Photography is an art that involves many elements, including exposure and resolution. To help photographers calculate the exposure and resolution of their cameras, we present the Exposure and Resolution Calculator. This calculator is a useful and easy-to-use tool that can be accessed online from anywhere. With it, you can ensure that your photos have the proper exposure and resolution, resulting in superior quality images.
Exposure refers to the amount of light hitting the camera's sensor and is determined by the aperture, shutter speed, and ISO sensitivity. Resolution refers to the number of pixels in the image and is determined by the size and quality of the camera's sensor and the chosen resolution.
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Exposure and Resolution Calculator
Fill in the data below to make the calculations, if you don't know what data to fill in, instructions follow after the calculator. Here is our Exposure and Resolution calculator:
How to use the Exposure and Resolution Calculator
To use the calculator, fill in the fields. Below is an explanation of each field in the calculator:
- Aperture aperture (f/stop): The aperture of the diaphragm controls the amount of light that enters the camera. The smaller the f/stop number, the wider the aperture and the more light entering the camera. For example, f/2.8 lets in more light than f/8.0. Use the input field to enter the diaphragm aperture value.
- Shutter speed (seconds): Shutter speed determines the amount of time the camera exposes the sensor to light. The longer the shutter is open, the more light enters the camera. For example, 1/125th of a second is faster than 1/30th of a second. Use the input field to enter the shutter speed value in seconds.
- ISO sensitivity: ISO sensitivity controls how sensitive the sensor is to light. The higher the ISO number, the more sensitive the sensor is to light and the brighter the image will be. However, the higher the ISO number, the more grainy the image will be. Use the input field to enter the ISO sensitivity value.
- sensor size: Camera sensor size affects image quality. Larger sensors produce higher quality and better resolution images. Select the camera sensor size in the selection field.
- Resolution: Image resolution is the number of pixels in the image. The more pixels in the image, the higher the quality and size of the image. Select the desired resolution in the selection field.
After filling in all the fields, click on the “Calculate” button. The calculator will provide the exposure in EV (Exposure Value) and the percentage of resolution. Exposure EV is a standardized measure of the amount of light in a photographic scene. The resolution percentage shows the amount of pixels in the image in relation to the size of the camera's sensor.
How to calculate exposure?
Exposure is determined by aperture, shutter speed and ISO sensitivity. To calculate exposure manually, follow these steps:
- Determine the aperture value of the diaphragm. The smaller the f/stop number, the wider the diaphragm opens and the more light enters the camera. For example, f/2.8 lets in more light than f/8.0.
- Determine the shutter speed value. Shutter speed determines the amount of time the camera exposes the sensor to light. The longer the shutter is open, the more light enters the camera. For example, 1/125th of a second is faster than 1/30th of a second.
- Determine the ISO sensitivity value. ISO sensitivity controls how sensitive the sensor is to light. The higher the ISO number, the more sensitive the sensor is to light and the brighter the image will be. However, the higher the ISO number, the more grainy the image will be.
- Use the formula below to calculate exposure: Exposure = log2 (Aperture^2 / Shutter speed) + log2 (ISO sensitivity / 100)For example, if the aperture is f/2.8, the shutter speed is 1/125 of second and the ISO sensitivity is 400, the exposure calculation would be: Exposure = log2 (2.8^2 / 0.008) + log2 (400 / 100) = 11.7 EV
How to calculate resolution?
Image resolution is the number of pixels in the image. To calculate the resolution manually, follow these steps:
- Determine the size of the camera's sensor. Larger sensors produce higher quality and better resolution images.
- Determine the desired resolution in pixels. The more pixels in the image, the higher the quality and size of the image.
- Use the formula below to calculate the resolution: Resolution = (Desired resolution in pixels / Sensor area) x 100%For example, if the desired resolution is 1920×1080 pixels and the camera sensor size is 36x24mm, the resolution calculation would be: Sensor area = 36 x 24 = 864 mm² Resolution = (1920 x 1080 / 864) x 100% = 244.8%
