all photographers edit but those pictures are not photoshopped
gunderson did it with pep also, he got the flash of pep doing a tipstand in the foreground and the long exposure in the background
what the flash does is shoots out a burst of light for a fraction of a second, that lights up everything in the foreground for a split second
if it's dark outside, it lights up everything you can see and then goes back to darkness
once the flash is off, you can leave the shutter open with wide aperture to take in all the light from the night sky and town above but since the photo was taken partially in the trees, it's not gonna light up the foreground. if the camera is on a steady as fuck tripod and you make sure the battery doesn't die and the lens doesn't fog, you have a damn good picture
some pictures should not be possible but people can do amazing things with cameras
