Description
Pressing your zoom in/out key fast will increase the zoom rate.
if less than 0.2s separate your last press then it will go to the next rate, those being 1 (regular) - 7 - 50.
Basicly press 3 times will zoom to the max.
You should be able to still adjust it not too slowly with the regular rate since 0.2s is quite a fast spam.
Press the other zoom direction (in/out) will reset the rate to 1.