I noticed this TV commercial from Marriott rewards:
https://youtu.be/XMEIq3Y8N2A?t=11s
At 11 s, the photographer is shown with his hand holding to a patio frame,
with the long zoom holding on top of his forearm.
I can think of an argument that this way of bracing provides him some
stability.
To me that looked rather weird: he cannot control the focus (and zoom if
it is a zoom lens) this way. If you were photographing wild animals, that
sounds very unreasonable (unless you have some limited
functionality/stability in your left hand, or some other physical
limitations).
What do you think?
Igor
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