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Message: <blockquote data-quote="Rexer John" data-source="post: 119111" data-attributes="member: 12691">As I understand it, there's one or more elements in the lens that "floats" to counter any lens wobble/shake.It is made free to float when the shutter is half pressed, which significantly stabilises the image.When you do a tripod shot in VR mode, the lens is allowed to move from it's fixed position and it takes a fraction of a second to settle. That's enough to blur a shot that is taken immediately, even the mirror flipping can cause a slight jolt of the floating element in VR mode.Basically the VR lets the lens wobble to counter your hand wobble. You don't want it to be allowed to wobble when it's on a tripod.That's why all VR lenses have a switch to turn the function off.</blockquote>