Forgot Password
Pentax Camera Forums Home
 

Reply
Show Printable Version Search this Thread
09-21-2010, 12:40 PM   #1
Site Supporter
Site Supporter
K(s)evin's Avatar

Join Date: Sep 2010
Location: Colorado
Posts: 270
Sigma HSM sound

I just received my first Sigma lens equipped with HSM focusing. What concerns me a little is the sound of autofocusing, which is distinctly different than the sound on my Tamron zoom. Am I just hearing the hypersonic waves in action or should I be concerned? It seems to focus just fine.

Thanks!

K-r (the original)

09-21-2010, 01:50 PM   #2
Veteran Member
mysticcowboy's Avatar

Join Date: Apr 2009
Location: port townsend, wa
Photos: Albums
Posts: 968
With HSM focusing, you should just barely be able to hear the motor. If it's appreciably louder than your existing lenses, I'd contact Sigma. If it is about the same loudness but just sounds different, you should be okay. Every motor will sound different. Hypersonic is just a marketing term so means nothing.
09-21-2010, 02:17 PM   #3
Veteran Member




Join Date: Apr 2010
Location: Tennessee
Posts: 1,994
I had one Sigma HSM that just didn't sound right. It had a bit of a grinding sound to it. I had other Sigma HSM's so I knew it wasn't right so I sent it back for an exchange and the replacement was perfect. It should be "whisper" quiet.
09-21-2010, 04:50 PM   #4
Veteran Member
tvfd911's Avatar

Join Date: Jan 2009
Location: WI
Photos: Gallery | Albums
Posts: 354
My 70-200mm HSM I had was just a quiet hum of the motor. There may have been the tiniest clunk as the motor engaged the clutch at times, but it was very minor.

09-21-2010, 07:01 PM   #5
Site Supporter
Site Supporter
K(s)evin's Avatar

Join Date: Sep 2010
Location: Colorado
Posts: 270
Original Poster
The best way to describe what I'm hearing is it's like a quick series of what sound like tiny little puffs of air. Thesound would probably be imperceptible in a semi-loud setting. It is certainly not grinding.
09-21-2010, 07:46 PM   #6
Veteran Member




Join Date: Mar 2007
Location: Boston, PRofMA
Photos: Albums
Posts: 3,053
should sound like swish swish or the motor is broken...
09-21-2010, 08:12 PM   #7
Veteran Member
tvfd911's Avatar

Join Date: Jan 2009
Location: WI
Photos: Gallery | Albums
Posts: 354
It sounds like it is actually making the focus adjustments according to your initial post. if the noise breaks are when the camera changes focus direction, I'm guessing your lens is functioning fine. Your description of the noise is different than how I'd view it, but different people hear and especially describe sounds differently.

Without having the lens in hand to determine, it is difficult to tell
09-21-2010, 08:45 PM   #8
Inactive Account




Join Date: Jul 2010
Location: Chicago
Photos: Gallery
Posts: 672
Do you have a p&s to take a video of it for everyone? They may be able to suggest if there's a problem better if they hear it themselves.

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!
hsm, k-mount, pentax lens, sigma, sigma hsm, slr lens, sound
Thread Tools Search this Thread
Search this Thread:

Advanced Search


Similar Threads
Thread Thread Starter Forum Replies Last Post
Sigma f2.8 24-70 HSM vs none HSM gromgull Pentax SLR Lens Discussion 11 01-10-2011 12:47 PM
Anyone used Sigma 70-200 non-HSM AND HSM? which is faster AF? Arpe Pentax SLR Lens Discussion 10 03-24-2010 04:28 PM
Sigma 70-200 HSM with Sigma 1.4 TC timk Pentax SLR Lens Discussion 3 08-09-2009 09:11 AM
Sigma 10-20 mm F/4-5.6 EX DC HSM NOT HSM for Pentax? Chilichoco Pentax SLR Lens Discussion 10 05-24-2007 04:57 PM



All times are GMT -7. The time now is 10:20 PM. | 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