There are so many different positions of the 5th finger, when playing, dependent on figuration, tempo, volume, accentuation, articulation, that it's quite impossible to say, how the position looks like in general.
The point, where the finger transmits the power to the key may be the fingertip, but it also may be the full length of the finger or even the outside of the finger, when the thumb shows upwards.
It looks somewhat strange to me, when the last part of the finger bends outwards. (That's not possible with my fingers.) I wouldn't take this as a standard position of the 5th finger.