Forgot Password
Pentax Camera Forums Home
 

Reply
Show Printable Version Search this Thread
06-28-2012, 06:17 AM   #1
New Member




Join Date: Dec 2011
Location: New York, NY
Photos: Gallery
Posts: 11
Tamron 28-75 f/2.8 focus ring

Hi,
I have a simple question. If you own a Tamron 28-75 f/2.8, and you set your camera to manual focus, is the movement of the focus ring smooth? In my copy, it seems to go in discrete positions, almost as an aperture ring. It doesn't happen with the Tamon 17-50, so I wonder if I should send it back for repairs.

Thanks
Alessandro

06-28-2012, 06:45 AM   #2
Senior Member




Join Date: Sep 2009
Location: Beautiful Bavaria :-)
Posts: 123
I had the same issue with my brand new Tamron 28-75 lens. It feels exactly like you describe it, like subdivided in many little steps or a sprocket in use for the focus ring.

I sent it to Tamron Germany for service and didn't hear from them 6 weeks. After a claim, I was told "we are waiting for spare parts from Japan", but two days later I got the lens back - obviously untouched and without a remedy for the issue.

But manual focussing works in spite of the strange noise and the feel, and AF is spot on, so I decided to leave it alone.

BTW, a fine piece of optics.

So, don't worry unless you notice to have missed focus in MF.
06-28-2012, 06:50 AM   #3
New Member




Join Date: Dec 2011
Location: New York, NY
Photos: Gallery
Posts: 11
Original Poster
Thanks, good to know!
06-28-2012, 07:56 AM   #4
Pentaxian
liukaitc's Avatar

Join Date: Jul 2010
Location: New York
Photos: Albums
Posts: 1,005
if you bought brand new, then you can just go to store for exchange loh, see if different copy feel different

06-29-2012, 02:01 AM   #5
Veteran Member




Join Date: Jul 2008
Location: Var, South of France
Photos: Albums
Posts: 1,071
Mine feels just like that, to the point where manual focus is tricky...
01-01-2013, 06:48 PM   #6
Site Supporter
johnnie518's Avatar

Join Date: Jun 2012
Posts: 63
I suddenly got this issue with my 17-50. It was always smooth before. I wasn't sure if something happened when I dropped my bag this weekend, but now it's acting like how you describe.

Did anyone ever find out a solution?
01-07-2013, 11:18 PM   #7
New Member




Join Date: Dec 2012
Posts: 19
I bought this lens new around April and currently the manual focus feels smooth.
01-07-2013, 11:58 PM   #8
Pentaxian
Edgar_in_Indy's Avatar

Join Date: May 2010
Location: Indiana, USA
Photos: Gallery
Posts: 2,554
Mine turns smoothly and easily, but if I turn it quickly I can hear a slight whirring or ratcheting noise. I assume the noise is from some kind of gears inside the lens and is normal. My Sigma 30mm 1.4 and 10-20mm f4-5.6 behave much the same way.

01-08-2013, 12:54 AM   #9
Veteran Member
crossmr's Avatar

Join Date: Jul 2009
Location: Seoul, Korea
Photos: Gallery
Posts: 302
I never noticed it until you mentioned it. Mine turns smoothly, but yes there is a tiny noise as Edgar describes
01-08-2013, 09:57 PM   #10
Veteran Member
Venturi's Avatar

Join Date: Mar 2008
Location: Tulsa, OK
Photos: Gallery
Posts: 2,639
There's definitely vibration/noise from the screw drive gears as you focus. I haven't noticed it causing focus issues though, just feels weird compared to other lenses.
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!
f/2.8, f/2.8 focus, focus, k-mount, pentax lens, slr lens, tamron, tamron 28-75 f/2.8
Thread Tools Search this Thread
Search this Thread:

Advanced Search


Similar Threads
Thread Thread Starter Forum Replies Last Post
Focus Ring on DA 35 macro makes a clicking noise; manual focus ... this normal? eadrian75 Pentax SLR Lens Discussion 2 04-12-2011 12:51 AM
50-135mm focus ring kbryant Pentax SLR Lens Discussion 2 01-20-2011 03:39 PM
DA 40 Focus ring stuck gus007 Pentax SLR Lens Discussion 9 12-13-2010 01:13 PM
FA 28mm/2.8 focus ring nev Pentax SLR Lens Discussion 2 11-29-2010 01:45 PM
How to stiffen mf focus ring on fa ltd and da ltd primes? QuixoticTonic Pentax SLR Lens Discussion 4 08-13-2010 09:52 PM



All times are GMT -7. The time now is 07:36 PM. | See also: NikonForums.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