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|Load Capacity||77 lb (35 kg)|
|Ball Sphere Diameter||2.13" (55mm)|
|Quick Release||Yes, with Arca-style plate|
|Spirit Level||Yes, 2|
|Tension Control||Yes, integrated into tilt-control knob|
|Separate Panning Lock||Yes|
|Head to Tripod Mounting Thread||3/8"-16 Female|
|Camera Mount Plate||1/4"-20 Male|
|Height||4.92" (12.5 cm)|
|Maximum Diameter||Not specified by manufacturer|
|Weight||1.54 lb (0.7 kg)|
This is a good bang for the buck ball head for weights well under the specified 77.1lbs. I have a couple of specific uses that I need it to perform for:1. It must be able to happily hold a 400mm 2.8 with my d810 and grip. I doesn't. Both the plate and ball head drift don't work for me.
Love this ball head mount. Holds a lot of weight stable on my tripod.
Very impressed and happy with this ball head, especially for the money. Extremely smooth and very solid. I put my new Sony FE 100-400 w/ 2X extender on it and shot the moon. Effectively 1200mm on my A6300.
The fit and finish has the same appearance and luxurious feel of my Really Right Stuff accessories. The Surui arca-style clamp works perfectly with my RRS Nikon camera plate. I am delighted with the quality.The ball movement has the same feel of high quality.
This ball head was an upgrade from a very basic Flashpoint ball head. Night and day difference. I had read several reviews comparing different ball heads and this one always got excellent reviews and for the price I'm happy I went with the Sirui. First thing I noticed is the quality of the item.
It is built solidly, with precision and no slop. The Arca-Swiss plate confidently secures the rig. No complaints so far.
Exceeds my expectations. As good as the national reviews suggested!
The fit & finish are perfect! It seems to be pretty strong unit; it holds my D750 & 70-200 f2.8 solidly.
Like the ballhead because it stays steady and easy to set.
The K-40X is a great ball head; I use it primarily with my Sigma 150-500 mm lens on my 7D Mark II with battery grip pack. My other heads have handles that tend to get in the way or caught on something too many times which I do not experience with the knobs on the K-40X head.