85mm 1.8 - A few questions

[JerryPH]

Isn't 1.8 a third stop? I believe 1.7 is the half stop. So he'd be shooting at 1/160th

Possibly, I wrote that whole post in under 60 seconds... I often type fast without checking. Let me check and get back to you... but in all honesty.. 160th or 180... it will make NO huge differences in the real world.