Forgot Password
Pentax Camera Forums Home
 

Reply
Show Printable Version Search this Thread
09-18-2016, 05:47 PM - 1 Like   #1
Senior Member




Join Date: Jul 2014
Photos: Gallery
Posts: 162
The crazy world of modern teleconverters...

I don't know why, but the fact that information on these things is scattered all over the place, often conflicting, and often confusing in that a lot of the times someone's description of the converter seems to not match what the converter itself has written on it, I started this thread. Not to mention the confusion here,

Pentax K-mount Teleconverters and Adapters - Lens Reviews and Specifications - SLR and Interchangeable Lenses - Pentax Lens Reviews & Lens Database

Forget the early converters that had no electrical contact pins or screw drive accommodations, and focus on the more modern versions. A list of which are...



2x KAX Teleplus MC (no screw drive, made by Kenko)

2x KAX Teleplus MC7 (no screw drive, made by Kenko, 7 element)

2x KAX Macro Teleplus MC7 (looks like a Vivitar helicoid with green lettering, no screw drive, 7 element)

Albinar ADG Auto 2x Tele-Converter KR (manual focus)

Bower MC7 2x Pz

CPC 2x Tele-Converter MC KAR

Digital Concepts 2x AF

Focal MC 2x Converter (no screw drive, another older version says the same but has no contacts)

Gemini Auto Teleconverter 2x (PKA) (no screw drive)

JC Penney 2x

Jessop Auto Teleconverter MC 2x (no screw drive)

Kalimar 2x Tele Converter KAR

Kenco 2x KAX Teleplus MC4 (no screw drive)

Kenko Pz-AF 2x Teleplus MC4 (no screw drive, 4 element)

Kenko Pz-AF 2x Teleplus MC7 (7 element)

Kenko Pz-AF 2x Teleplus MC7 DG (7 element)

Kenko Pz-AF 1.5x Teleplus SHQ

Kenko Pz-AF 1.7x Teleplus SHQ

Kenko Pz-AF 1.5x Teleplus MC DG (hunts forever without a lot of light on non FF camera)

Kenko P-AF 1.4x Teleplus MC4 DG (4 element)

Kenko P-AF 2x Teleplus MC4 DG (4 element)

Kenko P-AF 2x Teleplus MC7 DG (7 element)

Kiron MC7 2x Teleconverter (manual focus)

Kiron 2x Teleconverter for PA/RX (no screw drive)

HD Pentax-DA 1.4x AW AF Rear Converter (not FF)
http://us.ricoh-imaging.com/wp-content/uploads/2015/04/1394730000_DA_Rear_co...lity_Chart.pdf

SMC Pentax-F 1.7x (no screw drive but focuses FOR the lens, also focuses M/K lenses)

Pentax Rear Converter-A 1.4x-S (manual focus only, with no screw drive)

Pentax Rear Converter-A 1.4x-L (manual focus only, with no screw drive)

Pentax Rear Converter-A 2X-S (manual focus only, with no screw drive)

Pentax Rear Converter-A 2X-L (manual focus only, with no screw drive)

Phoenix AF 2x (no screw drive)

Pro Cambron 2X MC7 (7 element)

ProSpec Auto 2x Tele-Converter KR (no screw drive)

Promaster Spectrum 7 1.7x Teleconverter for Pentax Z AF

Promaster Spectrum 7 2x (no screw drive)

Promaster 2x Teleconverter for Pentax/Samsung

Quantaray 2x AF ("A" works, screw drive works, SDM ?)

Rokunar Auto 2x Tele-converter (no screw drive, 4 element)

Sakar 2x Tele Converter KAR (no screw drive)

Sears Auto 2x Tele Converter 4E/MC KR (4 element)

Sigma APO 1.4x EX

Sigma APO 1.4x EX DG (not for lenses other than Sigma brand)

Sigma AF Tele Converter X1.4

Sigma APO Tele Converter 2x EX

Sigma APO 2x EX DG

Soligor C/D4 AF Tele-Converter 1.7x

Soligor C/D4 Auto Tele-Converter DG P/AF (1.7x, no screw drive)

Takumar-A 2x Tele-Converter (no screw drive)

Tamron-F AF Tele-Converter 1.4x Pz-AF MC4 (4 element)

Tamron-F AF Tele-Converter 2x Pz-AF BBAR MC7 (7 element)

Tamron-F Tele-converter 2x KR MC4 (no screw drive, 4 element)

Tokina EL 2x Converter for P/KA (manual focus)

RMC Tokina Doubler for P/KA (no screw drive)

Vivitar Series 1 1.4x AF

Vivitar 2xMC4 AF (4 element)

Vivitar Series 1 2xMC7 AF (7 element)

Vivitar 2x Macro Focusing Teleconverter MC P/K-A R-P/K (no screw drive, blue lettering)

Vivitar 2x Macro Focusing Teleconverter MC P/K-A R-P/K (no screw drive, green lettering)

Vivitar MC Tele Converter 2x PK/A/R-PK (plastic mount, no screw drive)









I'm sure I missed some, so what are they? Please post any info you KNOW first hand about these things. Anybody collect these things?


Last edited by oscaletrains; 11-06-2016 at 06:38 PM.
09-18-2016, 05:53 PM   #2
Veteran Member
MJSfoto1956's Avatar

Join Date: Dec 2013
Location: Boston
Posts: 1,290
your 4th entry should technically read: "HD Pentax-DA AF Rear Converter 1.4x AW"

M
09-18-2016, 05:56 PM   #3
Senior Member




Join Date: Jul 2014
Photos: Gallery
Posts: 162
Original Poster
QuoteOriginally posted by MJSfoto1956 Quote
your 4th entry should technically read: "HD Pentax-DA AF Rear Converter 1.4x AW"

M
Thanks
09-18-2016, 06:00 PM   #4
Loyal Site Supporter
Loyal Site Supporter
UncleVanya's Avatar

Join Date: Jul 2014
Photos: Gallery | Albums
Posts: 14,238
QuoteOriginally posted by MJSfoto1956 Quote
your 4th entry should technically read: "HD Pentax-DA AF Rear Converter 1.4x AW"

M
And that is one super awesome TC. it however is not full frame.

