal, the slower the shutter, and the longer the time the light passed through the shutter, the brighter the picture. For example, a shutter speed of 1/1000s is faster than a shutter speed of 1/30s, and the picture taken with a shutter speed of 1/1000s will be darker. - The shutter speed also affected the shooting effect. The faster the shutter speed, the clearer the image of the high-speed moving object could be fixed, and the slower the shutter speed, the better the trajectory of the moving object could be captured. 3. ** The relationship between sensitivity, light input and image quality ** - Light sensitivity (USB) refers to the sensitivity of the camera to light. The smaller the sensitivity value, the weaker the sensitivity of the camera's sensor to light, and the darker the picture; the higher the sensitivity value, the stronger the sensitivity of the camera's sensor to light, and the brighter the picture. For example, the sensitivity of an image taken with an Iso100 was lower than an image taken with an Iso800. At the same aperture and shutter speed, the image taken with an Iso100 would be darker. - The lower the sensitivity, the finer and clearer the image quality, while the higher the sensitivity, the rougher and grainy the image quality. 4. ** The comprehensive relationship between the three ** - Increase the aperture by one while maintaining the same exposure. If the light entering the shutter was doubled, the shutter speed would be increased by one (the light entering time would be halved) or the sensitivity would be decreased by one (the sensitivity would be halved); if the aperture was decreased by one (the light entering time would be halved), the shutter speed would be decreased by one (the light entering time would be halved) or the sensitivity would be increased by one (the sensitivity would be halved). For example, if a photo taken with an f/4 aperture, 1/100s shutter speed, and an Iso200 had a normal exposure, if the aperture was adjusted to f/5.6 (the aperture was reduced by one stop), in order to maintain the normal exposure, the shutter speed could be adjusted to 1/50s (the shutter speed was reduced by one stop) or the sensitivity could be adjusted to Iso400 (the sensitivity was increased by one stop). <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>

To adjust the aperture and shutter of a camera outdoors, many factors needed to be taken into account. First of all, he had to clarify the shooting requirements. For example, if he wanted to highlight the main subject and blur the background, or if he wanted a clear landscape photo. Then, evaluate the lighting conditions. If the light is sufficient, you can choose a smaller aperture (such as f/8, f/11, etc.) and a faster shutter speed (such as 1/250 seconds or more); if the light is dim, you need to consider increasing the aperture or reducing the shutter speed. If you want to get a shallow depth of field, that is, the background is blurred and the main body is clear, you can choose a large aperture (such as f/1.8, f/2.8, etc.); if you need a clear photo before and after, such as landscape photography, you should choose a small aperture (such as f/8 - f/11, etc.). In the case of sufficient light, a faster shutter speed (such as 1/250 seconds or more) can freeze the dynamic moment and reduce the blurring caused by hand shake or object movement. In the case of dim light or when you need to record the movement trajectory, a slower shutter speed (such as a few seconds to tens of seconds) is necessary, but you need to pay attention to using a tripod or find other stable methods to avoid blurring the photo. At the same time, the sensitivity of the image was also an important factor affecting the exposure. When the light was insufficient, the exposure could be increased by increasing the sensitivity of the image, but it was important to note that a high sensitivity of the image could cause noise. Different camera and lens combinations, as well as different shooting environments, may require different aperture and shutter speed combinations. Therefore, it is recommended to practice shooting more. By adjusting the aperture and shutter speed combination, observe the photo effect, and find the most suitable setting for the current environment. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>

You can choose different color temperature settings for different shooting scenes. If you want to create a cool atmosphere, you can set the color temperature to> 5000K (the color is slightly blue); if you want to achieve a refreshing and bright atmosphere, you can set the color temperature to 3300 - 5000K (the middle tone, white); if you want a warm and stable atmosphere, you can set the color temperature to <3300K (the color is slightly red). For example, when using cameras such as the Alexa Mini LV, Canon C500mkII, SonyVenice, and SonyFX9, you can set the camera's color temperature to 4300K in order to pay attention to the parameters and functions first. In addition, different lighting environments also have corresponding color temperature references. Red and yellow lighting environments can be set to 3200K; normal sunlight or indoor fluorescent lighting environments (compared to 3200K, this light is bluer) can be set to 5600K; when the sunlight is strong on sunny days, 5600K + gray film can be used. White balance technology can be used to adjust the color temperature of indoor and outdoor environments. It allows the camera to restore white objects to ensure that white objects are still white in different lighting environments. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>

