Teleconverter Question

shuttles12000 · 08-05-2018, 12:23 AM

Does any one know if the Pentax 1.4TC works with the Sigma 70-200. F2.8 OS HSM EX lens (latest and final model)?
I’ve been eyeing one off for a while, but I can’t seem to find if they are compatible

Adam · 08-05-2018, 01:00 AM

They should work together just fine, though the image circle may only cover APS-C.

**Crooski** · 08-05-2018, 11:38 AM

Hello shuttles12000

I have the SIGMA 70-200 mm 2.8 HSM II with modified mount for the K1 and the latest firmware installed by SIGMA.

And it does not work with the Pentax DA 1.4x AW converter!

shuttles12000 · 08-24-2018, 04:34 AM

So, one of you says yes, and the other says a definite maybe, but unlikely?!?!

**Crooski** · 08-25-2018, 08:08 AM

I have tested it and it does NOT work with K1 and KP

regards Crooski

shuttles12000 · 10-17-2018, 02:59 AM

Originally posted by Crooski

I have tested it and it does NOT work with K1 and KP

regards Crooski

Thanks Crooski!

**Crooski** · 10-17-2018, 09:39 AM

You're welcome

normhead · 10-17-2018, 10:07 AM

Sigma does make a matched TC for it do they not?

kypfer · 10-17-2018, 03:10 PM

Originally posted by normhead

Sigma does make a matched TC for it do they not?

Unfortunately Sigma, like Tamron, appear to have ceased support for the Pentax mount

**felixkh** · 10-23-2018, 11:07 PM

Look for older model Sigma teleconverter, 1.4x APO EX. That should work with the Sigma 70-200/2.8.

08-05-2018, 12:23 AM	#1
shuttles12000 Forum Member Join Date: Feb 2012 Location: Hobart TAS Posts: 87	Teleconverter Question Does any one know if the Pentax 1.4TC works with the Sigma 70-200. F2.8 OS HSM EX lens (latest and final model)? I’ve been eyeing one off for a while, but I can’t seem to find if they are compatible

08-05-2018, 01:00 AM	#2
Adam Administrator Site Webmaster Join Date: Sep 2006 Location: Arizona Photos: Gallery \| Albums Posts: 51,593	They should work together just fine, though the image circle may only cover APS-C. Adam PentaxForums.com Webmaster (Site Usage Guide \| Site Help \| My Photography) PentaxForums.com server and development costs are user-supported. You can help cover these costs by donating or purchasing one of our Pentax eBooks. Or, buy your photo gear from our affiliates, Adorama, B&H Photo, KEH, or Topaz Labs, and get FREE Marketplace access - click here to see how! Trusted Pentax retailers:

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Question does Pentax HD DA 1.4 Teleconverter send lens information to camera...	mapguy	Pentax SLR Lens Discussion	2	03-03-2018 12:16 PM
1.4x teleconverter question	radman	Pentax SLR Lens Discussion	6	02-24-2016 08:22 PM
Kenko 3X Teleconverter for Minolta Mount question	Michael Piziak	Pentax SLR Lens Discussion	9	02-03-2015 10:47 AM
Difference.. Auto Teleconverter/Teleconverter?	peter oconnor	Pentax SLR Lens Discussion	6	04-28-2013 03:11 PM
Teleconverter question	scott-devon	Pentax SLR Lens Discussion	3	11-17-2006 06:19 PM

08-05-2018, 11:38 AM	#3
Crooski Loyal Site Supporter Join Date: Feb 2013 Location: Rozenburg , Zuid-Holland Photos: Gallery Posts: 3,672	Hello shuttles12000 I have the SIGMA 70-200 mm 2.8 HSM II with modified mount for the K1 and the latest firmware installed by SIGMA. And it does not work with the Pentax DA 1.4x AW converter!

08-24-2018, 04:34 AM	#4
shuttles12000 Forum Member Join Date: Feb 2012 Location: Hobart TAS Posts: 87 Original Poster	So, one of you says yes, and the other says a definite maybe, but unlikely?!?!

08-25-2018, 08:08 AM	#5
Crooski Loyal Site Supporter Join Date: Feb 2013 Location: Rozenburg , Zuid-Holland Photos: Gallery Posts: 3,672	I have tested it and it does NOT work with K1 and KP regards Crooski

10-17-2018, 02:59 AM	#6
shuttles12000 Forum Member Join Date: Feb 2012 Location: Hobart TAS Posts: 87 Original Poster	Originally posted by Crooski I have tested it and it does NOT work with K1 and KP regards Crooski Thanks Crooski!

10-17-2018, 09:39 AM	#7
Crooski Loyal Site Supporter Join Date: Feb 2013 Location: Rozenburg , Zuid-Holland Photos: Gallery Posts: 3,672	You're welcome

10-17-2018, 10:07 AM	#8
normhead Pentaxian Join Date: Jun 2007 Location: Near Algonquin Park Photos: Gallery \| Albums Posts: 40,448	Sigma does make a matched TC for it do they not?

10-17-2018, 03:10 PM	#9
kypfer Pentaxian Join Date: Jan 2018 Location: Jersey C.I. Posts: 3,588	Originally posted by normhead Sigma does make a matched TC for it do they not? Unfortunately Sigma, like Tamron, appear to have ceased support for the Pentax mount

10-23-2018, 11:07 PM	#10
felixkh Site Supporter Join Date: Nov 2008 Location: Singapore Photos: Gallery Posts: 1,201	Look for older model Sigma teleconverter, 1.4x APO EX. That should work with the Sigma 70-200/2.8.

Thread Tools	Search this Thread
	Search this Thread: Advanced Search