[Brightcolours]

F1.8? F1.4? Lets put things in perspective. f1.4 for "50mm"(55, 58) was normal fast, f1.2 really fast. For 85mm, f1.8 was the norm for a while, until f1.4 (and f1.2 for Canon) was the fast edition. For 35mm, f2 was "fast" for a very long time, until the Nikkor 35mm f1.4 appeared. For 135mm, f2 was the fast norm until, the latest generation, where f1.8 appeared.
So it does depend on focal length whether f1.8 is to be considered fast, or just a meh safe choice.