Quote Originally Posted by Nick Zentena
Think about a teeter totter. With a 35mm camera with a longish lens you've got all the weight on one end. The leverage pulls all in one way. With say a 4x5 camera odds are the whole thing is centred over the tripod head. All nicely balanced.
Good point, especially for long lenses. In theory the spread of the legs should take care of much of the effect of imbalance, but, you're absolutely correct. I think the head is of equal importance. The camera-tripod connection must be as stable as can be.

Thanks for the reply,
Bob