Lapse of the Shutter
Merging
Two different weather fronts meeting high up in the sky. I think they actually only appear to be meeting because of the perspective that this was taken from, looking up from the ground. Actually, they are probably several thousand feet apart. If you look very closely, towards the bottom of the photo you can just make out some birds flying past, way off in the distance. I didn't notice these when I took the shot, and thought they were dust on the sensor until I viewed it at 100%! It adds a nice sense of scale though, to make the clouds seem even larger.
*Taken from the Lapse of the Shutter blog
Merging
Two different weather fronts meeting high up in the sky. I think they actually only appear to be meeting because of the perspective that this was taken from, looking up from the ground. Actually, they are probably several thousand feet apart. If you look very closely, towards the bottom of the photo you can just make out some birds flying past, way off in the distance. I didn't notice these when I took the shot, and thought they were dust on the sensor until I viewed it at 100%! It adds a nice sense of scale though, to make the clouds seem even larger.
*Taken from the Lapse of the Shutter blog