When you set up your camera, at some point you will have to reach a decision on which color space to use. Take a look at your camera’s menu and you will see an item labeled Color Space. The two options will be sRGB and Adobe RGB.
Like a lot of people, I started out using sRGB because that is what the camera defaults to using. After a while, however, I learned that Adobe RGB was a larger color space, so I started using that. Doing so led to some occasional problems when I posted... more