I don't understand "tracking a subject while focusing manually and
adjusting aperture" when using a tripod. Ball heads are supposed to
hold a camera/lens STILL, not be supports to track motion. If you
want a support for tracking sports and other moving subjects, use a
pan head or a monopod.
I also can't imagine adjusting the aperture at the same time as
tracking a subject and focusing. Why would you ever do that?
For cine/video work, you should use a 3 axis pan head, instead of a
ball head, which is designed to allow horizontal or vertical movement
with improved stability.
Godfrey
On Jan 5, 2006, at 12:15 PM, Bob W wrote:
I have a grip action ball head. It was the first head I bought for
my first
Mannfrotto. However, I soon abandoned it in favour of a
conventional ball
head because to use the 222 properly you need 3 arms. I am short of
that to
the tune of 1 arm. Using the grip action thing you cannot
simultaneously
track a subject and either focus manually or use the aperture ring
while
keeping your finger on the shutter release. Possibly it works well
with AF
cameras and lenses without aperture rings.
