Four new non-K-mount lenses from sigma next week

ZeljkoS · 02-20-2017, 06:46 AM

As far as I know, new 85mm 1.4 is not available for Pentax, so why should these be any different?

mee · 02-20-2017, 06:55 AM

We already have a thread going. Four new non-K-mount lenses from sigma next week - PentaxForums.com

pinholecam · 02-20-2017, 06:57 AM - **2 Likes**

No point mentioning these lenses other than to stir up another lamentation thread about them not being available...

Fat Albert · 02-20-2017, 07:21 AM - **1 Like**

Originally posted by mee

The only way you'll see MC-11 like adapter for K more is if Pentax launch a mirrorless K mount body..

Don't they already have one in the K-01?

:: ducks ::

Blue · 02-20-2017, 07:34 AM - **1 Like**

Originally posted by mee

We already have a thread going. Four new non-K-mount lenses from sigma next week - PentaxForums.com

Threads merged!

D1N0 · 02-20-2017, 07:38 AM

The 24-70

Looks about the same size as the Pentax D FA 24-70. No great loss when it doesn't come in K-mount. Same goes for the 100-400. 5-6.3 We have a 150-450 4.5-5.6 though the Sigma is a lot more compact with a 67mm diameter instead of 86. And probably also cheaper and lighter.

awscreo · 02-20-2017, 01:09 PM

Oh the 14mm is 1.8? So that makes it pretty much the fastest UWA on the market? If it's sharp wide open, that'd be a great option for astro - lower iso needed, cleaner files, more DR to play with etc. I'm sure most of these will be great lenses

mee · 02-20-2017, 03:00 PM

Originally posted by D1N0

The 24-70

Looks about the same size as the Pentax D FA 24-70. No great loss when it doesn't come in K-mount. Same goes for the 100-400. 5-6.3 We have a 150-450 4.5-5.6 though the Sigma is a lot more compact with a 67mm diameter instead of 86. And probably also cheaper and lighter.

The Global Vision lenses are swappable from mount to mount. Which could be handy if you have a nice copy and are switching systems.. get to keep your Sigma lenses. Well.. as long as you don't switch to Pentax. Then you're hosed.

The 24-70 will matter in how it performs at 2.8 and throughout in the edges and corners. And, of course, price. Plus it works with the dock so we have 16 AF adjustment points (4 focal lengths at 4 distances) versus the 1 Pentax gives us in body.

But we don't have that.. because we chose Pentax. And guys here say who needs AF? Manual focus is the way to go.

Simen1 · 02-20-2017, 04:09 PM

Originally posted by rawr

f1.8 seems rather a strange option for 14mm full-frame.
Sigma probably made that lens just to prove they can, not because any photographers were asking for it.

Northern light photo are more popular now then ever before..

I guess it would be great for moonlight reflections on a lake too, but f/1,8 may be less suited for astrophoto in general. Both because the FoV is too wide for most astrophoto, and because f/1,8 most likely causes visible coma. For long exposures, stacking and tracking is better techniques then large aperture.

krazykat · 02-20-2017, 05:23 PM

Would love the 135/1.8

fsge · 02-20-2017, 07:49 PM

Nothing appealing to me here, but I can understand this type of news adds an additional layer of frustration to some of us...

Danaher Dempsey · 02-21-2017, 02:43 AM

Originally posted by rawr

f1.8 seems rather a strange option for 14mm full-frame.
Sigma probably made that lens just to prove they can, not because any photographers were asking for it.

Maybe astrophotography for 14mm 1.8 lens

Simen1 · 02-23-2017, 03:08 PM

Originally posted by Danaher Dempsey

Maybe astrophotography for 14mm 1.8 lens

Its too wide for most astrophoto and normal tracking and stacking is often a better way of getting good results. I suggest its a northern lights lens.

awscreo · 02-23-2017, 04:43 PM

Originally posted by Simen1

Its too wide for most astrophoto and normal tracking and stacking is often a better way of getting good results. I suggest its a northern lights lens.

Interesting, people advised me to get Rokinon 14 2.8 as a starter astro lens. I'm pretty new to it, hoping to do more of it in summer. Why uwas aren't a good choice?

Simen1 · 02-24-2017, 07:42 AM

Since its a full frame lens I think 14mm in full frame terms. UWA is typically a astro-landscape lens and like normal landscape, 14mm on FF (or 9-10mm on APS-C) is quite extreme in my opinion. It has its nice, but its not the most common.

02-20-2017, 04:09 PM	#24
Simen1 Veteran Member Join Date: Jul 2009 Location: Tromsø, Norway Photos: Albums Posts: 1,031	Originally posted by rawr f1.8 seems rather a strange option for 14mm full-frame. Sigma probably made that lens just to prove they can, not because any photographers were asking for it. Northern light photo are more popular now then ever before.. I guess it would be great for moonlight reflections on a lake too, but f/1,8 may be less suited for astrophoto in general. Both because the FoV is too wide for most astrophoto, and because f/1,8 most likely causes visible coma. For long exposures, stacking and tracking is better techniques then large aperture. Last edited by Simen1; 02-20-2017 at 04:21 PM.

