(Click on thumbnail for enlargement) Steven Haddock says: "I love the "miniature" aerial photography. I got the same effect accidentally one time flying out of Sydney: the exhaust of the jet blurred the upper part of my photo, giving a surreal effect. (I've blurred the lower portion myself in the attached version below.) As for tutorials, you can get almost the same thing in photoshop just by selecting the foreground and background, feathering your selection, and applying a gaussian blur."
Reader comment: Robert Emslie says: "Here's the website of Gérard Pétremand, a Swiss photographer located in Geneva that also does great tilt-shift photography. Notably, his Silicon Valley series."