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09-25-2014, 06:55 AM   #61
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QuoteOriginally posted by thibs Quote
What about a Pentax/ricoh patent on that btw, Falk?
I guess they have their floating sensor drive patented. And the additional applications it allows, rotation (horizon control), astro tracking, AA simulation etc. But I didn't check. The electromagnetic drive with hall sensor feedback loop is a patent, I've read it.

09-25-2014, 07:29 AM   #62
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Right. Thanks.
It was said (and I'm careful, really, that's why I used 'said') that years ago, Pentax actually had patents related to in lens stabilization although they never produced it.
I never found a thing and I believe this is nothing but thin air but I'm still curious.
09-25-2014, 07:33 AM   #63
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QuoteOriginally posted by thibs Quote
Right. Thanks.
It was said (and I'm careful, really, that's why I used 'said') that years ago, Pentax actually had patents related to in lens stabilization although they never produced it.
I never found a thing and I believe this is nothing but thin air but I'm still curious.
they do/did, see the latest 645 lenses
09-25-2014, 08:02 AM   #64
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They don't need a patent to produce a lens; of course it's likely that they have a patent if they produce some new technology.

09-25-2014, 08:05 AM   #65
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QuoteOriginally posted by ElJamoquio Quote
They don't need a patent to produce a lens; of course it's likely that they have a patent if they produce some new technology.
Or at least a patent licence from somebody else.
09-25-2014, 12:31 PM   #66
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QuoteOriginally posted by Franc Quote
they do/did, see the latest 645 lenses
$Sure but those rumours were about the FA line, which supposedly was, at first, destined to be both stabilized and WRed.
Well, that's what was said.
11-25-2016, 05:33 PM   #67
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Hi, folks. Bumping this old thread for a reason. I was in my fave Pentax dealer in town today talking to the camera department manager. He mentioned that because of the new KAF4 mount, Sigma was going to be releasing a K mount version of their 150-600 zoom "soon". Take it for what it is worth.

Last edited by jbinpg; 11-25-2016 at 09:01 PM.
11-25-2016, 06:46 PM   #68
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That could explain the firmware update for the K3

11-25-2016, 07:10 PM   #69
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QuoteOriginally posted by jbinpg Quote
Hi, folks. Bumping this old thread for a reason. I was in my fave Pentax dealer in town today talking to the camera department manager. He mentioned that because of the new KAF4 mount, Sigma was going to be teleasing a K mount version of their 150-600 zoom "soon". Take it for what it is worth.
That would be fantabulous if true.
11-25-2016, 07:16 PM   #70
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QuoteOriginally posted by jbinpg Quote
Hi, folks. Bumping this old thread for a reason. I was in my fave Pentax dealer in town today talking to the camera department manager. He mentioned that because of the new KAF4 mount, Sigma was going to be teleasing a K mount version of their 150-600 zoom "soon". Take it for what it is worth.
But will the 150-600 work with the 1.4 TC?
11-25-2016, 10:02 PM   #71
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Why not?
As far as electric connectivity's hardstuff is concerned, K-AF4 didn't change the game.

Last edited by Zygonyx; 11-25-2016 at 10:47 PM.
11-25-2016, 11:29 PM   #72
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QuoteOriginally posted by jbinpg Quote
Hi, folks. Bumping this old thread for a reason. I was in my fave Pentax dealer in town today talking to the camera department manager. He mentioned that because of the new KAF4 mount, Sigma was going to be releasing a K mount version of their 150-600 zoom "soon". Take it for what it is worth.
I still hope they'll make it in the KAF3 mount. I'd like to have one and use it on my K-5II.
11-26-2016, 01:03 AM   #73
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QuoteOriginally posted by jbinpg Quote
Hi, folks. Bumping this old thread for a reason. I was in my fave Pentax dealer in town today talking to the camera department manager. He mentioned that because of the new KAF4 mount, Sigma was going to be releasing a K mount version of their 150-600 zoom "soon". Take it for what it is worth.
Same low reliability rumors (that is not critisizing you) were circulated by some German dealers three weeks ago.

Sigmas lens sales probably took just the same nose dive as Nikon's and Canon's.
Sigma simply can not afford their old arrogance any longer. They need every potential buyer they can get.
What do you think why every small beginner lens company is offering their lenses in K mount / KAF3? Because it is not feasible?

So even while the sources are not really good ones, expecting more consumer lenses (those with the broadest appeal to soccer moms) from third parties makes sense. Don't expect primes. Mommy wants to zoom.
The Sigma 24-105 was mentioned to be "evaluated" as well btw.
11-26-2016, 01:15 AM   #74
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QuoteOriginally posted by normhead Quote
But will the 150-600 work with the 1.4 TC?
That would maybe be a problem. The result is 1.4 x 6.3 = f8.8 So maybe there will be no auto focus in the camera working.
11-26-2016, 01:18 AM   #75
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As today's Canikon TC's don't work with such a zoom ... and don't either with Bigma
Please stop BS
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