Forgot Password
Pentax Camera Forums Home
 

Reply
Show Printable Version Search this Thread
09-03-2012, 12:26 PM   #31
Pentaxian
thibs's Avatar

Join Date: Jun 2007
Location: Belgium
Photos: Albums
Posts: 5,267
QuoteOriginally posted by Anvh Quote
From what i know and have seen the lenses with a short focus throw are also the faster lenses to focus.
Obvious but then not for everybody it seems.

09-03-2012, 12:30 PM   #32
Pentaxian




Join Date: Dec 2011
Posts: 1,347
[deleted]

Last edited by beholder3; 08-11-2013 at 07:20 AM. Reason: [deleted]
09-03-2012, 12:34 PM   #33
Veteran Member
starbase218's Avatar

Join Date: Sep 2009
Location: Planet Earth, Sol system, Milky Way galaxy, Universe
Posts: 1,118
I give up; it's simply not worth it. I tried to explain it but apparently that did not succeed. Have fun. See ya.
09-03-2012, 01:31 PM   #34
Pentaxian
RobA_Oz's Avatar

Join Date: Nov 2008
Location: Tasmania, Australia
Photos: Gallery
Posts: 4,334
QuoteOriginally posted by Anvh Quote
It are not the motors that fail per se, also the AF mechanism have problems but Pentax is the only one the have lenses with 3 different ways of focusing so very complex.
I'm not sure what you mean by that. The only references I've seen are to failed drive motors. I suspect that language may be failing, too, in the reports that people have made, in which they describe the motors as having "burnt out". I presume that is the phrase used by the repair service, but it makes no sense in the case of a piezo motor.

I have seen people here speculate about the single drive motor being "unbalanced" and causing failure of the mechanism, but AFAIK that's only been guesswork and not direct experience. My experience has been with a jammed motor, for which a repair process thread was created here.

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!
google, lenses, motor, patent, patents, pentax news, pentax rumors
Thread Tools Search this Thread
Search this Thread:

Advanced Search


Similar Threads
Thread Thread Starter Forum Replies Last Post
Lens aperture patent parsons Pentax News and Rumors 18 07-24-2012 01:07 AM
new lens patent of pentax feishui Pentax News and Rumors 85 06-24-2012 12:28 PM
new 26 - 340 f3.3 -5.6 zoom patent filed ukwoody Pentax News and Rumors 8 05-15-2011 12:45 AM
Ring motor pederd Pentax News and Rumors 9 04-02-2011 04:24 AM
Anyone notice the marco ring flash patent from Pentax? Red Pentax News and Rumors 21 09-12-2008 02:41 AM



All times are GMT -7. The time now is 05:33 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