(
Executive summary: well-made replacement for Pentax tripod foot for $35, or in a package with an arca-compatible universal lens plate for $65. Ordering details to come!)
The News:
My good friends at
Fanotec Professional Photographic Accessories (the creators and manufacturers of the entire
Nodal Ninja panoramic photography product line) have reverse-engineered the removable "foot" for the DA*300/4, and the DA*60-250/4, which also fits the Pentax Adapter Q to K. They spent considerable effort to engineer a replacement tripod mounting solution that fits precisely into the wedge-style clamp found on these three current Pentax products, and any future ones using the same removable foot design. Consistent with their other unique products, they are not content to simply "copy" a design, but rather sought to improve it.
So, what I can show below is a "production-finish prototype" made from high-strength aluminum, with a brass and steel clamp mechanism and steel attachment screws. The parts for this prototype look CNC milled and hand-assembled, and only the knob is not representative of the final product (it will be smaller). Given the small market for Pentax parts, their proposed production run of 50-100 units might also be individually milled. The finish is excellent (smooth, satin-anodized black, with all edges rounded off), and if it is like their Nodal Ninja products that I've abused for nearly a decade, it will be very, very durable.
The Deal:
You can see in the photo that the design has two "parts." One is the upright clamp that grabs onto the wedge areas of the lens collar or adapter, and the other is the arca-compatible "universal" lens plate. These parts will be available together in a "package," but for those that don't use arca-style mounting equipment (Manfrotto RC2, etc.), the upright clamp unit can be purchased alone, making it a (lower-cost) alternative to the hard-to-find Pentax OEM foot.
Before I go further (and in case you missed the summary), I know you want to know "how much does it all cost?" For a limited production run of 50-100 units, Fanotec will charge
$35 for the upright clamp alone (which is basically the Pentax OEM part with a smaller footprint), and
$65 for the package including the clamp and 100mm "universal" lens plate package. I think the universal lens plate will be offered alone in the future, but I don't know the price.
The Details:
The upright clamp is sized for the DA*60-250/4 lens (slightly taller than the DA*300 foot), and attached to the universal lens plate (100mm or ~4" long) by 4 steel screws, meaning it can be reversed if you don't like where the (prototype) knob is. Also, the upright clamp tower has a 1/4" thread on the bottom as well, so it can be taken off the arca-plate and attached to different types of quick-release plates (Manfrotto RC series or other proprietary types) or possibly even an L-bracket!
One interesting departure from the Pentax design is where the knob is in relation to the moving "wedge" part. In the Pentax design, you turn the knob and it "pushes" the wedge inward toward the mount, but in this design, turning the knob "pulls" the wedge from the opposite side, giving a stronger clamp action! Another difference is that the knob in this design is only active when it is pulled out (like a watch knob). It spins freely when pushed in, meaning you cannot accidentally loosen your tripod mount!
Finally, the supplied "universal" lens plate includes two different thicknesses of a removable "ridge" for using the lens plate with any other lens or accessory, as well as the shorter steel screws to attach the ridges, and a "captive" 1/4" screw that slides in the channel down the middle to attach the plate to a different tripod mount. There are also screw holes for "safety stops" if your arca-mount is compatible with them.
Here are additional photos of the parts and some different views:
Last edited by panoguy; 03-18-2013 at 08:11 PM.