Quote Originally Posted by bburns223
What is the number behind weight rating?

I don't know, but it doesn't work very well as a performance indicator; certainly not for comparison between manufacturers, and often times not even between different models of the same manufacturer.


Quote Originally Posted by bburns223
If a tripod is rated to 15 lbs, can it hold 15 lbs of equipment?

Yes. It can "hold" the equipment. That may be useful to know if you're shooting timelapse or something that doesn't require that you ever touch the equipment. But if you actually plan to "use" the equipment, that's a whole different matter altogether.


Quote Originally Posted by bburns223
Can that said tripod hold an 800 5.6 IS lens and 1D body? I'm aware the answer to that question is obviously no.

Actually, the answer is "yes". The tripod will hold it just fine. In fact, it will be very stable as long as you don't touch the camera or lens. [] Of course, most photographers care about how it will actually perform during use. The weight rating doesn't tell us anything about that, unfortunately.


Quote Originally Posted by bburns223
But then if it can't hold 15 lbs, what is "rated to 15 lbs" supposed to mean?

It means that you can put that much gear on the tripod (day in and day out) without worrying that the tripod will break and send your gear crashing to the ground. It doesn't tell you anything about the performance during use (necessarily).


Quote Originally Posted by bburns223


ugh... So, To what extent is weight rating deceptive?

Some of the expensive tripods have weight ratings that more closely correlated with performance during actual use, but even for the $5000 tripods it's best to use about 1/3 the weight rating.