Most camera rigs have 3 extensions. However, some camera rigs use 3 to 4 extensions. This means that 2 or 3 locks will be added. So which one is better?

The 3-section telescopic stand is relatively stable, with a shorter opening time because it has fewer locks. However, there is a disadvantage that if the camera rigs are the same height, fewer sections means that each section will be longer, then the length of the fold will be longer.

That four telescopic tripod may be relatively poor stability, the opening time will be slightly longer, but it seems no big deal. Its advantage is that you can have a smaller folding length to facilitate your travel.

Each leg has its own lock so that they do not accidentally open and will not collapse during filming. There are two types of locks: plate locks and twist locks. The basic choice is based on personal preferences. In general, cheaper tripods usually use plate locks, which have been faster and easier to clean in my experience.

There are many high-end stands that also allow you to change the feet, some suitable for indoor use, such as with rubber boots, while others are suitable for outdoor use, such as stainless steel nails / claws. If you use a tripod with a rubber cap when shooting in a slippery environment, your shots will be more stable.