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
adapters for non-K-mount lenses to Pentax K-mount DSLRs: new dimensions for LBA	Douglas_of_Sweden	Pentax Camera and Field Accessories	154	07-10-2020 10:57 AM
Sigma Refurbished Lenses - K mount	interested_observer	Pentax SLR Lens Discussion	3	10-14-2015 01:04 AM
New Q/K lenses to be unveiled next week?	Adam	Pentax News and Rumors	132	04-30-2012 10:58 AM
The next K-Mount lenses to come out this year... ?	beholder3	Photographic Industry and Professionals	55	01-31-2012 02:21 PM

02-20-2017, 06:46 AM	#16
ZeljkoS Veteran Member Join Date: Feb 2014 Photos: Gallery \| Albums Posts: 421	As far as I know, new 85mm 1.4 is not available for Pentax, so why should these be any different?

02-20-2017, 06:55 AM	#17
mee Veteran Member Join Date: May 2010 Posts: 7,403	We already have a thread going. Four new non-K-mount lenses from sigma next week - PentaxForums.com

02-20-2017, 06:57 AM - 2 Likes	#18
pinholecam Pentaxian Join Date: Oct 2009 Location: North Photos: Gallery Posts: 4,706	No point mentioning these lenses other than to stir up another lamentation thread about them not being available...

02-20-2017, 07:21 AM - 1 Like	#19
Fat Albert Veteran Member Join Date: Jul 2013 Posts: 966	Originally posted by mee The only way you'll see MC-11 like adapter for K more is if Pentax launch a mirrorless K mount body.. Don't they already have one in the K-01? :: ducks ::

02-20-2017, 07:34 AM - 1 Like	#20
Blue Moderator Site Supporter Join Date: Jun 2008 Location: Florida Hill Country Photos: Gallery \| Albums Posts: 17,377	Originally posted by mee We already have a thread going. Four new non-K-mount lenses from sigma next week - PentaxForums.com Threads merged!

02-20-2017, 07:38 AM	#21
D1N0 Pentaxian Join Date: May 2012 Location: --- Photos: Gallery Posts: 6,802 Original Poster	The 24-70 Looks about the same size as the Pentax D FA 24-70. No great loss when it doesn't come in K-mount. Same goes for the 100-400. 5-6.3 We have a 150-450 4.5-5.6 though the Sigma is a lot more compact with a 67mm diameter instead of 86. And probably also cheaper and lighter.

02-20-2017, 01:09 PM	#22
awscreo Veteran Member Join Date: May 2016 Photos: Gallery \| Albums Posts: 2,722	Oh the 14mm is 1.8? So that makes it pretty much the fastest UWA on the market? If it's sharp wide open, that'd be a great option for astro - lower iso needed, cleaner files, more DR to play with etc. I'm sure most of these will be great lenses

02-20-2017, 03:00 PM	#23
mee Veteran Member Join Date: May 2010 Posts: 7,403	Originally posted by D1N0 The 24-70 Looks about the same size as the Pentax D FA 24-70. No great loss when it doesn't come in K-mount. Same goes for the 100-400. 5-6.3 We have a 150-450 4.5-5.6 though the Sigma is a lot more compact with a 67mm diameter instead of 86. And probably also cheaper and lighter. The Global Vision lenses are swappable from mount to mount. Which could be handy if you have a nice copy and are switching systems.. get to keep your Sigma lenses. Well.. as long as you don't switch to Pentax. Then you're hosed. The 24-70 will matter in how it performs at 2.8 and throughout in the edges and corners. And, of course, price. Plus it works with the dock so we have 16 AF adjustment points (4 focal lengths at 4 distances) versus the 1 Pentax gives us in body. But we don't have that.. because we chose Pentax. And guys here say who needs AF? Manual focus is the way to go.

02-20-2017, 05:23 PM	#25
krazykat Veteran Member Join Date: Aug 2010 Posts: 546	Would love the 135/1.8

02-20-2017, 07:49 PM	#26
fsge Veteran Member Join Date: Jun 2010 Location: Genf Posts: 1,138	Nothing appealing to me here, but I can understand this type of news adds an additional layer of frustration to some of us...

Thread Tools	Search this Thread
	Search this Thread: Advanced Search

02-21-2017, 02:43 AM	#27
Danaher Dempsey Forum Member Join Date: Sep 2015 Posts: 50	Originally posted by rawr f1.8 seems rather a strange option for 14mm full-frame. Sigma probably made that lens just to prove they can, not because any photographers were asking for it. Maybe astrophotography for 14mm 1.8 lens

02-23-2017, 03:08 PM	#28
Simen1 Veteran Member Join Date: Jul 2009 Location: Tromsø, Norway Photos: Albums Posts: 1,031	Originally posted by Danaher Dempsey Maybe astrophotography for 14mm 1.8 lens Its too wide for most astrophoto and normal tracking and stacking is often a better way of getting good results. I suggest its a northern lights lens.

02-23-2017, 04:43 PM	#29
awscreo Veteran Member Join Date: May 2016 Photos: Gallery \| Albums Posts: 2,722	Originally posted by Simen1 Its too wide for most astrophoto and normal tracking and stacking is often a better way of getting good results. I suggest its a northern lights lens. Interesting, people advised me to get Rokinon 14 2.8 as a starter astro lens. I'm pretty new to it, hoping to do more of it in summer. Why uwas aren't a good choice?

02-24-2017, 07:42 AM	#30
Simen1 Veteran Member Join Date: Jul 2009 Location: Tromsø, Norway Photos: Albums Posts: 1,031	Since its a full frame lens I think 14mm in full frame terms. UWA is typically a astro-landscape lens and like normal landscape, 14mm on FF (or 9-10mm on APS-C) is quite extreme in my opinion. It has its nice, but its not the most common.