The general rule of thumb for capturing sharp, handheld imagery is that you should not handhold a camera at shutter speeds slower than a shutter speed equivalent to the focal length of the lens. This means a 200mm lens shouldn’t be handheld at speeds slower than 1/200-second, a 150mm lens slower than 1/150-second, a 50mm lens slower than 1/50-second, and a 20mm lens slower than 1/20-second.
Steady Shot on Sony came out; with this image stabilization, it was possible to handheld with much longer exposures.
If it is that GREAT! Then why not use it all the time.
Image stabilization on fast-moving objects results in blurrier and shakier photos than without the image stabilization. Furthermore, image stabilisation relies on movement, if you mount your camera on a fixed platform (tripod or similar) you risk creating a self-oscillating back feed loop. Image stabilization also seems to affect the mid-range distance bokeh, because the background in the scene is slightly moving differently than the focus point in the optical path, this resulting in a bokeh that does not have that simple shape and regularity we expect out of the highest quality glass.
Rules of Image Stabilization
- The first and most important rule of image Stabilization is this: never switch it on unless it is actually needed.
- Image Stabilization should be off if your shutter speed is over 1/500.
- If your subject is moving, you still need a shutter speed that will stop that movement, not image stabilization.
- Never use Image Stabilization on a tripod.