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02-18-2015, 02:22 AM   #1
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Noisy LV

What makes a constant noise with LV on? You may hear it even when SR is off and camera body iron-fixed on a tripod.

02-18-2015, 02:49 AM   #2
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The SR mechanism still makes a little bit of noise to keep the sensor locked in place.

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02-18-2015, 02:52 AM   #3
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Yes I have often noticed that. I think what it is (someone will correct me if I am wrong), the electrical actuators holding the sensor in position. If its not held in position then it just flops about (which why people often report hearing loose parts when they shake their cameras!).
02-18-2015, 03:07 AM   #4
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But it makes no sound when you are in a camera viewer view mode, not in LV.
Why the difference?

02-18-2015, 03:56 AM   #5
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I would guess that when using OVF the sensor locks in place when you press the shutter button or something similar.
02-18-2015, 10:03 AM   #6
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On some models there is an option "SR on always" (with live view) or "SR only at moment of capture". The second one will be quiet, but the view in the LCD may be more shaky as it is not stabilized until you hit the shutter.
02-18-2015, 11:27 AM   #7
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I would take a look at the anti aliasing simulator to see if it's turned on.
02-18-2015, 01:09 PM   #8
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So if the SR mechanism is still activated and makes a noise even when turned off [to keep sensor plate locked in place] then the claim that mechanical SR is too noisy to use in Video mode [hence the IQ destroying software SR forced on us] is just a pile of horse manure..

02-18-2015, 02:21 PM   #9
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QuoteOriginally posted by Steve.Ledger Quote
So if the SR mechanism is still activated and makes a noise even when turned off [to keep sensor plate locked in place] then the claim that mechanical SR is too noisy to use in Video mode [hence the IQ destroying software SR forced on us] is just a pile of horse manure..
On the K-5 it was kind of noisy if you moved arround alot but it gave you a really steady shot. Not this crap that the K-3 gives you.
02-18-2015, 02:25 PM   #10
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Yes, but what I'm saying is that if it still makes a noise when set to OFF, then there's not point to software SR after all, so the mention of 'noise' as the reason for not using mechanical SR in video mode isn't right.
FYI: I never noticed any noise on the K-7 when using SR with video. And it was really silky smooth SR too.

In any case, SR isn't to smooth out violent movement, only hand jitter.
02-19-2015, 10:13 PM   #11
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Are you sure it isn't the aperture adjusting? Watch the aperture setting to see if its changing. There is an audible noise when this happens.
02-20-2015, 12:45 AM   #12
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You are right with the aperture setting sound. THX for that finding, as I did not notice that sound before. But there is also a constant sound like fan/vent. Actually it sounds like notebook fan. At first I was curious if there is a fan inside K-3 body (to cool the image sensor?).

-----
QuoteOriginally posted by wibbly Quote
Are you sure it isn't the aperture adjusting? Watch the aperture setting to see if its changing. There is an audible noise when this happens.
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