architect's renderings then this is going to be one helluva structure when it's finished.
Three cameras today: Olympus E-3 w/50-200mm, E-P2 w/20mm and E-PL1 w/14mm. Everything post-processed in LR4, with some further post processing in Silver Efex Pro 2.
Most of the time I either leave the photo as 4:3rds, or trim it 1:1. The very top photo I decided to crop 16:9. I like how it looks that way, with the extra junk (trees and what-have-you) trimmed neatly away, while taking advantage of the full width resolution of the sensor. I need to experiment more with 16:9. I like it.