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koper · 09-22-2008, 09:58 AM

Press Release:

PENTAX to Showcase Model Products at Photokina 2008
September 22, 2008 - PENTAX U.K. is pleased to exhibit another interchangeable lens and a rear converter at Photokina 2008. Both items are currently under development for use with PENTAX digital SLR cameras.

Digital-SLR-exclusive accessory
Product name (tentative): smc PENTAX-DA 1.4X REAR CONVERTER SDM

First rear converter equipped for autofocus operation of PENTAX digital SLR cameras
SDM mechanism for extra-smooth, super-quiet autofocus operation
Compatible with conventional (mechanical) autofocus system
Marketing date to be announced

Pentax announces ultra-wide angle lens & Teleconverter: Digital Photography Review

gokenin · 09-22-2008, 11:56 AM

ok this has me confused will this converter allow you to use screwdrive lens on a camera that will be designed for only sdm drives or does it mean that you can sdm lens in the old screwdriver camera? or am i just totally confused?

Denis · 09-22-2008, 12:23 PM

Originally posted by gokenin

ok this has me confused will this converter allow you to use screwdrive lens on a camera that will be designed for only sdm drives or does it mean that you can sdm lens in the old screwdriver camera? or am i just totally confused?

I believe they will use the same design as the 1.4x but add the contacts inside so it can drive the SDM type lenses. It will still drive via screw all AF lenses without SDM. I am speculating but that would be a simple solution.

koper · 09-22-2008, 12:53 PM

this teleconvertor will work with old and new lenses
there is no need to bay tamron teleconverter!!!!!!!!!!!!!!!

Denis · 09-22-2008, 01:39 PM

Originally posted by koper

this teleconvertor will work with old and new lenses
there is no need to bay tamron teleconverter!!!!!!!!!!!!!!!

The only issue is when and how much. If you can wait and afford the higher price than it is not an issue. As of now it is difficult to find a Kenko 1.5x or Tamron 1.4x as they are out of production according to my web search. I managed to find a used Kenko 1.4x PZ-AF, awaiting delivery. I hope the IQ will be satifactory.

As for Pentax, who knows when this new teleconverter will be available as stated to be still in the design process. I would expect the price to be in the 250 to 300 usd range.

Any rumors are welcome.

séamuis · 09-22-2008, 01:47 PM

Quote:

I would expect the price to be in the 250 to 300 usd range.

I think this product would be worth every penny of 300 USD, to have proper smc glass elements and SDM and screw drive compatibility.

Miserere · 09-22-2008, 01:51 PM

My guess is $300.

It will work with both screw and SDM lenses (if your body is SDM capable).

The big question here is this: Will it electronically multiply the focal length it transmits by 1.4? If it doesn't, then I see no reason to let go of my Tamron TC.

Last edited by Miserere; 09-22-2008 at 03:26 PM.

roentarre · 09-22-2008, 02:11 PM

Originally posted by Denis

I believe they will use the same design as the 1.4x but add the contacts inside so it can drive the SDM type lenses. It will still drive via screw all AF lenses without SDM. I am speculating but that would be a simple solution.

Good interpretation. I think it is very likely the way you have described it.

rei_vilo · 06-19-2009, 01:57 AM

Any news about the SDM rear converter ?

wwwmorrell · 06-19-2009, 04:03 AM

Originally posted by rei_vilo

Any news about the SDM rear converter ?

I would'nt get your hopes up to high :ugh: :ugh: it has disappeared from the lens roadmap.

dmort · 08-17-2011, 06:47 AM

This never happened did it? Will it ever happen?

Blue · 08-17-2011, 07:32 AM

Originally posted by dmort

This never happened did it? Will it ever happen?

No it did not. I wish I could get my hands on that prototype.

Parallax · 08-17-2011, 07:33 AM

Why are we resurrecting a 3 year old thread?

CLOSED

09-22-2008, 09:58 AM	#1
koper Senior Member Join Date: Jul 2008 Location: israel Photos: Gallery Posts: 180	smc PENTAX-DA 1.4X REAR CONVERTER SDM Press Release: PENTAX to Showcase Model Products at Photokina 2008 September 22, 2008 - PENTAX U.K. is pleased to exhibit another interchangeable lens and a rear converter at Photokina 2008. Both items are currently under development for use with PENTAX digital SLR cameras. Digital-SLR-exclusive accessory Product name (tentative): smc PENTAX-DA 1.4X REAR CONVERTER SDM First rear converter equipped for autofocus operation of PENTAX digital SLR cameras SDM mechanism for extra-smooth, super-quiet autofocus operation Compatible with conventional (mechanical) autofocus system Marketing date to be announced Pentax announces ultra-wide angle lens & Teleconverter: Digital Photography Review

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09-22-2008, 11:56 AM	#2
gokenin Veteran Member Join Date: Oct 2007 Location: lowell,ma Posts: 1,899	ok this has me confused will this converter allow you to use screwdrive lens on a camera that will be designed for only sdm drives or does it mean that you can sdm lens in the old screwdriver camera? or am i just totally confused?

