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Message: <blockquote data-quote="BruceH" data-source="post: 3496227" data-attributes="member: 106398">Hello David ....  I believe I understand what you saying but it is just the opposite of what is expected.  The IS system should have all but eliminated those small on going movements but would have much less of an impact on the less frequent but more noticeable jerks.  That leads me to ask the question, are you sure the IS system was engaged?  After seeing no improvement did you lower the Canon to see if the green light was on?  The green light is on when the IS system is engaged and the light is off when the system is not engaged.  Turning the IS on and off may sound extremely basic but the button on the Canon happens to be very "tocuchy".  If you hold it down to long (and believe me, to long is not long at all), the system will turn on and immediately turn off.  When turning the system on, the user should hear a thunk sound and feel a slight clunk as the system engages.  The same happens when turning it off although there is a very slight difference in the sound.  It is very easy for those unfamiliar with the Canon to hold the button down for a split second to long and get a double thunk and clunk!  What they have done is immediately turned the IS on and off.  However since they heard a sound and felt the clunk, they are under the impression that the system is on when it is not.  The best advice for a new user who is not seeing a reduction in movement is to slightly lower the binocular and look to see if the green confirmation light is on.  Once a user gets use to the operation of the Canon (which is not long), then this step is not necessary.If someone checked out the Canon casually for just a minute or so, say at a stand at Birdfair, then I can see the possibility of the above scenario.  If you are sure the IS was engaged, then I am at a loss as to why you did not see the elimination of the small ongoing movements we all experience with binoculars.  Even when I am sitting down with the elbows supported on the chair arms, I can still pick up movements from the heart beat and the act of breathing and also the very small ever ongoing muscle movements.  The engagement of the IS all but eliminates those small movements for me.</blockquote>

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