I’ve been using an Arca Swiss Z1 ball head on my larger Gitzo tripod for about a year and love it. I added the Really Right Stuff PCL-1 Panning Clamp for panoramas along with a plate and various accessories. The system is great but kind of heavy so I started looking for a lightweight option for traveling.
I had recommended the Arca Swiss p0 (p-zero) head to a tutoring client based on reviews and specs. This is an ingenious inverted ball design that means you don’t have to have a separate rotator for panos. Because it’s the ball that mounts to the tripod, when you level the ball head the top plate is automatically parallel to the ground and allows perfect panos without an additional panning rotator. I also suggested that he put a Really Right Stuff clamp on the head.
It turns out there are two product numbers of the p0 head. The 801213 includes the new Arca Swiss Slidefix QS Quick Release which is not compatible with RRS. The 801211 is $70 cheaper and does not include the Quick Release clamp. My client had bought the one with the clamp so the first order of business was to remove the Arca Swiss clamp. This was not easy. The clamp is mounted with a 6mm screw, but the hex allen socket is pretty small and a metric size that I didn’t have. I took a trip to Crouch Sales, a specialty store here in the Dallas photo district that specializes in “bolts, nuts, anchors and more”. This is one of those great places that serves industrial clients, has deep inventory and the guys at the counter know what they’re doing. The salesman finally found a tool that fit but we couldn’t get the screw to break loose. It took clamping the allen wrench into some vice grips and twisting the wrench until it felt like it was going to snap before the screw loosened. Once the Arca Swiss QR plate was off it was easy to replace it with the RRS B2-40 quick release plate. If you do this modification yourself make sure to order the version with the 6mm metric screw. The model number is B2-40-LR-M6.
The system worked so well for my client that I decided to try one myself. First I called Precision Camera Works, the U.S. Arca Swiss repair center, to ask them about the difficulty of getting that M6 screw out of there. The technician I spoke to said that Arca really doesn’t want that QR plate coming off and soon would probably use an even stronger thread lock that would make it almost impossible to remove. He confirmed that the 801211 was the same head, just without the QR plate but with a small double threaded bolt that is 6mm on one end and 1/4-20 on the other. That’s the one I ordered from B&H. The next call was to the always helpful people at Really Right Stuff to confirm what I was about to do and make sure I was ordering the right parts.
When the head arrived I was happy to discover that a standard 7/16 socket wrench perfectly fits around the double headed bolt, grabs on the built in nut and makes it easy to remove. (SEE UPDATED INFORMATION BELOW FOR CORRECT SOCKET SIZE) The whole process took about 5 minutes. The head is much improved with the RRS clamp and now compatible with my other pano components. Upcoming posts will be about choosing tripod legs, adding the RRS pano plate and how easy this setup is to use.
UPDATE: A client had some trouble getting the screw out of the Arca Swiss plate and her experience might help others with the same problem: