I do have a couple of ball heads but the ball heads introduce another
problem. The ball head gives you a simple method of having a level
mounting surface but cannot itself be used as a rotation point for the
pano. That would require adding a rotating mounting surface on top of
the ball head such as this
<http://www.ebay.com/itm/New-Fluid-Panoramic-Panorama-Panning-Base-Head-Tripod-Clamp-Compatible-Arca-/221381012671?pt=LH_DefaultDomain_0&hash=item338b562cbf>
which has already been mentioned here a couple of times.
I don't remember who but I think someone spoke of using two of these to
get shifts in 2 directions but I didn't understand how they were to be
put together. Perhaps the second head has to be attached to some form
of Arca Swiss sliding plate riding in the grooves of the first head.
Chuck Norcutt
On 7/5/2014 6:29 PM, JOHN DUGGAN wrote:
Chuck, As I recently posted I bought the circular clamp with Arca
Swiss clamp. As I stated I can fit it to the top of my Manfrotto ball
head. However I had totally forgotten about getting the pivot point
central with the nodal point of the camera lens. By offsetting the
supplied Arca Swiss plate I can just about manage it but really I
need a longer plate with an Arca Swiss groove cut into it
...BUGGER!!!
Regards John Duggan, Wales, UK
________________________________ From: Chuck Norcutt
<chucknorcutt@xxxxxxxxxxxxxxxx> To: Olympus mail list
<olympus@xxxxxxxxxxxxxxxxx> Sent: Saturday, July 5, 2014 8:25 PM
Subject: [OM] Time to revise the pano hardware plan
The other day I said I could use one axis of my macro cross-slide to
resolve the tripod socket off-center problem on my E-M5. The other
axis can take care of adjusting the no-parallax-point.
All well and good until I put the rig onto my tripod on top of the
Manfrotto 410 geared head. I had intended to use the level on the
geared head to level the tripod itself and then use the head to
control the stepped rotation for panos. No go. I had failed to
notice that the camera mounting plate on the geared head is nowhere
near centered with respect to the vertical axis of the tripod.
Back to ground zero. I pulled out the original Manfrotto 3030 3-axis
(non-geared) head that I bought with the tripod about 20 years ago.
It *appears* that the mounting plate there may actually be in line
with the vertical axis of the tripod. The problem is that I don't
know how to verify that it really is aligned. This is what it looks
like.
<http://www.ebay.com/itm/BOGEN-MANFROTTO-3030-141RC-3-WAY-PAN-TILT-HEAD-VERY-GOOD-COND-/271529767080?pt=LH_DefaultDomain_0&hash=item3f386f70a8>
Anyone have an idea how to tell if the center of the QR plate on top
is really directly above the center of the tripod post? I guess I
could suspend a plumb bob above the screw on the QR plate and see if
the plumb bob stays centered on the screw as the whole assembly is
rotated.
Chuck Norcutt
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