Hi guys, Here's my situation: in architecture photography, to properly light a darkish building (say, an 11th century chapel), I intend to set up the camera on a tripod and walk around with an SB-910 attached to a monopod and angle it so that the flash illuminates the parts of the building I intend to light. I have a transmitter in hand, and every time I press a button, the flash goes off as the camera takes a picture. The various photos are thereafter composited in Photoshop, a bit like some people do for real estate/interior design photo. My question is: what would be the best trigger/radio equipment to achieve this, bearing in mind I will not always have line of sight and the radio path may be obstructed by, say, large stone pillars. Thanks very much in advance for your tips.