By Arts & Mobile. Free for basic features, 99 cents for higher resolution and album upload. For iOS only.
Tilt shift is a camera effect that blurs the edges of a picture, creating an optical illusion that makes everything in the photo look miniature. You can control where and how much blurring to produce. You can also determine how much darkening around the corners you want to produce a vignette effect. You can also adjust the saturation, brightness, and contrast.