Fascinating pair of photos.

Thanks, normally I don't do much in the line of man-made structures, as you can see from my submissions, but this one just made me stop and go "hmmm..." The way it was skylined just caught my attention. I don't think it would have been half as neat if there had been blue sky behind it.

The contrast between your pair of photos is dramatic. What type of camera did you use? The photographic solidity of that fog bank is unusual because most digital cameras can see into the infra red where fog is usually more transparent.

That was taken with a Canon EOS-350D, using a Canon-made 75-300mm USM lens, at a midrange focal length. I would suspect that a good deal of the apparent solidity of the bank is due both to the filtering in the camera, and there being nothing behind the tower but a valley that runs perhaps two miles, to dead-end against a brush-covered hill. Fairly uniform, nondescript infrared source.

Thanks! I think you've figured it out.