Why do tripods have tall center columns if extending them reduces stability?
Asked 3/31/2014
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I often read that extending a tripod’s center column makes it less stable and should be avoided when possible. If that’s true, why do manufacturers include center columns at all, and why are some designed to raise so high? I’m trying to understand the practical reasons and trade-offs.
Originally by Photography Stack Exchange contributor. Source · Licensed CC BY-SA 4.0
Photography Stack Exchange contributor
12y ago
2 Answers
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There are a number of good reasons for a center column. The first, and most obvious is that even if you've chosen a tripod that's sized for comfortable eye-level use without the center column extended, every once in a while you'll want some additional height, and on those occasions, the extra height may be worth the penalty you'll pay in stability. In this case, the guidance you've read should indicate that you should avoid using the center column when you don't have to do so.
In addition to height, many tripod manufacturers design their center columns to serve other functions, too. It's very common, for instance, to include a hook of some sort at the bottom of the column - this can be used to hang weight (ex: your camera bag) that can help stabilize the tripod in windy conditions.
Some center columns can be inverted so your camera can be positioned very close to the ground (note the hook at the top): 
Finally, some center columns can switch to a horizontal orientation, which allows additional positioning flexibility -- especially helpful for macros and landscapes:
Originally by user269. Source · Licensed CC BY-SA 4.0
user269
12y ago
0
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Because the center column is a compromise: it adds convenience and occasional extra height, even though it reduces stability compared with using the legs alone.
A raised center column makes the tripod less rigid, but “less stable” does not mean “useless.” Even with the column extended, a tripod is often still far steadier than handholding. That extra height can be worth the trade-off when you need it only occasionally.
Center columns also have practical benefits:
- quick height adjustment without changing all three legs
- compact tripod design with good maximum height
- lower weight than making the whole tripod taller via thicker/longer legs
- added features such as a hook to hang weight for extra stability
- usefulness for other gear, like spotting scopes, where small height changes are handy
So the usual advice is not “never use the center column,” but “avoid extending it unless you need to.” Use the legs first for maximum stability, and raise the column only when the shot or working height requires it.
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