What is the one piece of equipment, besides your camera, that you always take with you to photograph cars, trains, or planes? In other words, what single item do you feel is essential to getting good car, train, or plane photo's?
As a new shooter, I often wonder how other photographers plan and pull off a shoot of an automobile, train or an airplane. And if there is one piece of equipment they feel is essential to make the shot. I personally am growing quite fond of my Phottix speed light and new Sigma 10-20 lens. But I think it's because they are still new, and I'm still learning to use them. What is everyone else's thoughts on must have equipment for this type of photography? Please give an example, and/or a photo of why that piece of equipment is so important to you.






