Instagram v.1.0 Filters Come to Lightroom

Really Nice Images says that their digital imaging experts reverse engineered these filters using GretagMacbeth color matching techniques, and that they've been optimized for the sRGB color space. If you're so inclined you can pick all of the Instagram presets for $30. Presets are available for Instagram v.1.0 and v.2.0 separately - each set runs $20.