Forgot Password
Pentax Camera Forums Home
 

Reply
Show Printable Version Search this Thread
03-07-2008, 05:58 PM   #1
Veteran Member
falconeye's Avatar

Join Date: Jan 2008
Location: Munich, Alps, Germany
Photos: Gallery
Posts: 6,863
Sexy image of K20D weather seals

Known?



found at 极速网-[新品] 诸多升级亮点!宾得正式发布K20D.


Last edited by falconeye; 03-08-2008 at 05:49 AM. Reason: Changed title due to first comment ;)
03-07-2008, 07:27 PM   #2
Inactive Account




Join Date: Jul 2007
Location: London
Posts: 1,067
Hi falconeye

Ooohhh........that's so sexy.....the new 'see-through' K20D. It's almost like having X-ray vision. Ain't technology marvellous, whatever will they think of next !

Best regards
Richard
03-07-2008, 07:45 PM   #3
Veteran Member




Join Date: Feb 2008
Location: Toronto
Posts: 3,915
where does the air go when you focus / zoom a weathersealed lens?
03-08-2008, 12:30 AM   #4
Pentaxian
Arpe's Avatar

Join Date: Sep 2006
Location: New Zealand
Photos: Gallery | Albums
Posts: 4,344
They don't change length so they don't have to suck in or blow out air. (The DA*s that is, they are the only weather-sealed ones)

03-08-2008, 05:32 AM   #5
Veteran Member
Matjazz's Avatar

Join Date: Sep 2006
Location: EU/Slovenia
Photos: Gallery
Posts: 774
Do you own DA* 16-50? Because I believe that when zooming it changes lenghth.
03-08-2008, 05:58 AM   #6
Veteran Member
benjikan's Avatar

Join Date: Jan 2007
Location: Paris, France
Photos: Gallery
Posts: 4,312
QuoteOriginally posted by Matjazz Quote
Do you own DA* 16-50? Because I believe that when zooming it changes lenghth.
Although internal focus the Pentax *16-50 does extend outwards when zooming through to 50mm.

Ben
03-08-2008, 07:31 AM   #7
Site Supporter




Join Date: Sep 2006
Location: Bronx NY
Photos: Gallery | Albums
Posts: 5,611
weather sealed does not mean airtight

QuoteOriginally posted by k100d Quote
where does the air go when you focus / zoom a weathersealed lens?
I imagine there is enough places where the small amount of air involved can enter/exit the system. A seal that will keep out incidental water/dust may not be airtight.

NaCl(air is "thinner" than water)H2O
03-08-2008, 09:35 AM   #8
Veteran Member
-=JoN=-'s Avatar

Join Date: Nov 2006
Location: NYC
Posts: 1,000
QuoteOriginally posted by k100d Quote
where does the air go when you focus / zoom a weathersealed lens?
it's sealed, but i dont think it's that air tight

03-08-2008, 11:10 AM   #9
Veteran Member
falconeye's Avatar

Join Date: Jan 2008
Location: Munich, Alps, Germany
Photos: Gallery
Posts: 6,863
Original Poster
QuoteOriginally posted by -=JoN=- Quote
it's sealed, but i dont think it's that air tight
Oh yes, it is. And they pump air in and out to have this ultra-silent and fast autofocus. Pentax patented and the fuzz about SDM is only to confuse the competition
03-09-2008, 09:55 AM   #10
Veteran Member
Matjazz's Avatar

Join Date: Sep 2006
Location: EU/Slovenia
Photos: Gallery
Posts: 774
I remember Pentax USA representative (the one you saw presenting K20D and K200D on you tube) saying in an interview on some exhibition, that one can zoom with DA* in the rain despite the fact that 16-50 extends when zooming.
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, photography
Thread Tools Search this Thread
Search this Thread:

Advanced Search


Similar Threads
Thread Thread Starter Forum Replies Last Post
Misc Putting the weather seals to work aerodave Post Your Photos! 5 01-07-2010 10:21 PM
Weather seals giving me urges Mister Guy Pentax DSLR Discussion 2 09-11-2009 07:57 AM
how good are the weather seals on the star * lenses? kauaiguy Pentax SLR Lens Discussion 6 03-06-2009 11:48 AM
Weather seals, how much can it take? melander Pentax DSLR Discussion 25 10-05-2008 10:34 PM
Thank God for weather seals ronald_durst Post Your Photos! 3 06-17-2008 03:16 PM



All times are GMT -7. The time now is 07:15 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