QR system

What a rush! I was just narrowly saved by fellow bidders from
paying USD63 combined for Velbon QRA-667 & QRA-635, plus $10-11 in
shipping.

Now that i have found Velbon QB-635 (plate) not to be enough[0] to hold
a 24 oz lens in place vertically, i am looking for alternatives,
Arca Swiss style QR being the main one.

[0] http://groups.google.com/groups?selm=slrnbj8uui.ggf.parv_fm%40localhost.holy.cow
http://groups.google.com/groups?selm=slrnbjbc0l.p5o.parv_fm%40localhost.holy.cow
http://groups.google.com/groups?selm=slrnbjd6mm.11re.parv_fm%40localho...holy.co


Ok, before i dive in it, could somebody do an experiment for me who
has ~24 oz (i suppose +/- 2-3 oz would be ok) lens (Minolta 70-210mm
f/4 is an example) and Arca Swiss style QR combination?

Experiment itself is simple...

- Mount the camera on the head (on a tripod) w/ ~24 oz lens
horizontally.

- Rotate the head 90 degrees (to change the film orientation to
vertical format)

- Note if the camera moves/unscrews on the mounting plate (due to
lens exerting force downward)

- Post the results

Any volunteers?


- parv

--
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A programmer, budding Unix system administrator, and amateur photographer
seeks employment: http://www103.pair.com/parv/work/

parv wrote:
 >
 > What a rush! I was just narrowly saved by fellow bidders from
 > paying USD63 combined for Velbon QRA-667 & QRA-635, plus $10-11 in
 > shipping.
 >
 > Now that i have found Velbon QB-635 (plate) not to be enough[0] to hold
 > a 24 oz lens in place vertically, i am looking for alternatives,
 > Arca Swiss style QR being the main one.

Parv,

The thing about the A/S type QR system is that it's great if there are
custom plates available for your body, but somewhat less wonderful if
that's not the case. As I recall, Minolta is poorly supported.

So, if there IS a custom plate for your body, there is little doubt that
it would hold your setup to your satisfaction. If not, you may find the
same problem as with the Velbon system.

Lisa<!-- ~MESSAGE_AFTER~ -->