Forgot Password
Pentax Camera Forums Home
 

Reply
Show Printable Version Search this Thread
08-26-2010, 01:02 AM   #46
Veteran Member
wlachan's Avatar

Join Date: Sep 2006
Location: Canada
Photos: Albums
Posts: 2,625
QuoteOriginally posted by blende8 Quote
Unbreakable?
Well, I have seen already several examples of DA Limiteds that have simply broken into two pieces. Example: DA70
Actually I am well aware of this, and the FA50/1.4 too. They were the result of poor assembling unfortunately. Did I say Pentax QC is poor these days? But since I can fix problems like this myself, should mine separate on me, I would just reassemble it and do it better than the factory worker so there would be no chance of separating again. Who said the factory dummies didn't matter?

08-30-2010, 03:59 AM   #47
Banned




Join Date: May 2010
Location: Back to my Walkabout Creek
Photos: Gallery | Albums
Posts: 2,535
QuoteOriginally posted by blende8 Quote
Unbreakable?
Well, I have seen already several examples of DA Limiteds that have simply broken into two pieces. Example: DA70
I have seen Leica's lenses broken too, for whatever reason. And many others. People are looking with scare at many brand new plastic Sony's lenses because they look so fragile and cheap beyond belief (ah, good ol' Minolta's quality's gone forever).
Yours is a first DA Limited that I've seen broken and, with all due respect my friend, it tells nothing about the quality of the lens. There's one million possible reasons why your copy has split itself in two. I sympathise, but don't generalise if there's no justification for it and no more reasons than your personal grief.
08-30-2010, 04:20 AM   #48
Veteran Member
blende8's Avatar

Join Date: Feb 2007
Location: Bremen, Germany
Photos: Albums
Posts: 1,521
QuoteOriginally posted by Uluru Quote
with all due respect my friend, it tells nothing about the quality of the lens.
I never said so.

QuoteQuote:
don't generalise if there's no justification for it
I didn't generalize.
08-30-2010, 04:20 AM   #49
Administrator
Site Webmaster
Adam's Avatar

Join Date: Sep 2006
Location: Arizona
Photos: Gallery | Albums
Posts: 51,558
Limited lenses don't need SDMi they're small enough that the screwdrive af is lightning fast, and as such faster than sdm would be anyway. SDM would also prevent limited lenses from being small like they currently are.

08-30-2010, 07:32 AM   #50
Nubi
Guest




If they released more limited lens with SDM, I will not buy them. No thank you. But, if they released more limited lens with screw drives, then I would probably buy them even if I don't need them, just for the sake of being complete, more or less. Pretty sad diseases, LBA is. :ugh:
08-30-2010, 10:03 AM   #51
Inactive Account




Join Date: Aug 2009
Location: Lithuania
Posts: 38
i want limiteds to be as small as possible, that is maximum possible aperture with 49mm filter.
WR would be nice though.

SDM should go to DA* series together with as fast as possible aperture and no worries about filter size
08-30-2010, 10:08 AM   #52
Pentaxian
thibs's Avatar

Join Date: Jun 2007
Location: Belgium
Photos: Albums
Posts: 7,001
QuoteOriginally posted by PentaxPoke Quote
Sorry Thibs. I have done so many times, I figured people would know by now. 16-50 and 50-135.
No prob. Just wanted to know if these were again the usual culprits or other ones.
Thanks and... sorry for you btw

08-30-2010, 11:58 AM - 1 Like   #53
Veteran Member




Join Date: Oct 2008
Location: Saint-Petersburg, Russia
Photos: Albums
Posts: 410
to OP: .. i`d prefer Limited lenses with USM
08-30-2010, 12:35 PM   #54
Veteran Member
PentaxPoke's Avatar

Join Date: Jan 2008
Location: Oklahoma
Posts: 1,411
QuoteOriginally posted by ilya80 Quote
to OP: .. i`d prefer Limited lenses with USM
Me Too! (You get my vote for post of the day. )
08-30-2010, 06:08 PM   #55
Site Supporter
Site Supporter
Clarkey's Avatar

Join Date: Jan 2008
Location: Brampton, ON, Canada
Photos: Gallery
Posts: 2,456
QuoteOriginally posted by RMabo Quote
I am very happy with my DA 17-70 f/4 SDM. Smooth, near silent focusing. It is fast too.
Users are complaining about SDM being slow, but that is because screwdriven and SDM are equal in terms of speed - and they are equal because the limitation is in the camera - the AF processing in the camera - and not the lens.

