Travel Restrictions for Lithium and Lithium Ion Batteries http://safetravel.dot.gov/documents/airline_passengers_and_batteries. pdf ... In carry-on baggage, there is no limit to the number of consumer-size batteries or battery- powered devices that a passenger can carry for "personal use". ... http://safetravel.dot.gov/documents/airline_passengers_and_batteries. pdf
Learn how to use the Digital Lens Optimizer feature in Digital Photo Professional version 4.x which allows you to use lens data to correct diffraction errors in your images.
With set and the power switch set to <R>, you can prevent the current settings from changing due to accidental movement of the Main Dial, Quick Control Dial, or Multi-controller. If the power switch is set to <LOCK> and you try to use one of the locked camera controls, <L