The sensitivity or ISO setting dictates how much light the camera needs to take a shot.
High settings such as ISO 6400 are useful for low light conditions while low settings like ISO 100 need lots of light, but produce the best quality results.
Rather than worry about this in the early stages, set your camera’s sensitivity to automatic so the camera can decide for you.
Your camera’s automatic white balance setting is the best starting point as it should produce images with natural colours and neutral tones in most conditions.
Once you’re more familiar with your camera you can experiment with the settings that are designed for specific lighting conditions and try setting a manual value.
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