Like in ancient times digital photos require proper developing process. Cameras do it on-the-fly but if it is essential to get the best out of captured photos, it is better to do it manually to maintain full control of the process.
Samples of digital developing process
Below you can see the difference between unprocessed capture and developed one. We can control and correct many parameters of the photo i.e. exposure, shadows and highlights, saturation, white balance and many more.
Use arrow or dots below the picture to see difference.