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Old Aug 8, 2007, 9:45 PM   #1
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Some DSLR digicams have an optical stabilizer that moves the sensor inside the DSLR body to counter movement.
Others have a fixed sensor but a moving prism in the lens.

The question is: what if one were to take a DSLR with a stabilized sensor, and use a prism-stabilized lens on it? Would this improve stabilization?
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Old Aug 8, 2007, 10:29 PM   #2
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No (unless a system was invented so that the lens and body could communicate with each other).

The body would be trying to compensate for camera movement based on gyros to detect motion.

So, you'd end up causing blur because you'd be delivering a stablized image to a camera expecting the image to be shifting based on it's motion detectors (hence, the in body stabilization would cause blur from moving the sensor when the image is already stabilized).

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Old Aug 9, 2007, 12:54 AM   #3
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The lens and body would have to be specifically designed to work together. As Jim says, the result of putting a stabilized lens on a stabilized camera body if they didn't communicate, would be worse than either working separately.

It would be interesting to see what could be done with them working together though. The motions involved are both linear (up/down, and left/right, with fore/aft not necessary) and rotational (pitch, yaw, and roll, in aviation terms). Sensor shift could compensate for up/down, left/right and roll, with lens compensating pitch and yaw. Could possibly correct better than a single system.

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Old Aug 9, 2007, 12:42 PM   #4
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First, neither Canon nor Nikon camera bodies have the mechanical image stabilization (the one that physically moves the sensor in the camera body), and rely entirely on the optical image stabilization (the one with the optical element in the lens that shifts the image that the camera's image sensor receives), and Canon and Nikon lenses won't fit on camera bodies that do have the mechanical image stabilization (i.e.: Sony, Pentax, Olympus). So you can't do what you suggest.

Second, you'd have two independent systems trying to compensate for the same problem. The result would be over-compensation. The motion would be reversed, but the blur would be the same. The image would have exactly the motion blur that the two systems were trying to remove independently.
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Old Aug 9, 2007, 2:26 PM   #5
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This link will answer the big question. E-510 tested with IS Leica lens.

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