The Sony Xperia Z5 has the possibility to use a so-called "Super Vivid mode". With this mode, you can view photos in an improved color brightness and color saturation. The Super Vivid-Mode parameter has to be activated, because it does not work from factory.
This works very simply as follows:
1. Open on the Sony Xperia Z5 from the home screen the menu and then the Settings.
2. Select "Display" and then the submenu item "image enhancement".
3. You can now activate the Super Vivid mode on the Sony Xperia Z5 by selecting the appropriate entry
When you now watch a video or photo on the Sony Xperia Z5, then you will be shown this in a fresher color, as it would normally be the case.