thanks for your comments - Neil, you are right about the zooms - I slowed down the zooms meanwhile - looks better! Judy, I've been diving quite some time and first rule is: watch, don't touch:) - so on my 1200 dives, though seen a lot of dangerous en poisonous animals I've never been in a dangourous or threatening situation, as I try to keep respect for the habitat. We take our slr's down in special housings. As a lot of my diving is done in quite rough conditions we have very sturdy housings! Next to that we use very heavy strobes. Underwaterphotography is a complete different technique - but the eye of the photographer stays the same. gr, Reine