This is across the bay from my area, couple of miles I think. I'm hoping it's mostly steam, as there was some chill in the air today.
Shot using the 400, with 2x Quantaray extender, and with the 1.6 FOV crop, makes this about 1280mm. Yep, I used my tripod.
Autolevels, and resized.
Oh and here's the pre-levels shot... kinda hazy, and I don't have any filters for the new lens just yet.
Oh yeah. Shot in RAW... Adobe RGB.