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G**Y
发帖数: 33224 | 1 看看他说三脚架/球头：
How do you tell if you've got a problem? Mount a longish lens on your camera
and tripod (a 70-200mm or similar will do). Frame a shot with the tripod
head loosened. Tighten the head down. Did your shot move? If yes, then you'
ve got a bad head. Now take a 1/2 second exposure (why 1/2 second? I want
the shutter to move in two actions, not one continuous one) while carefully
watching the front of the lens. Did you see it move up/down/sideways in any
fashion? If yes, then you've got a bad head and/or legs. Another possible
test: lock the camera down. Pull down on the front of the lens slightly and
release. It shouldn't move.
我觉得这在物理上根本就是不可能呀。那么长的镜头，力矩多大呀，怎么可能压下去不
动呢。手握相机那头，按一下不动，感觉也是不可能的呀。这根本就是忽悠。
最可怜的是--我居然信了。估计RRS也给他钱了。
link:
http://www.bythom.com/support.htm |
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