For my big tour next year, I'll have a D-SLR, probably the Olympus E-510. To keep it free from moisture and dirt, I was thinking about buying the Ortlieb Aqua-Zoom.
Has anybody any experiences with this? How easy (or annoying) is it to open and close when you want to take a shot? What about carrying options? I have a small Arkel handlebar bag; will it be too large for that?
Cheers for any replies.