Some believes that in-lens motors are faster than screwdriven, if they are not then something is wrong. In the 90's, the screwdriven AF that Pentax used was clearly faster than in-lens motors. The MZ-5 with FA 28-70 f/4 AL was a rabbit in terms of AF speed compared to similar priced Canon EOS 50E with 28-80 USM. The in-lens motor driven Canon was a turtle and Pentax was the rabbit. (according to tests made by swedish magazine FOTO).

Snip.......
Confirmed. My MZ-5n was quicker than either the Ds or the K200D to focus my 28-70 F4. However I will say that the K7 appeared to be *AS* fast with it.

I also had an EOS 650 prior to my MZ-5n and can also confirm that the 28-80 USM I had for it was slower than the MZ-5n combo.

In response to the OP, no for anything other than ring-type USM.
Please weatherproof the DA limiteds instead!
08-31-2010, 09:24 PM   #56
Veteran Member




Join Date: Aug 2009
Photos: Gallery
Posts: 1,235
QuoteOriginally posted by Clarkey Quote
In response to the OP, no for anything other than ring-type USM.
Please weatherproof the DA limiteds instead!
I agree.

My ideal would probably be D-FA screw-drive WR limiteds.
09-02-2010, 01:20 PM   #57
Veteran Member
yeatzee's Avatar

Join Date: Feb 2009
Location: Temecula
Photos: Gallery | Albums
Posts: 3,675
QuoteOriginally posted by blende8 Quote
Unbreakable?
Well, I have seen already several examples of DA Limiteds that have simply broken into two pieces. Example: DA70

Links?
09-02-2010, 02:12 PM   #58
Pentaxian
gazonk's Avatar

Join Date: Feb 2009
Location: Oslo area, Norway
Photos: Gallery | Albums
Posts: 3,746
QuoteOriginally posted by blende8 Quote
Unbreakable?
Well, I have seen already several examples of DA Limiteds that have simply broken into two pieces. Example: DA70
This morning my DA70 wouldn't focus to infinity and I discovered something, probably a screw, was loose inside. I immediately brought it to service, and it's probably a simple repair, but it's probably yet another example of substandard qc - that screw was probably not adequately fastened.
09-02-2010, 02:58 PM   #59
Pentaxian




Join Date: Apr 2008
Location: Central Ohio (formerly SF Bay Area)
Posts: 1,519
QuoteOriginally posted by gazonk Quote
This morning my DA70 wouldn't focus to infinity and I discovered something, probably a screw, was loose inside. I immediately brought it to service, and it's probably a simple repair, but it's probably yet another example of substandard qc - that screw was probably not adequately fastened.
(Probably)^4 = only speculation
09-02-2010, 03:33 PM   #60
Pentaxian
gazonk's Avatar

Join Date: Feb 2009
Location: Oslo area, Norway
Photos: Gallery | Albums
Posts: 3,746
QuoteOriginally posted by Quicksand Quote
(Probably)^4 = only speculation
Not quite, I may have been a little to cautious. It's pretty obvious that the loose part was a small screw.

The only speculative part here is if this is an example of substandard QC. We don't really know that without knowing if there are unreasonably many lenses that haven't been assembled properly.
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!
lenses, pentax news, pentax rumors, sdm
Thread Tools Search this Thread
Search this Thread:

Advanced Search


Similar Threads
Thread Thread Starter Forum Replies Last Post
645D, K-m2 and NEW LENSES DA*10-16/4 SDM, DA*20/2 SDM, DA*28/2 SDM ogl Pentax News and Rumors 165 08-11-2010 03:26 AM
SDM lenses on k-x guillermovilas Pentax DSLR Discussion 8 08-01-2010 03:45 PM
For Sale - Sold: DA 40mm Limited, DA 17-70mm SDM, DA 18-55mm builttospill Sold Items 3 02-18-2010 11:10 AM
Thoughts on 77mm limited and 55mm SDM jfsavage Pentax SLR Lens Discussion 29 06-25-2009 03:16 AM
Any one have the new SDM * lenses Yet steve917 Pentax SLR Lens Discussion 3 08-26-2007 05:52 PM



All times are GMT -7. The time now is 11:21 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