Nikon D300 User Manual page 629

too. These combined movements can be enough to cause the
strange wobbly look in the video. I call this the "jellywobble
effect". Like a bowl of Jello, your video looks like it is
wobbling. What can you do?
Avoiding the "Jellywobble Effect"
Primarily, you have to be careful not to allow too much
camera movement. It truly is best to use the D300S on a nice
fluid-head video tripod if you want great results. I've found
that Nikon's vibration reduction (VR) lenses help when you
don't want to use a tripod, since they stabilize the camera a
little. VR won't help much if you're walking while videoing,
since the camera movements are often too great for the VR
system to overcome. If you're standing quietly and doing
your best to hold the camera perfectly still, it will help
overcome small movements caused by your heartbeat and
breathing.
This is one of the main differences between a dedicated video
camera and a hybrid like the D300S. Most true video cameras
use a CCD sensor instead of a CMOS sensor like the D300S
has. A CCD sensor does not have a rolling shutter but uses a
global shutter instead. Global shutter simply means that a
dedicated video camera does not scan the image one line at a
time. It uses the whole sensor at once to grab the image, not
individual lines of the sensor. There are some newer low-cost
video cameras on the market that use a rolling shutter, but the
better video cameras use a global shutter.
This is probably the worst problem we'll discuss concerning
D300S video. True videophiles will turn up their noses at a
rolling shutter. They'll buy a dedicated video camera with
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