Forgot Password
Pentax Camera Forums Home
 

Reply
Show Printable Version Search this Thread
11-10-2009, 10:44 PM   #1
Forum Member




Join Date: Sep 2009
Location: Western PA
Posts: 67
Are extension tubes available for the K20D?

I have seen extension tube sets on ebay, but they do not allow any of the electronics to work. Does anyone make an extension tube set for the K20D that has electrical contacts so that all of the functions can be used?

11-10-2009, 10:52 PM   #2
Ash
Community Manager
Loyal Site Supporter
Ash's Avatar

Join Date: Mar 2007
Location: Toowoomba, Queensland
Photos: Gallery | Albums
Posts: 22,678
None that allow AF function. But an old TC can be converted to an A extension tube by gutting it...

Last edited by Ash; 11-10-2009 at 11:02 PM.
11-10-2009, 10:53 PM   #3
Damn Brit
Guest




Moved to Beginners Corner.
11-12-2009, 03:22 AM   #4
Pentaxian




Join Date: Aug 2007
Photos: Gallery
Posts: 1,563
They are hard to find. In the Netherlands I know one shop that sells these extension tubes. They are original Pentax, and therefore expensive...

foto video BOOM - videocamera's, fotocamera's, accessoires: Producten

- Bert

11-17-2009, 05:49 PM   #5
Veteran Member
GerryL's Avatar

Join Date: Jan 2009
Location: CA
Posts: 2,731
If you want to do macro, it is better to do manual.
Focusing manually is better too and AF is not very usable since at close focusing, it would be more of fine focusing.
Stopping down isn't so bad either for macro.
11-18-2009, 04:09 AM   #6
Veteran Member
Mike Cash's Avatar

Join Date: Jan 2007
Location: Japan
Photos: Gallery
Posts: 6,952
No electronics, but I use a set of Pentax extension tubes from about 1960.
11-18-2009, 04:14 AM   #7
Pentaxian
newmikey's Avatar

Join Date: May 2007
Posts: 1,456
Try to search Ebay for Jessops PKA tubes. They have all of the contacts, minus the AF connection (useless anyway with macro). I use them on my K20D regularly.
11-18-2009, 09:12 AM   #8
Veteran Member
GerryL's Avatar

Join Date: Jan 2009
Location: CA
Posts: 2,731
It is actually kind of hard to find nowadays brand new second/third party accessories for Pentax since there are not a lot of Pentax users.
Second/Third party products won't even make them since Pentax doesn't even advertise and if nobody buys Pentax cameras, then nobody would buy their products too.
Unlike before when Pentax was a top player, most second/third party brands produced accessories for Pentax.
This is also the reason why you could mostly find second/third party accessories that are very dated. Even brands you no longer hear anymore, but as we see now known brand name (like Kenko for extension tubes) accessory producers don't even bother to make Pentax but make them for Nikon or Canon.
If you like a lot of accessories for your camera, then Pentax is not a way to go.
Even cheap ringflashes are extensively made and distributed only for Canon & Nikon by Tumax.
Pentax users are like southpaws or lefties..we always have to make do or find a way around a problem.

11-18-2009, 09:13 AM   #9
Veteran Member
GerryL's Avatar

Join Date: Jan 2009
Location: CA
Posts: 2,731
I use the Vivitar AT-22.
No electronic contacts too from way back 1900 something..
11-18-2009, 02:18 PM   #10
Loyal Site Supporter
Canada_Rockies's Avatar

Join Date: Nov 2007
Location: Sparwood, BC, Canada
Photos: Gallery | Albums
Posts: 9,134
The best choice for close ups and macro is Catch-in-focus. I would recommend any set of tubes with contacts for exposure metering, but without the AF contacts. My one and only tube is 50mm without contacts for exposure, but since I use it only with my M lenses, It doesn't bother me. The contacts don't work anyway.
11-18-2009, 03:30 PM   #11
Pentaxian




Join Date: Feb 2009
Location: Alameda, CA
Posts: 3,194
QuoteOriginally posted by Ash Quote
None that allow AF function. But an old TC can be converted to an A extension tube by gutting it...
Here's one of my PKA extension tubes. It is just a gutted Vivitar 2X TC:





Here's a photo of my Tamron 1.4X TC, taken with a DA 40mm Ltd. at its closest focusing:





Here's a photo of the same Tamron TC, taken with the DA 40mm Ltd. coupled with the aforementioned extension tube. Note that the DA lens does not have an aperture ring, thus requires A contacts for aperture-control function.





All photos are resized only, no cropping.
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, extension, extension tubes, pentax help, photography, tube
Thread Tools Search this Thread
Search this Thread:

Advanced Search


Similar Threads
Thread Thread Starter Forum Replies Last Post
Kenko Extension Tubes for K20D Goz Pentax SLR Lens Discussion 2 06-10-2010 02:32 PM
Extension tubes Gary G Pentax DSLR Discussion 2 04-14-2010 06:28 PM
Extension Tubes kpfeifle Pentax Camera and Field Accessories 2 02-29-2008 12:24 PM



All times are GMT -7. The time now is 09:39 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