Originally posted by harleyrider ...
Also there`s the fact that when your looking thru the LCD live view on a Canon or Nikon camera, live view if Im understanding this right, it would be stable the hole time unlike a Pentax live view beings the stabilization does react until the shutter open.
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Actually stabilization works in LV with Pentax too, it just doesn't work with the optical viewfinder (reason for this being that it is sensor that is moved and in LV you get the image from the sensor). Various reviews seem to rate OS systems about 1 stop better, but then the ones I've read have hardly been scientific about it. At any rate, the Pentax in-body stabilization works, and my experience would suggest an advantge two stops (or a bit more) from wide to short tele (I don't have much earlier experience to compare with with longer focal lengths). It might be that the more popular brands have also considered the sales benefit that would result from giving a definite advantage to buying new lenses ;-)