What is ISO?
Your camera is sensitive, so don’t make it cry. That is unless you change the ISO. This controls your camera’s sensitivity to light. The lower the ISO, the less sensitive it is to the light. While on the other hand, a high ISO will result in more sensitivity causing a brighter image.
An ISO of 100 is usually the lowest most cameras can go, some go lower and some don’t go as low (mine is 100). When you’re set at this setting, your camera will be the least sensitive to light, resulting in a darker image.
I pretty much always keep my ISO at 100 when shooting cars because it gives the least amount of noise, in other words, the pictures come out the sharpest.
The higher the ISO (usually around 3200) the brighter the image and also the more noise that you will be able to see. This is mainly used in low lit areas but I wouldn’t recommend it because there will be a lot of noise. Instead, pick up a tripod and just crank down the Shutter Speed on your camera and watch the magic happen in front of your eyes.
That’s all folks
That’s pretty much all you need to know about ISO for right now. The other 2 key elements of an Exposure Triangle are Shutter Speed, and Aperture. Once you learn how to use all 3 then you will become a master of the exposure triangle which = better pictures!