Originally posted by ogl There are also statistics of users that SR can cause blur in normal condition.
I don't think it makes sense to design a product feature that needs interpretation by the user with the technology available today. The camera has the information about focal length, metered light, and the settings of the camera. If Pentax didn't provide the logic in the software to be able to modify the amount of shake reduction needed for the settings of the camera when it has all this, it would be a very poor implementation, in my opinion.
The magnetic fields are on all the time, when SR is "off" the camera simply maintains static fields. The only place the logic would break down is when the camera is mounted on a tripod as the camera has no way of knowing when it is or isn't on a tripod. It just seems logical that this is what is being said in the manuals.
I can't see any logic in not having the camera know that it can or can't respond fast enough to a shutter speed and adjusting the magnetic fields accordingly, can you? I would also assume there is a shutter speed where SR just can't keep up, and at that point assume the camera just moves the sensor into the static position. Wouldn't that be the smart thing to do? Why would you need or want the user to have to interpret this when there is no magic needed?
I will say, if it is true for you that SR off works better, then that all that counts. For me, an old guy with wet spaghetti for arms, SR off and hand held doesn't work, so I leave it on.
Thank you
Russell