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<blockquote data-quote="aroy" data-source="post: 440107" data-attributes="member: 16090">The weight ratings are generally for vertical load sitting in the centre. Any off centre moment will add. For example if a lens is 2kg and you support it at its centre of gravity, then the load is 2kg. Now if the lens is front heavy and the mount is off centre, then the load increases (one can calculate it from the off set from centre and the unbalanced load). When you are panning you may not always have the load balanced. So in general from factor of safety point of view to use at least twice the load rating.Same considerations are there for the load rating of the tripod, except that you add the weight of the head to it.One thing to be particular about when using tripods is the spread of the legs. In general try to spread them enough so that the tip of the lens lies within the circle circumscribed by the three leg tips. That will prevent the tripod from tipping over.</blockquote>

[QUOTE="aroy, post: 440107, member: 16090"] The weight ratings are generally for vertical load sitting in the centre. Any off centre moment will add. For example if a lens is 2kg and you support it at its centre of gravity, then the load is 2kg. Now if the lens is front heavy and the mount is off centre, then the load increases (one can calculate it from the off set from centre and the unbalanced load). When you are panning you may not always have the load balanced. So in general from factor of safety point of view to use at least twice the load rating. Same considerations are there for the load rating of the tripod, except that you add the weight of the head to it. One thing to be particular about when using tripods is the spread of the legs. In general try to spread them enough so that the tip of the lens lies within the circle circumscribed by the three leg tips. That will prevent the tripod from tipping over. [/QUOTE]

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