Originally posted by hcarvalhoalves Pertinent question:
Can't in-body IS and lens IS be used both at the same time? If so, to always have Penta'x SR is a win-win.
I am sorry but it does NOT work that way. When both lens based stabilization AND in body stabilization are used together, they cancel each other out rather than be cumulative. Here is why....
- As the light passes through the lens, accelerometers senses physical motion in the axis and make micro adjustments on an optical element in order to stabilize the image as its projected on the sensor (within the body).
- In body stabilization has another set of accelerometers that again sense the same physical movement, and again make micro adjustments in the position of the sensor in the X and Y plane (up and down) to mitigate the motion.
- However when used together in series - light passes through the lens and is stabilized, and projected on to the sensor, which is then being moved to again stabilize the image - this actually just serves to un-stabilizes the image by essentially injecting motion back into the image.
So, in practice - it is one OR the other, BUT NOT both.
Lens based stabilization technology is claimed to be better, and some actual tests shows that it is by a margin (the amount of which is a function of focal length). However, in body stabilization at the sensor, is there and can be applied to all lenses that are mounted. Lens based technology is usually applied to general and telescopic lenses, but usually not wide angle because it is thought to not be needed as much to shorter focal length lenses. Wide angle or short focal length lenses, can benefit from it too - especially at dusk and evening conditions or interior low light conditions. So in practice in body may be slightly less effective of the two, but can be applied to all situations, thus its affects can be applied across the board in all situations.
... hope that helps...