Re: When Good I.S. Goes Bad
- From: Daniel Silevitch <dmsilev@xxxxxxxxxxxx>
- Date: Sun, 29 Apr 2007 16:05:57 GMT
On 29 Apr 2007 08:08:44 -0700, mutefan@xxxxxxxxx <mutefan@xxxxxxxxx> wrote:
I was at an indoor birthday party yesterday here in cloudy
Pennsylvania. I have a Canon A710 and set the camera on Manual, to
shoot lots of old folks and also little kids and animules without a
flash. TMALSS (to make a long story short), only a third of the shots
came out at all. The rest were blurry even though they were in focus
when I shot them.
A friend who is a digital wizard said I shouldn't go complaining to
Canon just yet, and that I.S. does not work if the lighting conditions
and/or focus is out of synch. But I got no "BUSY" warning, and there
was no "fluttering hand" icon or low light warning. ISO was 400 or
200.
That makes no sense. The IS system operates independently of the
focusing and metering system. There's a set of motion sensors buried
somewhere inside the camera, connected via a feedback loop to a lens
element which moves to null out vibration. The contents of the image,
including whether it's properly focused, are irrelevant. It should work
even if the lens cap is on (not that it'll do anything _useful_, but it
should still work).
How do you know when good Image Stabilization is broken? (For the
record, I have it set on Continuous--whatever that means.)
Take a picture of something static, in decent light. Turn off the IS and
take the same picture again. If the second picture is less blurry than
the first, your IS system has problems.
-dms
.
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