Minneapolis Minnesota downtown skyline view from a little hole in the jump fence offda E. Franklin Avenue bridge that crosses over Interstate 35W I’m getting a few questions how this was done: I had my tripod setup for about 2 hours on the bridge. I took some pictures at dusk when it was still light out and then again later when it got dark and all the city lights turned on. This image is a composite of 2 pictures manipulated in Photoshop. The base picture was one of those shots taken at dusk using a 30 second long exposure to capture the car light streaks on the highway. To get that long shutter speed in dusky light, I used a Lee ‘Big Stopper’ 10 stop ND filter with ISO at 100 and an small Aperture of f/20 (shutter at 30 seconds). I took another 'night shot' without any filters later in the evening from that same spot to capture the buildings when the city lights were on. In Photoshop, I used the 30 second exposure 'dusk shot' as the base layer and then put the 'night shot' on top in a different Layer. I masked off everything except the buildings on the night shot Layer and changed the Layer Blend Mode to ‘Color Dodge’ – that mode will keep pixels if they are lighter than the layer below and will hide pixels if they are darker – the effect is like turning on all the lights of the city :) A muchas gracias out to Cousin Greg for watching my back in that rather spicy neighborhood and my apologies to that other photographer for hogging the fence hole for so long :O