Again, Sigma 105mm f1.4 lens not in K-mount

LFLee · 02-26-2018, 12:43 PM

Couple weeks ago, Sigma new 14-24 f2.8 will not be available in K-mount.

Now the new 105mm f1.4 lens not in K-mount, again!

**jatrax** · 02-26-2018, 12:46 PM - **1 Like**

Sigma has repeatedly stated they have no plans to support k-mount going forward. So why the surprise? Or even concern, is this a lens you need for your work?

**BigMackCam** · 02-26-2018, 12:52 PM

Moved to Photographic Industry forum...

**pepperberry farm** · 02-26-2018, 12:57 PM

not sure how this is news, when Sigma has consistently squashed any rumors that they will be making any new K-mount lenses...

**BigMackCam** · 02-26-2018, 01:01 PM

Originally posted by pepperberry farm

not sure how this is news, when Sigma has consistently squashed any rumors that they will be making any new K-mount lenses...

That's why it's been moved

robjmitchell · 02-26-2018, 01:15 PM

Sigma will make lenses in K-mount when the money to be made is greater than producing another product. Based on the specialist nature of this lens and the 14-28/2.8 that lacks stabilisation and is more expensive than the tamron 15-30, they may be closing in on the bottom of the barrel. The FF market is still a lot smaller than aps-c even the its not shrinking in the same way.

biz-engineer · 02-26-2018, 01:45 PM

Originally posted by LFLee

Again, Sigma 105mm f1.4 lens not in K-mount Couple weeks ago, Sigma new 14-24 f2.8 will not be available in K-mount. Now the new 105mm f1.4 lens not in K-mount, again!

Get yourself a canon and this lens, then be happy.

**jatrax** · 02-26-2018, 02:12 PM

I think in some situations if a particular lens is absolutely needed then it makes sense to buy the lens and then buy the camera that fits on it. Whether we like it or not not every lens ever made is going to be available for Pentax. It is a small brand and cannot be everything to everybody.

If I needed a 600mm f/4 (badly enough) I would buy it and then get a Nikon or Canon to hang on the back of it. Same with a lot of other specialized lenses.

Adam · 02-26-2018, 02:59 PM

Originally posted by LFLee

Couple weeks ago, Sigma new 14-24 f2.8 will not be available in K-mount.

Now the new 105mm f1.4 lens not in K-mount, again!

This is the norm, not the exception.

Sandy Hancock · 02-26-2018, 03:06 PM

Do Leica owners complain about the lack of third party lenses?

D1N0 · 02-26-2018, 04:16 PM

Originally posted by LFLee

Couple weeks ago, Sigma new 14-24 f2.8 will not be available in K-mount.

Now the new 105mm f1.4 lens not in K-mount, again!

It's because nobody likes Pentaxians because we cannot take a hint

. Become a Sony shooter and you will be Sigma's best friend. Sony isn't doomed. It is so easy. Just switch.

DeadJohn · 02-26-2018, 04:46 PM

@LFLee, Sigma has openly stated they do not plan to release new k-mount lenses. It's been that way for several years. If you need specific Sigma lenses, change camera brands to something they support. The same can be said for Tamron lenses - no more k-mount.

Originally posted by cmohr

Sigma can't just make lenses in K-mount, it's done under licence to use the K-mount.

Is there any evidence for that? Sigma and Tamron may have both reverse-engineered the mount without paying Pentax/Ricoh. It's been discussed before and I don't remember seeing proof one way or the other.

**clackers** · 02-26-2018, 04:52 PM - **3 Likes**

Not enough Pentaxians ever bought the Sigma 18-35mm Art or the Sigma 35mm Art.

People insist we need their lenses, actual sales said this was never true.

vonBaloney · 02-26-2018, 05:18 PM

I always thought they just reverse engineered it. Certainly that was true in the past (for most if not all third-party makers) when the electronics were simpler (or there were none). If they did it under license, I would expect the lenses they have produced to be completely compatible, but there have always been weird situations and glitches, firmware updates, etc where they haven't always worked as expected -- which I chalk up to the fact that they had to figure out any oddities themselves or play catch-up with any changes Pentax made.

**clackers** · 02-26-2018, 05:48 PM

Originally posted by cmohr

I think it is both a Sigma and a Pentax thing. Sigma can't just make lenses in K-mount, it's done under licence to use the K-mount. They also , started dropping certain lenses in K-mount because of the screwdrive AF, they didn't just have to do a Nikon or Canon mount, they had to incorporate the screwdrive into the K-mount,. That should now not be an issue due to the SDM in Pentax current lenses. Sigma would sell many many lenses to Pentax owners if they did support the mount, but Pentax would loose a lot of lens sales in the process, and I cant see Pentax being happy to let someone else reap the profits, but, if they are not letting the licence for K-mount, they should be offering those lenses. But they are not.

Double edged sword.

Canon and Nikon don't license lenses, AFAIK. It's all reverse engineered.

02-26-2018, 12:43 PM	#1
LFLee Veteran Member Join Date: Aug 2009 Location: Southern California Photos: Gallery \| Albums Posts: 2,292	Again, Sigma 105mm f1.4 lens not in K-mount Couple weeks ago, Sigma new 14-24 f2.8 will not be available in K-mount. Now the new 105mm f1.4 lens not in K-mount, again!

02-26-2018, 02:59 PM	#9
Adam Administrator Site Webmaster Join Date: Sep 2006 Location: Arizona Photos: Gallery \| Albums Posts: 51,595	Originally posted by LFLee Couple weeks ago, Sigma new 14-24 f2.8 will not be available in K-mount. Now the new 105mm f1.4 lens not in K-mount, again! This is the norm, not the exception. 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:

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02-26-2018, 12:46 PM - 1 Like	#2
jatrax Site Supporter Join Date: May 2010 Location: Washington Cascades Photos: Gallery \| Albums Posts: 12,991	Sigma has repeatedly stated they have no plans to support k-mount going forward. So why the surprise? Or even concern, is this a lens you need for your work?

