I have just read with great interest Michael's report on the Olympus OM-D E-M5. Can someone tell me if that camera has a maximum time limitation when using Bulb? I currently have a Panasonic GH2 and was disappointed to discover that it has a maximum of 2 minutes in Bulb - not much use for capturing star trails! If the OM-D E-M5 does have a limit, then perhaps its multiple exposure capability would be a way to work around the limitation.