The good, the bad and the ugly of aerial photography - part 3: equipment

In previousarticles I've discussed the advantages of aerial photography and shooting from a helicopter as opposed to shooting from a light plane. But are there any special considerations with regard to equipment when shooting from the air? Since we've already established that it's the superior choice (at least in my opinion), let's concentrate onthe helicopter first. An open door gives the photographer a vast range of angle options, and selecting the equipment can be difficult at first. You can ...