02-26-2018, 12:52 PM	#3
BigMackCam Digitiser of Film Join Date: Mar 2010 Location: North East of England Posts: 20,673	Moved to Photographic Industry forum...

02-26-2018, 12:57 PM	#4
pepperberry farm amateur dirt farmer Join Date: Dec 2014 Location: probably out in a field somewhere... Photos: Gallery \| Albums Posts: 41,678	not sure how this is news, when Sigma has consistently squashed any rumors that they will be making any new K-mount lenses...

02-26-2018, 01:01 PM	#5
BigMackCam Digitiser of Film Join Date: Mar 2010 Location: North East of England Posts: 20,673	Originally posted by pepperberry farm not sure how this is news, when Sigma has consistently squashed any rumors that they will be making any new K-mount lenses... That's why it's been moved

02-26-2018, 01:15 PM	#6
robjmitchell Veteran Member Join Date: Oct 2007 Location: Melbourne Aus Posts: 1,776	Sigma will make lenses in K-mount when the money to be made is greater than producing another product. Based on the specialist nature of this lens and the 14-28/2.8 that lacks stabilisation and is more expensive than the tamron 15-30, they may be closing in on the bottom of the barrel. The FF market is still a lot smaller than aps-c even the its not shrinking in the same way.

02-26-2018, 01:45 PM	#7
biz-engineer Pentaxian Join Date: Feb 2015 Photos: Gallery Posts: 12,232	Originally posted by LFLee Again, Sigma 105mm f1.4 lens not in K-mount Couple weeks ago, Sigma new 14-24 f2.8 will not be available in K-mount. Now the new 105mm f1.4 lens not in K-mount, again! Get yourself a canon and this lens, then be happy.

02-26-2018, 02:12 PM	#8
jatrax Site Supporter Join Date: May 2010 Location: Washington Cascades Photos: Gallery \| Albums Posts: 12,991	I think in some situations if a particular lens is absolutely needed then it makes sense to buy the lens and then buy the camera that fits on it. Whether we like it or not not every lens ever made is going to be available for Pentax. It is a small brand and cannot be everything to everybody. If I needed a 600mm f/4 (badly enough) I would buy it and then get a Nikon or Canon to hang on the back of it. Same with a lot of other specialized lenses.

02-26-2018, 03:06 PM	#10
Sandy Hancock Moderator Site Supporter Join Date: Feb 2012 Location: Adelaide Hills, South Australia Photos: Gallery \| Albums Posts: 11,272	Do Leica owners complain about the lack of third party lenses?

02-26-2018, 04:16 PM	#11
D1N0 Pentaxian Join Date: May 2012 Location: --- Photos: Gallery Posts: 6,802	Originally posted by LFLee Couple weeks ago, Sigma new 14-24 f2.8 will not be available in K-mount. Now the new 105mm f1.4 lens not in K-mount, again! It's because nobody likes Pentaxians because we cannot take a hint . Become a Sony shooter and you will be Sigma's best friend. Sony isn't doomed. It is so easy. Just switch.

02-26-2018, 04:46 PM	#12
DeadJohn Pentaxian Join Date: Jan 2011 Location: New York Posts: 4,834	@LFLee, Sigma has openly stated they do not plan to release new k-mount lenses. It's been that way for several years. If you need specific Sigma lenses, change camera brands to something they support. The same can be said for Tamron lenses - no more k-mount. Originally posted by cmohr Sigma can't just make lenses in K-mount, it's done under licence to use the K-mount. Is there any evidence for that? Sigma and Tamron may have both reverse-engineered the mount without paying Pentax/Ricoh. It's been discussed before and I don't remember seeing proof one way or the other.

02-26-2018, 04:52 PM - 3 Likes	#13
clackers Otis Memorial Pentaxian Join Date: Jul 2013 Location: Melbourne Photos: Albums Posts: 16,397	Not enough Pentaxians ever bought the Sigma 18-35mm Art or the Sigma 35mm Art. People insist we need their lenses, actual sales said this was never true.

02-26-2018, 05:18 PM	#14
vonBaloney Pentaxian Join Date: Oct 2011 Location: Albuquerque, NM Posts: 6,029	I always thought they just reverse engineered it. Certainly that was true in the past (for most if not all third-party makers) when the electronics were simpler (or there were none). If they did it under license, I would expect the lenses they have produced to be completely compatible, but there have always been weird situations and glitches, firmware updates, etc where they haven't always worked as expected -- which I chalk up to the fact that they had to figure out any oddities themselves or play catch-up with any changes Pentax made.

02-26-2018, 05:48 PM	#15
clackers Otis Memorial Pentaxian Join Date: Jul 2013 Location: Melbourne Photos: Albums Posts: 16,397	Originally posted by cmohr I think it is both a Sigma and a Pentax thing. Sigma can't just make lenses in K-mount, it's done under licence to use the K-mount. They also , started dropping certain lenses in K-mount because of the screwdrive AF, they didn't just have to do a Nikon or Canon mount, they had to incorporate the screwdrive into the K-mount,. That should now not be an issue due to the SDM in Pentax current lenses. Sigma would sell many many lenses to Pentax owners if they did support the mount, but Pentax would loose a lot of lens sales in the process, and I cant see Pentax being happy to let someone else reap the profits, but, if they are not letting the licence for K-mount, they should be offering those lenses. But they are not. Double edged sword. Canon and Nikon don't license lenses, AFAIK. It's all reverse engineered.