An optional RR-90 remote release can be used for long time-exposures. See the manual provided with the RR-90 for more information.
Third-Party Remote Releases
Electronic releases from third-party suppliers can be connected via the microphone/remote release connector.
A confirmation dialog will be displayed when a third-party release is connected; press [MENU/OK] and select [REMOTE] for [MIC/REMOTE RELEASE].
For more information, visit the website of the country or region of purchase (the new window will open).