I can not shoot in LR 4.1 with my Canon 600D, can tell me how to do and if not when I can do.? Thank you very much.
According to this docuemnt, "Shooting in Lightroom" is not yet supported for the 600D http://helpx.adobe.com/lightroom/kb/tethered-camera-support-lightroom- 4.html
While Raw files are currently supported, tethering is not yet. The earliest it can come, if at all, is the next Lightroom "dot" release which happens 3-4 times a year. The last one was May 29th.
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