QUOTE (dante @ Aug 13 2009, 12:19 AM)

I am going to Kauai in a couple weeks and plan to take one of those helicopter sightseeing tours. Does anyone have any tips on what lenses work best for this or any other useful hints? Thanks!
I did a Volcano tour on top of Big Island a few months back in an heli with doors removed, was a blast and great for photography, but:

- wind is strong and I found it hard to maintain framing with my 300 f2.8,
- camera straps are strongly advised,
Regarding the shooting, even f2.8 on the 300mm was enough to have sufficient DoF, so favor shutter speed over aperture, I would advise not to go below 1/500 sec if not 1/1000 to be safe.
Focal lenght wise, this is a tough call, but a zoom might be a good idea since it will be difficult to change lens. Wides from the air at typical flying hours are overall not super interesting I find, so I am personnally biased towards longer lenses, but this is just a matter of personnal taste. A 100-300 with VR/IS might be a good compromise.
In lens VR/IS is also a strong plus in that the reduced vibrations help a lot with the framing. You will also not have much time to check histogram and all, so depending on how you camera's meter typically behaves, it might be wise to dial a -0.7 stop under-exposure to avoid having too many blown highlights.
Don't forget to enjoy the landscape though.

Cheers,
Bernard