Ich seh es auch wie Ceph.
Wenn man sich diesen Abschnitt durchliesst, wird es auch klar.
"Q: What about IS and tripods ?
A: There are some rumors about there that state that the IS gets damaged when activated on a tripod. This is obviously just - nonsense. This is what you can read in the manual: "Do not set the image stabilizer switch to 'I' when using the camera on a tripod. Doing so may cause the image stabilizer to act erratically. Turn the image stabilizer off before using the camera on a tripod.". Furthermore this is only true for the following lenses:
* EF 28-135mm f/3.5-5.6 USM IS
* EF 75-300mm f/4-5.6 USM IS
* EF 300mm f/4 USM L IS
* EF 100-400mm f/4.5-5.6 USM L IS
Here the explanation for Chuck Westphal (Canon USA):
"The IS mechanism operates by correcting shake. When there is no shake, or when the level of shake is below the threshold of the system's detection capability, use of the IS feature may actually *add* unwanted blur to the photograph, therefore you should shut it off in this situation. Remember that the IS lens group is normally locked into place. When the IS function is active, the IS lens group is unlocked so it can be moved by the electromagnetic coil surrounding the elements. When there's not enough motion for the IS system to detect, the result can sometimes be a sort of electronic "feedback loop," somewhat analogous to the ringing noise of an audio feedback loop we're all familiar with. As a result, the IS lens group might move while the lens is on a tripod, unless the IS function is switched off and the IS lens group is locked into place."
In 2000 Canon released the next generation IS professional lenses. These lenses feature a "tripod-detection" mode which means that it is no problem to use IS on a tripod. Even more than that - IS will correct vibrations caused by the mirror operations of the camera. So far the feature is available on the following lenses.
* EF 300mm f/2.8 USM L IS
* EF 400mm f/2.8 USM L IS
* EF 400mm f/4 USM DO IS
* EF 500mm f/4 USM L IS
* EF 600mm f/4 USM L IS
The new
* Canon EF 70-200mm f/2.8 USM L IS
... is the first IS incarnation with an improved IS effectiveness of up to (offically) 3 f-stops."
Bei den neuen (17-85 und 17-55) tippe ich auch mal auf 3. Generation. Gerade beim 17-85 ist schon eine enorme Stabilisation im Sucherbild zu erkennen.