Lightweight Travel Tripod Camera Tripod 63.8''/162cm 10kg/22lbs Load Capacity 360° Panorama Ball Head for Canon Sony Nikon SLR DSLR B234A1+BH-28 (TM2324)

SKU: KF09.007

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The Allen wrench is used to tighten the legs and other parts of the tripod that may come lose during use especially out in the field or if a single leg breaks it allows you to remove it and replace the leg as opposed to buying a whole new tripod. 
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ANY tablet, but you need to buy a mounting adapter that holds the tablet and attaches to the tripod. 
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For telephoto lens, we do suggest you could use one telephoto lens bracket that could be attached to the tripod to increase its stability. 
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The item that I purchased from K & F was a monopod. It is a pull tab type. I use it for birding. I find the pull tab much easier and faster to use than the round type that you have to unscrew. My monopod is lightweight and durable and I've been using it two years. 
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Yes, just make sure if you use a large lens use the lens' tripod mount. If not it may topple. But the tripod is sturdy. 
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It should, it has the standard thread bolt on the mount 
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It works with any camera that has a quarter inch thread on the bottom (normal tripod adapter) 
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For how to install the foot locking system, please refer to this video https://youtu.be/jZb6Fn6T_u0. 
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To hold telephoto lens, it is recommended to use a tripod mount ring additionally for better balance. Meanwhile, it is better to hang some heavy thing to the hook to lower the center of gravity on this tripod to make it more sturdy and less prone to vibrations.