sigma 100-400 for k-1 ????????

DeadJohn · 06-03-2019, 08:46 AM

Sigma made it quite clear that Pentax is a dead market for them. No new lenses will be issued in k-mount. My guess is that Pentax camera sales would have to triple in volume before Sigma considers k-mount worth the effort.

Tamron has said similar, but they are a special case because Ricoh and Tamron have partnered on some recent lenses. That contractual agreement may very well restrict Tamron from independently releasing k-mount lenses.

**boriscleto** · 06-03-2019, 09:49 AM

Originally posted by DeadJohn

Sigma made it quite clear that Pentax is a dead market for them. No new lenses will be issued in k-mount. My guess is that Pentax camera sales would have to triple in volume before Sigma considers k-mount worth the effort.

Tamron has said similar, but they are a special case because Ricoh and Tamron have partnered on some recent lenses. That contractual agreement may very well restrict Tamron from independently releasing k-mount lenses.

To be fair, Sigma SA mount is dead too. Sigma has committed to the Panasonic/Leica L mount...at least for the "Art" lenses.

Sunburn · 06-03-2019, 01:12 PM

Couldn't/Wouldn't Sigmas mount conversion service be of use here though? > Mount conversion service - Sigma Imaging (UK) Ltd - just a thought.

DeadJohn · 06-03-2019, 01:49 PM - **1 Like**

Originally posted by Sunburn

Couldn't/Wouldn't Sigmas mount conversion service be of use here though? > Mount conversion service - Sigma Imaging (UK) Ltd - just a thought.

That service is only available between mounts that are already manufactured in a specific lens model. For example, let's say Sigma comes out with a new 50mm macro. They list it for Canon and Sony mounts, for some reason they decide not to sell it for Nikon. You couldn't use that service to slap on a Nikon mount.

It's disappointing that I can't get new Sigma lenses for my Pentax, but it's understandable. They've never tested the lens for firmware compatibility, mirror box clearance, aperture coupling, etc.

**boriscleto** · 06-03-2019, 03:02 PM

Sigma has completely abandoned Pentax, so I don't think the mount conversion service is even available for K-mount anymore. I've heard they won't flash the ROM of a K-mount lens, is the K-1 scratch fix even available anymore?

rawr · 06-07-2019, 05:03 AM

Originally posted by boriscleto

Sigma has completely abandoned Pentax

Not true - zooms like the 17-70, 18-35, 18-250, 18-300, and even the 70-300 are still there, even on the Sigma USA site. As are primes like the 35 f1.4.

I'd personally like to see the 120-300 f2.8 DG HSM show up in K-mount one day, but I'm pretty sure that's never going to happen.

MegamanAT · 06-07-2019, 09:59 PM

Originally posted by rawr

Not true - zooms like the 17-70, 18-35, 18-250, 18-300, and even the 70-300 are still there, even on the Sigma USA site. As are primes like the 35 f1.4.

I'd personally like to see the 120-300 f2.8 DG HSM show up in K-mount one day, but I'm pretty sure that's never going to happen.

It is true. They are all dated. The last one newly released for Pentax was back in 2014. In the meantime, about 75 new ones have been released for Canon/Nikon and now also for Sony instead of Pentax. Almost the complete Art/Contemporary/Sports range is missing.

**clackers** · 06-08-2019, 12:51 AM

I suspect they're not even manufacturing those lenses anymore, they're just sitting on shelves, running them down in inventory.

angerdan · 06-09-2019, 01:29 PM - **1 Like**

Originally posted by mrfredsporty

well, guys and gals, im hearing great things for the new sigma 100-400.

im hoping my pentax gurus have a way around it and that there might really be and adapter of some sort.

Originally posted by mrfredsporty

if anyone could figure a way around it it would be you all.

that is the one frustrating thing about k1 and k3; the limited sigma et al lenses.the camera is great, however

What Pentax lenses do you miss?
How many copies of the D FA 150-450mm do you already own?
HD Pentax-D FA 150-450mm F4.5-5.6 Review - Introduction | PentaxForums.com Reviews

And what about the many advantages of Pentax glass against third-party lenses (WR/AW sealing, in-camera lens correction profiles, QuickShift...)

