press it, spin it…
Most of the buttons on the D5500 are within easy reach of your right thumb, making it quick and easy to change settings.
A small indent here helps you to easily release the screen and move it into an articulating position, or fold it away from the body.
This dial controls different things depending on the exposure mode. For example, it sets aperture in aperture-priority mode.
Use these directional keys to set the autofocus point to whichever one you need while you’re using the viewfinder.
This ‘i’ button corresponds with the virtual one that appears on the touchscreen for quickly accessing key settings.