>This is called "ball creep" and its a common problem on ball heads. Only a
>few expensive ones are without this (Arca Swiss?). Even the biggest
>Manfrotto ball head display this phenomenon. The problem is biggest with
>heavy lenses and lenses offering high magnification. With eg. a 600mm its
>a royal pain in the ass - as soon as you frame your suject and tightening
>the head down it creeps.
I have the Arca Swiss B1 which has the same problem. However, it's not as
severe as cheaper ballheads, and only a problem with longer lenses. I have
tried two with the same characteristic.
regards,
Alan Chan
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