DarthSLR
First Officer
Flight distance : 1846716 ft
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Aperture: the size of the opening in a front camera element. It's measured in so-called "stops" (or "f/stops") It's somewhat reverse and non-linear (square root non-linear). The higher the values, the smaller the opening, the greater the depth of focus, the less light comes to the sensor. Cameras often have the "sweet spot" (typically around f/4..f/5.6) when the image is the sharpest.
Shutter speed - pretty much self-explanatory. Measured in seconds or in fractions of a second. The shorter it is, the less motion blur you can get, so use it accordingly, depending on your needs.
ISO: sensitivity. Usually starts at 100, and goes by a factor of 2 or 1.4 (square root of 2). The higher the value, the more sensitive the camera, but also the noisier the image. You normally want to keep is as low as possible.
All three work together, so if you want to keep the same "exposure" level and say, you adjust aperture from f/4 to f/5.6, you would have to either bump ISO from 100 to 200, or increase (drag) shutter speed from, say, 1/400 to 1/200.
As @Motfrooij said, it's basic photography, you can find tons of info and tutorials on the 'Net.
This is one I like: https://www.lightandmatter.org/2 ... ics-of-photography/
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