Producer Kumar Mangat and presenters Shemaroo Films released a book on the making of Omkara.

Here is an interesting excerpt from the book, to give you a taste of what to expect:

Omkara was shot over a period of 4 months across various locales, including Lonavala, Lucknow, Allahabad, Wai and Mumbai. The principal photography began on the 13th of January, 2005 at a riverside in Kamshet. It was completed 68 days later at a pre-fabricated set, constructed in the heart of Mumbai.

The bulk of the shooting happened in one huge set built in the interiors of North Maharashtra, near the sleepy town of Wai. Beginning 26th December, about 250 workers lugged from Mumbai and around 150 local workers, sweated it out for a period of a months, to create this village set. This particular tract of land was selected by the art director and Vishal because it had a lake on one side and mountains on the other. The critical consideration while erecting the set was to plan the interiors and exteriors such that ample daylight filtered from outside. The set was constructed facing the lake over which the sun rises so that the early morning light came in from the right direction.