SUNWAYFOTODiscal Disc Clamp Arca Compatible DDY-64i Sunway

This clamp is a lot cheaper than the RRS equivalent. I have it on top of my Arca Swiss P0 ballhead. Quality seems top notch but I've only been using it for 2 months so don't know how long it will last. Only downside that I can see is that the bubble level on top does not seem very accurate. I can't get a level pan on my ball head just relying on the built in bubble level.

Awesome piece of kit, exactly what I needed..

Purchased this based on another person's previous reviews; mounting this on an Arca-Swiss P0 monoball (excellent by the way!!!).I like the fact that the diameter of the base is close though a little larger to the size as the Arca; it's a tiny bit larger but nothing that is really noticeable or detrimental to it's use. I was concerned about the clamping face being smaller than the other Arca-Swiss mounts I have, but it holds tight and it's not like it's going to be snapped off; an extra cm in length isn't really going to make that much of a difference in it's holding ability or strength, at least for my applications (1dMK IV with 70-200 zoom for weight reference). Wouldn't hesitate a Hassy, 4x5 field camera etc... My only complaint is that the underside of the plate is CNC'd out I guess to save some weight, which gives it less surface area to make contact with the rubbery mounting surface of the Arca. As a result, the clamp can rotate under the weight of the camera and manhandling at times (ladyhandling too I would suppose) and can be a little frustrating . Maybe I need to really tighten up the locking screw or apply a little lock tight to help, or maybe roughen up the underside of the clamp with sandpaper to give it a bit more bite in it's contact. Overall, not a bad piece of gear, though it's not an Arca-Swiss or RRS, but then it's much more reasonable $$$ too. Happy to add it to the working gear! Oh yeah, someone mentioned to forget about using the bubble on this thing, but mine seems to be ok; a little small but it works.UPDATE 2/20/15: While I've worked with the clamp with satisfaction, I came upon it's one shortcoming, and that is when trying to shoot straight down, the QR locking knob conflicts with the pano locking lever on the Arca Swiss PO monobal. There's no way to change the orientation of the pano locking lever which is directly in line with the one slot for the ball head to tilt down 90 degrees. Unfortunate but not the necessarily Sunwayfoto's cause of the problem; the two just don't work together in that configuration. I'm stuck now with either switching to Arca's solution, which makes all my plates and L-brackets useless (smaller plate size for the Swiss), or switch gears all completely... or possibly go for Sunwayfoto's model with the longer locking knob, but then defeats the whole tight and compactness of the whole package. Sad......UPDATE 2017-OCT: Find that the locking nut becomes difficult to loosen and remove the camera, like.... I need to carry a pair of pliers along with me kind of tight! While it holds the camera tight and firm, when I try and remove it I can't get enough purchase on the smallish knob to loosen it. It's not like I'm tightening it with vice-grip like fingers so not sure why this is happening but looking for an alternative, and willing to pay more for a better quality product ala ReallyRightStuff.

Bought one a couple years ago to sit on top of my Carbon Fiber Monopod. Now bought a second to go on to a newer monopod. The quality is top notch and I trust my Canon 300mm 2.8 glass to sit on top of this.The compass and bubble are not very useful - so just ignore them as features and pay for the quality of the piece itself.

Well made, durable, smooth, what else can I say.. works great on my pano rig.

I have never been disappointed with Sunwayfoto products. Solid build quality and excellence value. 64mm diameter is perfect fit for standard pano rotating heads. Discal Arca-Swiss clamp offers secure fit for nodal rail or camera body.

Solid piece. Grips the plate tight with no slippage. Knob turns smoothly. Very affordable!

Perfect for L Brackets on on a camera to go landscapes or portrait view. Easy to attach to tripod top or other item. Holds firmly!