Landscape_with_K1 · 12-15-2019, 02:40 PM

This discussion appears to have drifted slightly from the original posting.. My 2 cents anyway. I have come to like Sigma's bright wide angle lenses (I have the 20mm and the 28mm, both at f/1.8 or f/1.7) as well as the longer primes and zooms. Losing Sigma's support for K mount was a big loss. There is probably no way to reverse this.

rawr · 12-15-2019, 05:51 PM

With all this gloom-and-doom about Sigma and Pentax, it's worth noting that companies like SamYang Optics, with it's 26 K-mount lenses, and other lens makers like Irix, Laowa too, are able to fill some of the K-mount gaps left by Sigma.

SirTomster · 12-23-2019, 01:23 PM - **1 Like**

While you cannot get the latest lenses in K Mount there are still plenty of older generation ones that do decently.

All the below images were taken with the Sigma 150-500mm F5-6.3 APO DG OS HSM

**barondla** · 12-23-2019, 11:38 PM

Originally posted by SirTomster

While you cannot get the latest lenses in K Mount there are still plenty of older generation ones that do decently.

All the below images were taken with the Sigma 150-500mm F5-6.3 APO DG OS HSM

Super images! Sharp and contrasty.
Thanks for sharing,
barondla

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06-03-2019, 08:46 AM	#16
DeadJohn Pentaxian Join Date: Jan 2011 Location: New York Posts: 4,834	Sigma made it quite clear that Pentax is a dead market for them. No new lenses will be issued in k-mount. My guess is that Pentax camera sales would have to triple in volume before Sigma considers k-mount worth the effort. Tamron has said similar, but they are a special case because Ricoh and Tamron have partnered on some recent lenses. That contractual agreement may very well restrict Tamron from independently releasing k-mount lenses.

06-03-2019, 09:49 AM	#17
boriscleto Loyal Site Supporter Join Date: Dec 2009 Location: North Syracuse, NY Photos: Gallery Posts: 16,475	Originally posted by DeadJohn Sigma made it quite clear that Pentax is a dead market for them. No new lenses will be issued in k-mount. My guess is that Pentax camera sales would have to triple in volume before Sigma considers k-mount worth the effort. Tamron has said similar, but they are a special case because Ricoh and Tamron have partnered on some recent lenses. That contractual agreement may very well restrict Tamron from independently releasing k-mount lenses. To be fair, Sigma SA mount is dead too. Sigma has committed to the Panasonic/Leica L mount...at least for the "Art" lenses.

06-03-2019, 01:12 PM	#18
Sunburn Senior Member Join Date: Dec 2016 Location: UK Posts: 233	Couldn't/Wouldn't Sigmas mount conversion service be of use here though? > Mount conversion service - Sigma Imaging (UK) Ltd - just a thought.

06-03-2019, 01:49 PM - 1 Like	#19
DeadJohn Pentaxian Join Date: Jan 2011 Location: New York Posts: 4,834	Originally posted by Sunburn Couldn't/Wouldn't Sigmas mount conversion service be of use here though? > Mount conversion service - Sigma Imaging (UK) Ltd - just a thought. That service is only available between mounts that are already manufactured in a specific lens model. For example, let's say Sigma comes out with a new 50mm macro. They list it for Canon and Sony mounts, for some reason they decide not to sell it for Nikon. You couldn't use that service to slap on a Nikon mount. It's disappointing that I can't get new Sigma lenses for my Pentax, but it's understandable. They've never tested the lens for firmware compatibility, mirror box clearance, aperture coupling, etc.

06-03-2019, 03:02 PM	#20
boriscleto Loyal Site Supporter Join Date: Dec 2009 Location: North Syracuse, NY Photos: Gallery Posts: 16,475	Sigma has completely abandoned Pentax, so I don't think the mount conversion service is even available for K-mount anymore. I've heard they won't flash the ROM of a K-mount lens, is the K-1 scratch fix even available anymore?

