raspberrypi/userland — pull request #73 by JamesH65 (2013-08-08 16:28:12+00:00)
Title: Added -roi command to allow specification of the area of the sensor to use as input

Added -roi command to allow specification of the area of the sensor to use as input to the ISP. This facilitates zooming (including offcentre)

Also updated the docs to reflect the new command and updated to latest published version.