The buttons on the front of a playstation controller (d-pad, cross/circle/triangle/square) were pressure sensitive on the ps2/ps2.
256 levels on the ps2, 1024 on the ps3. Few games used this outside of racing games, and they were removed from the ps4 controller. It's most commonly noticed when configuring a ps3 controller on a PC.
I don't know what "face buttons" are, but the Analog button only toggles how the Joysticks work, toggling between sending Analog or Digital signals.
The buttons on the front of a playstation controller (d-pad, cross/circle/triangle/square) were pressure sensitive on the ps2/ps2.
256 levels on the ps2, 1024 on the ps3. Few games used this outside of racing games, and they were removed from the ps4 controller. It's most commonly noticed when configuring a ps3 controller on a PC.