Shutter Speed
simply refers to the amount of time that the camera's shutter is open. The longer the shutter is open, the more light that passes through to the camera's sensor. Conversely, the shorter the shutter is open, the less light that's able to pass through.
- measured in seconds
- to freeze movement in an image you'll need faster speed/ to let the movement blur you'll need a slower Shutter Speed.
ISO
How sensitive a film is to light
A camera setting that will brighten or darken a photo. As you increase your ISO number, your photos will grow progressively brighter. For that reason, ISO can help you capture images in darker environments, or be more flexible about your aperture and shutter speed settings.
However, raising your ISO has consequences. A photo taken at too high of an ISO will show a lot of grain, also known as noise, and might not be usable. So, brightening a photo via ISO is always a trade-off. You should only raise your ISO when you are unable to brighten the photo via shutter speed or aperture instead (for example, if using a longer shutter speed would cause your subject to be blurry).
A camera setting that will brighten or darken a photo. As you increase your ISO number, your photos will grow progressively brighter. For that reason, ISO can help you capture images in darker environments, or be more flexible about your aperture and shutter speed settings.
However, raising your ISO has consequences. A photo taken at too high of an ISO will show a lot of grain, also known as noise, and might not be usable. So, brightening a photo via ISO is always a trade-off. You should only raise your ISO when you are unable to brighten the photo via shutter speed or aperture instead (for example, if using a longer shutter speed would cause your subject to be blurry).
- the lower the number, the lower the sensitivity and the finer the grain in the shots/ higher numbers mean your sensor becomes more sensitive to light (use in dark)
Aperture
Can be defined as the opening in a lens through which light passes to enter the camera. It is expressed in f-numbers like f/1.4, f/2, f/2.8 and so on to express the size of the lens opening, which can be controlled through the lens or the camera
Can be defined as the opening in a lens through which light passes to enter the camera. It is expressed in f-numbers like f/1.4, f/2, f/2.8 and so on to express the size of the lens opening, which can be controlled through the lens or the camera
- the opening in the lens
- the larger the hole the more light gets in- the smaller the hole the less light
- measured in 'f-stops'
Frame rate
- the number of individual frames that comprise/make each second of video (how many frames per second)/ the simple act of measuring how many video frames the surveillance camera captures per second of video. 30 fps means the camera captured 30 frames in a single second of video; the higher the frames, the smoother the video will be. Frame rate also has an impact on the size of your video files. A higher frame rate of 60 fps results in more frames, so the video file will be larger and heavier for the device.
https://www.videosurveillance.com/tech/frame-rate.asp
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