In cinematography, the aperture and shutter had their own specific uses. ** 1. Aperture ** 1. ** Depth-of-field and rendering ** - The aperture not only controlled the light coming into contact with the sensor, but more importantly, it controlled the depth of field and the way the image was rendered. In cinematography, from one shot to the next, the depth of field needed to be consistent. For example, if you prefer shallow focus, you should maintain this style throughout the entire shooting process; if it's deep focus, you should also maintain it throughout the entire shooting, otherwise the lens image will appear incoherent. 2. ** In terms of exposure control ** - Most cinematographers used the aperture as the primary method of changing exposure, keeping the aperture consistent or close to consistent in every scene. The cinematographer would decide the ideal aperture according to the scene to be shot, so that the aperture of each shot was close to ensure that the physical rendering and depth of field of the shot matched each other. ** 2. Shutter Speed ** 1. ** Eliminate blurred motion ** - For a cinematographer, the shutter speed was mainly used to eliminate blurred motion in a movie. If the frame rate was 24 frames per second, the shutter speed would usually be set to 1/48 seconds or 1/50 seconds. For a frame rate of 60 frames per second, the shutter speed would be 1/60 seconds or 1/125 seconds, depending on the subject. 2. ** General settings ** - Most of the time, cinematographers shot at 24 or 25 frames, maintaining a shutter speed of 1/48 or 1/50 of a second. This was different from still life photographers. In cinematography, there was no need to frequently change the aperture and shutter speed to create a cinematic exposure effect. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>

The following applications were available when the large aperture mode of the Huawei mobile phone was turned on: 1. ** Protruding the main body **: When shooting portraits with simple backgrounds (such as walls and grass as the background), still life flowers and plants, you can blur the image to highlight the main body (shallow depth of field effect). Through the built-in AI algorithm, you can simulate the shallow depth of field effect of the camera lens with a large aperture. The smaller the value (such as F0.95), the smaller the depth of field, the more blurred it would be. Conversely, the larger the value, the greater the depth of field, the clearer it would be. 2. ** Quick Focus Capture Moment **: For example, in a crowded journey, a large aperture can help you quickly capture the image and freeze the wonderful moments. At the same time, it can avoid the blurring of the image caused by the lens shake or slow focus. 3. ** Shooting in low-light environments **: Like at night or under dim light, the large aperture mode can customize the brightness of the photo to increase the amount of light entering, allowing the photographer to quickly capture the brightest moment in low light. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>

When shooting in a museum, the aperture and shutter settings needed to take into account many factors. ** 1. Aperture ** 1. ** Large Aperture (Small F Value)** - A large aperture could increase the amount of light entering the museum in a dimly lit environment, making the photo brighter. For example, in some museum scenes where the light was not good and it was not suitable to use a flash (because it might cause light damage to the cultural relics), if a large aperture lens such as Canon 50mm f/1.2L was used, it could guarantee enough light to take clear photos. - A large aperture could make the depth of field shallow, and the background was easy to blur. When taking close-ups of an exhibit in a museum, you can highlight the main body of the exhibit and blur out other interfering elements in the background. 2. ** Small Aperture (Large F Value)** - If you want to make the entire scene clear, such as taking a full picture of a museum exhibition hall or displaying a display scene of multiple items, you can use a small aperture. A small aperture would allow less light to enter, and the overall picture would be a little darker, but it could obtain a larger depth of field, ensuring that the front and back of the picture were clear. ** 2. Shutter ** 1. ** High-speed shutter (Denominator large)** - If there were visitors walking around in the museum or if they wanted to capture moving elements such as staff, a high-speed shutter could be used to clearly freeze the moving object. For example, if the shutter speed was set to 1/640 second, it would be able to capture the instant motion better. - With a high-speed shutter, the amount of light passing through the shutter would be shorter, and the image would be darker. Therefore, in a dimly lit museum environment, a high-speed shutter might need to be used with a large aperture or high sensitivity to ensure the brightness of the photo. 2. ** Slow Shutter (Denominator Small)** - A slow shutter speed would allow light to enter the camera for a longer time and increase the amount of light entering the camera. It was suitable for use in a museum with insufficient light. However, if one held the camera, the slow shutter speed would easily cause the image to blur due to hand shake, unless the camera had a good anti-shake function or a tripod was used. - In the museum, if you wanted to capture the artistic effect of light and shadow, such as the light trajectory through the stained glass, you could use a slow shutter, but you had to be careful not to capture dynamic interfering objects to avoid blurring the picture. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>

