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09-22-2008, 09:58 AM   #1
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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

09-22-2008, 11:56 AM   #2
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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
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QuoteOriginally posted by gokenin Quote
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
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this teleconvertor will work with old and new lenses
there is no need to bay tamron teleconverter!!!!!!!!!!!!!!!

09-22-2008, 01:39 PM   #5
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QuoteOriginally posted by koper Quote
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
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QuoteQuote:
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
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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
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QuoteOriginally posted by Denis Quote
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
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Any news about the SDM rear converter ?
06-19-2009, 04:03 AM   #10
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QuoteOriginally posted by rei_vilo Quote
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
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This never happened did it? Will it ever happen?
08-17-2011, 07:32 AM   #12
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QuoteOriginally posted by dmort Quote
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
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Why are we resurrecting a 3 year old thread?

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