Did you test Panasonic 12-35 weathersealing ?

Used an Olympus E-1 and 14-54 for nearly two years subjected to dozens of trips to saltwater, splashed by waves while wading and fish slime. Never missed a beat. My Pentax K-5 and WR zoom only just lasted a year in same circumstances - both body and lens were leaking at 13 months.

If the ruggedized Panasonic laptops are anything to go by, they do know what they are doing when it comes to protecting electronics ...

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Shoot the Light fantastic