Thread: Digital phtography

Blurred pictures are a much smaller problem today than earlier. thanks to improved image stabilizers in the camera or the lens. However. they do create their own problems. and in some cases. the achievable resolution drops. Many cameras reach their highest resolution and thus the best possible level of detail precision only with the stabilizer turned off-so you lose resolution even though a tripod could have been used instead of the stabilization function.

This is mainly a problem with older models, which use an older anti-blur algorithm. Optical image stabilizers try to offset the movement of the photographer's hand through counter movements-one shakes a little more and the other, a little less. One variant uses a movable mounted sensor for stabilization; the second one is based on the principle of loose lenses. The functionality is similar: gyroscopes, which are special movement sensors, measure the available deflection and pass on the result to the control electronics, which move back either the lens or the sensor exactly according to the displacement.



Earlier stabilization .systems had to contend with' natural resonance: for a completely idle camera mounted on a tripod, the sensors and balancing elements simultaneously swing up and try to eliminate movements that don't end up occurring. Due to the shaking because of this stabilization attempt, the sharpness is reduced and the measurable resolution drops slightly. This is not a problem for most picture situations. However, whoever wants to squeeze the most precise detail from his camera and lens should make the first move towards optimization by simply turning off the image stabilizer manually at all times while taking shots with a tripod.
The electronic systems in newer cameras are intelligent enough to notice whether or not the camera is moving. They can then immediately turn on or off the anti-blur mechanisms if required .