09-22-2008, 12:23 PM	#3
Denis Veteran Member Join Date: Jan 2007 Location: St-Albert, Alberta, Canada Posts: 330	Originally posted by gokenin ok this has me confused will this converter allow you to use screwdrive lens on a camera that will be designed for only sdm drives or does it mean that you can sdm lens in the old screwdriver camera? or am i just totally confused? I believe they will use the same design as the 1.4x but add the contacts inside so it can drive the SDM type lenses. It will still drive via screw all AF lenses without SDM. I am speculating but that would be a simple solution.

09-22-2008, 12:53 PM	#4
koper Senior Member Join Date: Jul 2008 Location: israel Photos: Gallery Posts: 180 Original Poster	this teleconvertor will work with old and new lenses there is no need to bay tamron teleconverter!!!!!!!!!!!!!!!

09-22-2008, 01:39 PM	#5
Denis Veteran Member Join Date: Jan 2007 Location: St-Albert, Alberta, Canada Posts: 330	Originally posted by koper this teleconvertor will work with old and new lenses there is no need to bay tamron teleconverter!!!!!!!!!!!!!!! The only issue is when and how much. If you can wait and afford the higher price than it is not an issue. As of now it is difficult to find a Kenko 1.5x or Tamron 1.4x as they are out of production according to my web search. I managed to find a used Kenko 1.4x PZ-AF, awaiting delivery. I hope the IQ will be satifactory. As for Pentax, who knows when this new teleconverter will be available as stated to be still in the design process. I would expect the price to be in the 250 to 300 usd range. Any rumors are welcome.

09-22-2008, 01:47 PM	#6
séamuis Banned Join Date: Oct 2007 Location: Savannah, U.S./Baguio City, P.H. Posts: 5,979	Quote: I would expect the price to be in the 250 to 300 usd range. I think this product would be worth every penny of 300 USD, to have proper smc glass elements and SDM and screw drive compatibility.

09-22-2008, 01:51 PM	#7
Miserere Veteran Member Join Date: Sep 2007 Location: Boston Photos: Gallery Posts: 1,993	My guess is $300. It will work with both screw and SDM lenses (if your body is SDM capable). The big question here is this: Will it electronically multiply the focal length it transmits by 1.4? If it doesn't, then I see no reason to let go of my Tamron TC. Last edited by Miserere; 09-22-2008 at 03:26 PM.

09-22-2008, 02:11 PM	#8
roentarre Veteran Member Join Date: Oct 2006 Location: Melbourne, Australia Posts: 11,783	Originally posted by Denis I believe they will use the same design as the 1.4x but add the contacts inside so it can drive the SDM type lenses. It will still drive via screw all AF lenses without SDM. I am speculating but that would be a simple solution. Good interpretation. I think it is very likely the way you have described it.

06-19-2009, 01:57 AM	#9
rei_vilo Forum Member Join Date: Jun 2007 Location: Paris, France Posts: 50	Any news about the SDM rear converter ?

06-19-2009, 04:03 AM	#10
wwwmorrell Veteran Member Join Date: Jan 2007 Location: Mount Buller, Australia Posts: 397	Originally posted by rei_vilo Any news about the SDM rear converter ? I would'nt get your hopes up to high :ugh: :ugh: it has disappeared from the lens roadmap.

08-17-2011, 06:47 AM	#11
dmort Veteran Member Join Date: Apr 2011 Location: Bronx, NY Photos: Gallery \| Albums Posts: 415	This never happened did it? Will it ever happen?

08-17-2011, 07:32 AM	#12
Blue Moderator Site Supporter Join Date: Jun 2008 Location: Florida Hill Country Photos: Gallery \| Albums Posts: 17,377	Originally posted by dmort This never happened did it? Will it ever happen? No it did not. I wish I could get my hands on that prototype.

08-17-2011, 07:33 AM	#13
Parallax Senior Moderator Loyal Site Supporter Join Date: Apr 2008 Location: South Dakota Photos: Gallery Posts: 19,333	Why are we resurrecting a 3 year old thread? CLOSED