I apologize in advance for the length of this... Basically there is a building I want a shot of, it would be a nightime shot and bracketed, the building is brightly lit but the surroundings not so much, I want to bracket to burn in street lights, stoplights etc... The thing is that I will be setting my tripod up on the road and it's very steep, angled downward towards the building. It's blacktop with a double yellow centerline and I'd like to get the centerline and street illuminated. There is virtually no traffic at night, so I don't think cars will illuminate it, and though there are streetlights in the distance I don't believe there are any near my position. My GUESS is that due to the steepness, the road will fill the bottom 1/4 of the frame at the most. I'd like to use my flash below camera in front of the tripod to hit the street with light. So: 1 - if this is a bracketed image, and I only use the flash during the last frame, will this screw up the merging process in Photomatix? I'm guessing it will try to balance the exposure on the street between the totally dark and the one frame that's lit, but I'm not sure. If it's an issue, I can flash each frame as the light will spill off the street and not affect the rest of the image. I just need to figure out how:mrgreen: 2 - Not exactly sure how to trigger the flash, I'm not aware of a way to do conventional bracketing and trigger it with each frame. There is a flash bracketing function but I think that just varies the flash power to adjust the exposure rather than the shutter speed... I do have a PC cord, well a cybersync transmitter and reciever which are the same thing... Commander mode won't work here I don't think, as the flash sensor won't be anywhere near the spot it needs to be to see the flash. If I can get away with flashing one frame, I can just use the test button on the flash, but I'm not sure if that fires the SB900 at full power or not(not sure how much power I'll need). Nikon experts, what say you I guess another option would be to manually bracket and layer the images in PSE7. Thing is, I don't know how to do this, and I bet I'd be lost once I got them laid on top of each other.