Quote:
Originally Posted by Buddha Why is is better to change the position of your hand when the camera/lens is on a tripod? Reaching over the top feels unnatural and interferes with my vision when I look up. Hand underneath as always is a better ergonomic fit and I can still see naturally. |
This is only necessary for large telephoto lenses and the purpose is to stabilize the lens using the weight of your hand pressing down. A slight movement of a long telephoto lens can impact focus blur much more than a shorter lens. Try using a 600 on a tripod in the wind and you will see the need to use your hand to help stabilize it.
John was primarily talking about using a zoom ring which would be more appropriately operated from below or to the side of the lens. Long telephoto lenses are normally primes with no zoom ring.
The method John describes is also beneficial in holding the camera and lens stable when shooting without a tripod. Resting the lens in your hand you can still turn the zoom ring while shooting.