Forgot Password
Pentax Camera Forums Home
 

Reply
Show Printable Version Search this Thread
11-29-2010, 05:39 PM   #1
Pentaxian
amoringello's Avatar

Join Date: May 2008
Location: Virginia, USA
Photos: Gallery
Posts: 1,429
Should SR noise occur when SR is off?

When I have SR turned off, or when I use a lens (such as Lensbaby) that does not emit info to allow SR to be turned on, I still hear what seems to be the SR mechanism.

I set shutter speed to two seconds and took a photo with SR both on and off. Still there was a small grinding noise during long exposure.

I definitely see an effect (not at 2 seconds, but a reasonable shutter speed), so SR doesn't seem to be active when turned off.

Any ideas why there is any noise coming from the camera when SR is off?

11-29-2010, 05:41 PM   #2
Pentaxian
amoringello's Avatar

Join Date: May 2008
Location: Virginia, USA
Photos: Gallery
Posts: 1,429
Original Poster
Hmmm, tried a few more times. Sometimes the noise is louder with SR on, if I listen carefully.

Just on a hunch I put the thing in Mirror lockup mode. The whole time the mirror was up, but no exposure allowed yet, the noise was still there.

Could it be that the mirror lockup mechanism consistently that noisy?
11-29-2010, 05:48 PM   #3
Pentaxian
Wheatfield's Avatar

Join Date: Apr 2008
Location: The wheatfields of Canada
Posts: 10,157
The sensor is held in position by the same mechanism that is responsible for shake reduction. Consequently it makes a similar noise whether SR is on or off.
11-29-2010, 05:50 PM   #4
Pentaxian
amoringello's Avatar

Join Date: May 2008
Location: Virginia, USA
Photos: Gallery
Posts: 1,429
Original Poster
Duh. Well, I haven't felt that stupid in a while.
That makes a lot of sense.
Thanks.

11-29-2010, 06:00 PM   #5
Pentaxian
Wheatfield's Avatar

Join Date: Apr 2008
Location: The wheatfields of Canada
Posts: 10,157
Sorry, I didn't mean to explain it that way.
11-29-2010, 06:03 PM   #6
Pentaxian
amoringello's Avatar

Join Date: May 2008
Location: Virginia, USA
Photos: Gallery
Posts: 1,429
Original Poster
Oh, no reflection on your post. Nothing you could have said would make me feel better.
It is an obvious answer that I should have been able to work out myself.
:-)
Reply

Bookmarks
  • Submit Thread to Facebook Facebook
  • Submit Thread to Twitter Twitter
  • Submit Thread to Digg Digg
Tags - Make this thread easier to find by adding keywords to it!
camera, dslr, k-5, k-5 ii, k-5 iis, k5, noise, pentax k-5, shutter, sr
Thread Tools Search this Thread
Search this Thread:

Advanced Search


Similar Threads
Thread Thread Starter Forum Replies Last Post
SR noise in K-x Hemi345 Video and Pentax HDSLRs 3 02-17-2011 09:17 PM
Noise Nubi Pentax DSLR Discussion 30 06-28-2010 02:17 PM
K7 and noise ... again. jpzk Pentax DSLR Discussion 128 11-24-2009 09:55 AM
Noise Simon23 Troubleshooting and Beginner Help 6 05-12-2009 08:03 AM
cs3 noise filter vs. noise ninja vs. ??? reknelb Pentax DSLR Discussion 0 03-04-2008 04:55 PM



All times are GMT -7. The time now is 07:47 AM. | See also: NikonForums.com, CanonForums.com part of our network of photo forums!
  • Red (Default)
  • Green
  • Gray
  • Dark
  • Dark Yellow
  • Dark Blue
  • Old Red
  • Old Green
  • Old Gray
  • Dial-Up Style
Hello! It's great to see you back on the forum! Have you considered joining the community?
register
Creating a FREE ACCOUNT takes under a minute, removes ads, and lets you post! [Dismiss]
Top