In the aperture priority mode of a Sony-grade camera (A or Av), the shutter speed was automatically adjusted by the camera to ensure that the photo was exposed correctly. The user could not directly adjust the shutter speed. In this mode, the user can freely set the aperture size, and the camera will automatically determine the appropriate shutter speed based on factors such as the aperture setting, lighting conditions, and the USB value (if the USB is set to auto). If you wanted to manually adjust the shutter speed, you needed to adjust the camera mode to either Shutter priority mode or Manual mode. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>

Aperture, shutter, and USB settings needed to be considered based on the scene, the subject, and the desired effect. First, the setting of the USB. If there is enough light, in order to maintain the quality of the photo, you can set the USB to a lower value, such as 100, 125, 200; if the environment is dark, you can increase the USB to 800, 1600, 3200, but the higher the USB, the more obvious the noise, so you should use a high USB with caution. Then, he considered the aperture. The size of the aperture affected the amount of light entering and the depth of field. A large aperture (such as f/1.4) was suitable for use in dim light and could produce a shallow depth of field effect (commonly used for portrait photography); a small aperture (such as f/8 - f/11) was suitable for use when there was sufficient light to make more scenes clear (commonly used for landscape photography). Then the shutter. The shutter speed affected the motion blur and the amount of light that entered. A high-speed shutter (such as 1/1000s) was suitable for shooting high-speed moving objects. It could freeze the moment, but the amount of light entering was small. A slow shutter (such as 1/50s) had a lot of light entering. It was suitable for shooting scenes that required motion blur effects. However, if the shutter was too slow, the hand-held shooting might cause the picture to be blurred due to hand shake (when the shutter was lower than the safety shutter). In this case, the shutter speed could be increased by increasing the aperture or enlarging the aperture. When adjusting these three parameters, one had to pay attention to the relationship between the three to achieve the appropriate exposure. For example, under the condition that the exposure value is constant and the shutter speed is constant, the aperture value increases, and the USB needs to be increased; the aperture value is constant, and the shutter speed increases, and the USB needs to be increased; the USB value is constant, and the aperture value increases, and the shutter speed needs to be decreased. And in actual shooting, you can start from the semi-automatic mode (aperture priority or shutter priority) to practice, gradually master the deployment of the three, and finally realize the proficiency of setting these three parameters in manual mode according to different shooting needs. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>

The color temperature settings of the Sony-PM-EX1R camera are as follows: 1. ** Manual white balance setting ** - There were three gears. Memory A, the default setting is "Manual White Balance"; Memory B, the default setting is "ATW Automatic Tracking White Balance", it can also be set to "Manual White Balance" in the menu (set the menu of Memory B to Mem.) - There was also the color temperature setting. The color temperature could be set by adjusting the K value. The K value could be adjusted in the PK value setting menu. - There was a white balance offset setting, which could also be adjusted through the pp-value menu. The manual white balance of Memory A and B could be fine-tuned. 2. ** Automatic White Balance ** - You can use Memory B to select automatic tracking white balance (ATW automatic white balance) in the menu, and you can adjust the speed of ATW automatic white balance in the menu. - When Memory B was set to ATW to automatically track the white balance (Memory B's menu was set to ATW), the camera automatically adjusted the white balance according to the light. It would change according to the color temperature of the surrounding light source. - If you want to maintain a fixed white balance value during the auto white balance, the EX1R provides the ATW lock function. This function can be assigned to any of the four user defined buttons, making it easy to control the white balance lock function at any time. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>