I have been using a Benro PU50 camera plate with the 907x. It works well, can be fitted either in fore-aft orientation or side-to-side orientation, and its thin, inset rubber pads prevent rotation nicely once snugged properly. Key in fitting it is to center it onto the 907x body ... I found if I fitted it slid back a little ways that it was exerting a little pressure on the CFVII 50c back in one particular spot. Don't know if that was any problem, but it disturbed me.
Since then, I've been thinking of other handling improvements. Hasselblad showed their prototype grip in a photo at announcement time, which turns the 907x into an eye-level camera and gives you right-hand controls to operate it with. That looks like it will be great for that kind of use when it appears, but it isn't how I ordinarily want to hold the camera ... I like shooting with it at waist level using the LCD. What makes sense for my goals is to handle the camera using a 'dumb' grip on the left side, where there are little in way of controls, and leaving the right side free for access to the control dial, alternate button, shutter release, and focusing ring. Arranged correctly, this would also allow for using the full format (LCD in vertical orientation) by rotating the whole camera easily and again leaving the controls accessible.
Cobbling something like this together, I thought of the Three-Legged Thing short L-plate that someone had mentioned in one of these threads and looked it up. It looks like it's functional but I wasn't impressed with the style and bulk of it ... I'd want this grip to be on a camera a lot of the time so it's important that whatever I pick to build it on fits the body pretty tightly.
Poking around, I came up with the Kirk Enterprises (née Kirk Photo)
Universal Small L-Bracket. This is very trim and light, sits very close to the body, and has two channels for the securing bolt. With the bolt fitted into the front channel, it allows full access to the control dial and shutter release with the vertical foot snug and nearly flat against the left side of the camera. There's a loop for a hand/neck strap on the right (in addition to the standard strap lug), and the standard strap lug is accessible through the rails on the left. That presents an excellent L-bracket all by itself for using the camera with its full 3:4 format on a tripod, and it's relatively inexpensive as these things go.
Next, I discovered the
Really Right Stuff 22MM MICRO CLAMP, a really tiny A-S compatible clamp with two 1/4-20 tripod mounts on its base. Seems to me that I can fit a hand-whittled wooden grip to this with two bolts and make the combination of this plus the ULB-1 into a nicely adjustable, reasonably compact and light left-hand grip for the 907x package that will suit my desires. So I've got all the bits on the table, a nice block of wood, and my whittling knives.
Here are a couple of photos of the camera with ULB-1 fitted:
Click image for a video of the camera and L-bracket from a variety of angles and orientations.
You'll notice that the camera is tilted forward in the L-bracket. This is because the rubber pad that provides grip for the L-bracket is only compressed under its leading edge and the rear of it is not compressed, forcing the rear of the camera upwards. I'l cut and trim the rubber pad so that it only spans the narrow width of the 907x body to solve this issue ... then the camera will sit level in the bracket. (These bits only just arrived a day or so ago, so I'm still working out how to use them best.
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The last two photos in the video show the RRS 22mm micro-clamp fitted on the vertical portion of the L bracket. I'm looking for the appropriate bolts and selecting the bit of wood I'll whittle into a grip.
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