I have a night time wedding over Christmas and I'm thinking of hiring an 85mm.
I used to own the 85mm 1.8 and I've played with the 1.2 a few times.
I LOVE the 1.2 - I love the look you get from that shallow DOF but it is a tad slow to focus and you're going to end with less shots in focus with that lens if you're shooting at 1.2 (and let's face it - if you have that lens you'll want to shoot at 1.2).
I know the 1.8 well - it's an awesome lens and will focus quickly and give me good results.
But - I know I'll be missing out on that 1.2 magic.
I have a 100mm and a 35mm zeiss manual focus lens also.
Plus - the 1.2 will give that extra boost when shooting in low light..
I'll have 2 cameras and don't really intend to change lenses at all - so 1 camera with the 35mm and one with an 85mm... just depends which one.
What would you guys rather shoot with at a night time wedding?