06-07-2019, 05:03 AM	#21
rawr Veteran Member Join Date: Jun 2009 Posts: 11,913	Originally posted by boriscleto Sigma has completely abandoned Pentax Not true - zooms like the 17-70, 18-35, 18-250, 18-300, and even the 70-300 are still there, even on the Sigma USA site. As are primes like the 35 f1.4. I'd personally like to see the 120-300 f2.8 DG HSM show up in K-mount one day, but I'm pretty sure that's never going to happen.

06-07-2019, 09:59 PM	#22
MegamanAT New Member Join Date: May 2019 Posts: 26	Originally posted by rawr Not true - zooms like the 17-70, 18-35, 18-250, 18-300, and even the 70-300 are still there, even on the Sigma USA site. As are primes like the 35 f1.4. I'd personally like to see the 120-300 f2.8 DG HSM show up in K-mount one day, but I'm pretty sure that's never going to happen. It is true. They are all dated. The last one newly released for Pentax was back in 2014. In the meantime, about 75 new ones have been released for Canon/Nikon and now also for Sony instead of Pentax. Almost the complete Art/Contemporary/Sports range is missing.

06-08-2019, 12:51 AM	#23
clackers Otis Memorial Pentaxian Join Date: Jul 2013 Location: Melbourne Photos: Albums Posts: 16,397	I suspect they're not even manufacturing those lenses anymore, they're just sitting on shelves, running them down in inventory.

06-09-2019, 01:29 PM - 1 Like	#24
angerdan Pentaxian Join Date: Feb 2015 Photos: Gallery \| Albums Posts: 2,642	Originally posted by mrfredsporty well, guys and gals, im hearing great things for the new sigma 100-400. im hoping my pentax gurus have a way around it and that there might really be and adapter of some sort. Originally posted by mrfredsporty if anyone could figure a way around it it would be you all. that is the one frustrating thing about k1 and k3; the limited sigma et al lenses.the camera is great, however What Pentax lenses do you miss? How many copies of the D FA 150-450mm do you already own? HD Pentax-D FA 150-450mm F4.5-5.6 Review - Introduction \| PentaxForums.com Reviews And what about the many advantages of Pentax glass against third-party lenses (WR/AW sealing, in-camera lens correction profiles, QuickShift...)

12-15-2019, 02:40 PM	#25
Landscape_with_K1 Junior Member Join Date: Jan 2018 Photos: Gallery Posts: 47	This discussion appears to have drifted slightly from the original posting.. My 2 cents anyway. I have come to like Sigma's bright wide angle lenses (I have the 20mm and the 28mm, both at f/1.8 or f/1.7) as well as the longer primes and zooms. Losing Sigma's support for K mount was a big loss. There is probably no way to reverse this.

12-15-2019, 05:51 PM	#26
rawr Veteran Member Join Date: Jun 2009 Posts: 11,913	With all this gloom-and-doom about Sigma and Pentax, it's worth noting that companies like SamYang Optics, with it's 26 K-mount lenses, and other lens makers like Irix, Laowa too, are able to fill some of the K-mount gaps left by Sigma.

12-23-2019, 01:23 PM - 1 Like	#27
SirTomster Veteran Member Join Date: Mar 2014 Posts: 416	While you cannot get the latest lenses in K Mount there are still plenty of older generation ones that do decently. All the below images were taken with the Sigma 150-500mm F5-6.3 APO DG OS HSM

12-23-2019, 11:38 PM	#28
barondla Site Supporter Join Date: Sep 2006 Location: midwest, United States Photos: Gallery \| Albums Posts: 5,715	Originally posted by SirTomster While you cannot get the latest lenses in K Mount there are still plenty of older generation ones that do decently. All the below images were taken with the Sigma 150-500mm F5-6.3 APO DG OS HSM Super images! Sharp and contrasty. Thanks for sharing, barondla