09-18-2016, 06:07 PM   #5
Pentaxian
mgvh's Avatar

Join Date: Sep 2010
Location: MD
Photos: Gallery | Albums
Posts: 908
There is also this one: Focal MC 2x Teleconverter. Mine has the A contacts and does fairly well with some of my old manual lenses.
09-18-2016, 06:13 PM   #6
Senior Member




Join Date: Jul 2014
Photos: Gallery
Posts: 162
Original Poster
Thanks for the additions.
09-18-2016, 06:30 PM   #7
Site Supporter
Site Supporter
jcdoss's Avatar

Join Date: Nov 2012
Location: Kansas City, MO
Photos: Gallery | Albums
Posts: 2,291
You listed Pentax Rear Converter-A 1.4x-S (no screw drive) twice. I own one... what do you want to know?
09-18-2016, 06:35 PM   #8
Senior Member




Join Date: Jul 2014
Photos: Gallery
Posts: 162
Original Poster
QuoteOriginally posted by jcdoss Quote
You listed Pentax Rear Converter-A 1.4x-S (no screw drive) twice. I own one... what do you want to know?



Ooops.


Really just trying to make a definitive list of what is out there, what lenses or lens functions don't work with what, stuff like that.

09-18-2016, 06:44 PM - 1 Like   #9
Site Supporter
Site Supporter




Join Date: Sep 2010
Location: Omaha
Photos: Gallery
Posts: 455
If only Brandrx was still with us, I'm sure he would have a wealth of insightful information. I always enjoyed his posts on various TCs.
09-18-2016, 06:51 PM   #10
Loyal Site Supporter
Loyal Site Supporter
UncleVanya's Avatar

Join Date: Jul 2014
Photos: Gallery | Albums
Posts: 14,238
http://us.ricoh-imaging.com/wp-content/uploads/2015/04/1394730000_DA_Rear_co...lity_Chart.pdf
09-18-2016, 08:10 PM   #11
dms
Site Supporter
Site Supporter




Join Date: Aug 2011
Location: New York, NY
Photos: Gallery
Posts: 1,770
Of course it is your list and your criterion--but since a major use of teleconverter is for macro--and that likely the one area it does best in, the need for AF is odd IMO.
09-18-2016, 08:19 PM   #12
Veteran Member
Driline's Avatar

Join Date: Dec 2012
Location: IOWA Where the Tall Corn Grows
Photos: Gallery
Posts: 2,983
The Albinar-ADG Auto 2X has to be T H E worst TC ever. I've got one and it's now used as a door stop. Although come to think of it even as a door stop it fails.

I've got the Tamron-F AF 1.4X Pz-AF MC4 and it works very well with my F*300. And for $100 more than the Albinar (6 bucks) it should.
09-18-2016, 11:01 PM   #13
Loyal Site Supporter
Loyal Site Supporter
pacerr's Avatar

Join Date: Jan 2008
Location: Henry, TN
Photos: Gallery | Albums
Posts: 2,970
QuoteOriginally posted by dms Quote
. . . but since a major use of teleconverter is for macro . . .
Speaking of which, you might add the Vivitar 2X MACRO FOCUSING TELECONVERTER which integrates a helical extension tube with the 2X optical magnification. There are two Pentax types, PK and the PK/A with data pins. Neither provides auto focus function.

(This project reminds me of the '28mm lens 'bestiary' which attempted a similar comprehensive catalog. ) The Great Vivitar 28mm Bestiary - PentaxForums.com
09-19-2016, 12:36 AM   #14
PJ1
Site Supporter
Site Supporter
PJ1's Avatar

Join Date: Jul 2012
Location: Mosquito Creek, Australia
Photos: Gallery | Albums
Posts: 2,240
Sigma APO 2x EX DG ??
09-19-2016, 02:25 AM   #15
Pentaxian
LennyBloke's Avatar

Join Date: Aug 2008
Location: Worcestershire, UK
Photos: Gallery
Posts: 396
I've re-read your list a few times and can't see this one in there...

Pentax Rear Converter-A 2X-L (manual Focus)

...although I'm spectacularly good at missing the obvious
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!
1.4x, 2x, af, auto, converter, da*300, door, drive, focus, k-mount, kenko, layout, lens, lenses, list, pentax, pentax lens, people, post, pz-af, scale, screw, slr lens, teleconverter, teleplus, tube, vivitar
Thread Tools Search this Thread
Search this Thread:

Advanced Search


Similar Threads
Thread Thread Starter Forum Replies Last Post
People ancient man walking through modern world phoenixvision Post Your Photos! 7 08-01-2018 05:11 AM
Crazy world of high-end ball heads... panoguy Pentax Camera and Field Accessories 7 09-01-2013 06:47 PM
Correct Sequence of Teleconverters (Metering With Teleconverters) MMurphy37 Troubleshooting and Beginner Help 19 09-18-2012 05:20 PM
Misc American Exodus: The state of rural America and the modern corporate dust bowl benisona Post Your Photos! 31 02-04-2011 10:52 AM
A View of the Tate Modern paulyrichard Post Your Photos! 13 08-12-2009 12:59 PM



All times are GMT -7. The time now is 01:12 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