I've been dabbling in IR (infra-red) photography lately.
Here are some of my initial results, shot in Victoria Park during a lunchbreak last week.
This was supposed to be a quick test shot (hence low f-stop and high ISO) but turned out to be one of the better shots, largely due to superior composition -- something hard to get right without image preview.
Backlit plane trees.
Foliage appears white (infra-red actually -- I've converted to B/W in post-process) because it reflects IR.
More plane trees.