1. A method for changing an orientation of a picture taken by an image sensor of an electronic device without changing an orientation of said electronic device, comprising the steps of: providing a picture orientation command signal to a picture orientation switch of the electronic device by a user; providing a readout switch signal to a sensor readout module by the picture orientation switch in response to said picture orientation command signal; and switching said picture orientation in said sensor readout module from an initial picture orientation to a further picture orientation in response to said readout switch signal before said picture is taken by the image sensor of said electronic device, wherein said initial picture orientation is one of M possible picture orientations available for switching in said sensor readout module and said further picture orientation is one of said remaining M−1 possible picture orientations, M in an integer of at least a value of two.