Tom, thanks for the reply. Well, my project is about flow visualisation, something like PIV, used with laser. However, I was trying to explore alternative if UV or even IR will work for the project. As for the premium compact, it is for my travelling, I reckon, going to backpack to South-east Asia, wouldn't want something to break my back. Currently, I can get hold of a Coolpix A at about 500 usd, so was wondering if it would be worth the money.
For the project, I really have no slightest idea on the wavelength that will be used in the experiment, but able to capture video is a must (no Df... makes me sad).