I have asked epson tech. support how to calibrate my EH TW 3200. They replied :
,,In reply to you email, when the projector is purchased it goes through a full calibration before leaving the factory which would then mean that this is not required later.
If you require a bespoke calibration you may need to contact an AV specialist or your AV supplier for 3rd party calibration of the unit.,,
Does it makes sense to buy some dvd or blu ray or even more expensive device to calibrate my projector or not ?