A tripod may not seem like the most high-tech photo accessory when compared to the fancy lenses, flash systems, and other electronic gizmos that you can add to your camera bag. But no matter how much you鈥�ve spent on gear, it鈥�s often a tripod that can make the difference between a successful shot and a blurry useless smear. If you鈥�re gadget-happy, don鈥�t worry鈥�the modern high-end tripod is still a marvel of high-tech materials and engineering technology.

Why use a tripod

What a tripod gives you, of course, is stability. And that stability buys you a few different things: you can use longer shutter speeds, which let you work in lower light; you can use smaller apertures with longer shutter speeds, which let you shoot with deeper depth of field in bright light; and tripods are essential if you need to repeatedly shoot the same scene, say for a time-lapse sequence or HDR. With modern digital sensors, you can work with less light than you could have shooting with film, but a tripod is still required to get sharp shots.

Tripods run the gamut from inexpensive units that work okay, but can be frustrating due to their lack of stability and versatility, to high-end, very expensive units made from lightweight carbon fiber and metal alloys. Here are some factors to consider when shopping for your perfect tripod:

Pan/tilt versus ball head

Pant/tilt head At the top of the tripod is a head, which contains a mount for your camera and controls for moving the camera around. In general, these heads fall into two categories: Pan/tilt and ball head. Pan/tilt heads are what you typically use when shooting video, because they provide the ability to lock each axis (tilt, pan, and roll) independently. This allows you to unlock the pan axis and make smooth pans without worrying about accidentally moving the camera on one of the other axes.

For still shooting, independent axis control is usually not needed, which is why a ball head often makes more sense. A ball head is simply a ball and socket joint. Loosen the head and you can move the camera in any direction. Moving it smoothly on one axis won鈥�t be easy, but at least you鈥�ll only have one control to deal with.

Ball heads are usually lighter and smaller than a pan/tilt head, and they offer simpler controls. Because they are a simple mechanism, ball heads are frequently more stable than a pan/tilt head. If you鈥�ve ever experienced carefully positioning a camera, only to lock down the head and feel the camera drift a bit, then you鈥�ll probably want a ball head. They鈥�re far less likely to exhibit these kind of stability issues than pan/tilt head, especially at the low end. Ball heads have a durability advantage, as well鈥�because they can be made using extremely simple designs, they鈥�re resistant to dust, dirt, and wear, and they have fewer small components to break.

Most quality heads provide a removable plate that you can leave attached to your camera. These plates provide a quick-release mechanism that makes it easy to quickly get your camera on and off of your tripod. No matter what type of head you choose, you鈥�ll want to consider its weight and portability when shopping.

Size, weight, and height

Are you going to be carrying your tripod around, or will it be used in a studio or at home? If it's destined for travel, will you mostly transport it by car, or will you have to lug it around on your back? Balancing features with size and weight will be one of your main concerns when choosing a tripod. Fancier materials such as carbon fiber or magnesium alloys can greatly reduce weight, but you鈥�ll have to pay more for them.

The height of the tripod is also a tricky variable. Ideally, you don鈥�t want to stoop to use your tripod, so if you can get one that raises all the way to your eye level, you鈥�ll be more comfortable when shooting. However, a taller tripod won鈥�t collapse to as small a size. If easy portage is a concern, then you may need to balance overall height with collapsed size. Compact tripods can have more leg segments, which take a little longer to set up.

Tabletop and mini tripods are small, light, and portable, but don't have extendable legs (though some have optional extender pieces). These tripods are good for macro photography and for taking on trips when you have limited space. They are also ideal for point-and-shoot cameras, though a few are rated for heavier DSLRS.

Maximum load capacity

Carrying capacity is another element that you balance in to your buying decision. Every tripod and head has a certain weight limit that it can support, so check the load capacity in the specs ahead of time. Then consider the heaviest thing you might want to put on the tripod, which is usually your biggest SLR with its biggest lens, which can easily weigh in over 8-pounds. There's no need to whip out a scale鈥�the camera and lens manuals will give weights and you can add them together.

You may be tempted to round-up and get a tripod and head that hold far more weight than you need so that you have room to grow. However, bear in mind that a tripod that can hold more is also a physically larger and heavier tripod.

Durability

If you鈥�re hard on your gear or plan on traveling through rough conditions, you'll want a more durable tripod. In addition to weighing less, carbon fiber tripods are also hardier than tripods made from other materials. I once accidentally ran over my tripod with a car in the middle of the Mojave (long story) and was very glad that I had a carbon fiber tripod with a ball head that was carved from a solid block of aluminum. Though scratched up, the tripod still works fine.