Operation Manual

© proDAD GmbH
12
Unwanted rolling shutter effects
A CMOS sensor is an image sensor used in camcorders and digital cameras.
The rolling shutter effect is a positional error in the video, which occurs in moving footage when
the frame is scanned line by line.
If the image is static, the footage is correct because all points of the frame are exposed at their
correct positions. Rolling shutter effect may result in the case of a subject in motion or a moving
camera, when a frame is scanned line by line (i.e. not all at exactly the same time).
If the rolling shutter effect (distortions or wobbling picture) should appear after the stabilization,
this is a CMOS-weakness of your camcorder. Mercalli will reveal this weakness. You can remove
this effect only by activating the option Rolling-Shutter Compensation in the section
Smoothing the camera path / Stabi-Cam.
Common rolling shutter effects are:
• Jello effect
• Skew, geometric distortion occurring in pan shots
• Wobble (similar to heat shimmer)
• Vibrations and compression
Interesting sample videos regarding stabilization / correction with Mercalli V4 SAL:
Sample videos