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Automatic lens calibration #65
But it does not include the Canon a490, unless it shares a lens with another camera... there is a tutorial on calculating your own camera models and entering them into the XML file database: http://lensfun.berlios.de/lens-calibration/lens-calibration.html but it is a bit involved (uses a series of photographs and GCPs)
Perhaps if we run a batch script and assess what camera models are most common...
I exported all the cameras currently represented in Knitter:
Canon PowerShot SD400