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ventaxian · 12-10-2016, 01:53 AM

I'm thinking about buying a 15mm lens for my K-1. The Irix seems attractive but what about Sigma's 15mm 2.8 AF?
Any advice?
Cheers, Ron

Na Horuk · 12-10-2016, 02:23 AM

I remember when 28mm was considered wide angle..
Anyway, the Sigma 15mm is a fisheye, so it is very different: Sigma 15mm F2.8 EX DG Diagonal Fisheye Lens Reviews - Sigma Lenses - Pentax Lens Review Database
It renders photos, lines and perspective, quite differently from normal uwa lenses.

15mm options: Irix 15mm (two versions), Laowa 15mm macro, Pentax DFA 15-30mm
Fisheye options: Sigma 15mm FE, Zenitar 16mm, Peleng fisheye, and I think Samyang makes an FF fisheye (and also an APSC fisheye, and some for even smaller formats)

**i_trax** · 12-10-2016, 03:03 AM

Hi I was looking for a while for something similar for my K-1.
I have number of primes ( all MF) 24mm and 28mm but I wanted something wider.
Placed an order for Rokinon/Samyang 14mm 2.8 MF in PKA mount.
I also have Samyang 85mm 1.4 , it is a bit heavy and big ( compared to FA 77 1.8 Limited) but can produce excellent results and I love the build quality.
Rokinon is coming from US , I hope it will arrive before Christmas.
kind regards
jack

bassek · 12-10-2016, 07:33 AM

I have the (somewhat rare) Sigma EX 15-30/3.5.
Not for a fan of filters...

Seb

**Kerrowdown** · 12-10-2016, 10:15 AM - **2 Likes**

Originally posted by ventaxian

15mm for K-1

If you would consider a manual focus lens, which with the enormous depth of field with these ultra wide angle lenses offer, focus is not really an issue.

That being the case... I can throughly recommend my “Mistress" (Pentax-A 15mm F3.5) as a suggestion for you.

**gofour3** · 12-10-2016, 12:13 PM - **1 Like**

Originally posted by Kerrowdown

If you would consider a manual focus lens, which with the enormous depth of field with these ultra wide angle lenses offer, focus is not really an issue.

That being the case... I can throughly recommend my “Mistress" (Pentax-A 15mm F3.5) as a suggestion for you.

+1

Funny how the Pentax A15/3.5 or K15/3.5 never get mentioned when folks are discussing an ultra wide angle lens in that focal length?

I've owed both the A & K versions and they are great options on FF and will be way better built than the current crop of plastic lenses.

Phil.

klaus123 · 12-10-2016, 12:25 PM - **1 Like**

With some luck you can find a Tamron 14/2,8AF which is optically identicaal to the Nikon

Camera
PENTAX K-1

Focal Length
14mm

Aperture
f/2.8

Exposure
1/2s

ISO
3200

fehknt · 12-10-2016, 01:29 PM

I just got a Venus 15mm f/4 macro and it's lots of fun but fully manual (no aperture linkage etc.). It's a shift lens on APS-C and I hear it can shift still on FF but not as much without hitting the edge of the image circle and it's a little soft on edges of FF so I guess it depends a lot on what you intend to shoot and how. You certainly can't 'run and gun' with it because of no auto-anything. discussion in another forum post

Basically it's not optimized for being the best landscape lens out there so if you are only using it for that, probably not the right choice. But it does come with some added capabilities that are quite unique.

ScooterMaxi Jim · 12-10-2016, 05:58 PM

Originally posted by Na Horuk

I remember when 28mm was considered wide angle..
Anyway, the Sigma 15mm is a fisheye, so it is very different: Sigma 15mm F2.8 EX DG Diagonal Fisheye Lens Reviews - Sigma Lenses - Pentax Lens Review Database
It renders photos, lines and perspective, quite differently from normal uwa lenses.

15mm options: Irix 15mm (two versions), Laowa 15mm macro, Pentax DFA 15-30mm
Fisheye options: Sigma 15mm FE, Zenitar 16mm, Peleng fisheye, and I think Samyang makes an FF fisheye (and also an APSC fisheye, and some for even smaller formats)

In anticipation of FF, I bought the Sigma 12-24 (original version with virtually no distortion) as a refurbished (new, old stock), and have only used the lens for testing (first copy was decentered, a common malady in this exotic lens). At 15mm, it is stellar - probably its peak IQ setting. I've decided against getting the K-1, so I'm getting close to offering it on the market. Although a bit slow, quite nice overall. Certainly a far-cry better than the rather odd Sigma 15-30 I once owned; those were rare for good reason.

jimr-pdx · 12-10-2016, 06:02 PM

Originally posted by ventaxian

I'm thinking about buying a 15mm lens for my K-1. The Irix seems attractive but what about Sigma's 15mm 2.8 AF?
Any advice?
Cheers, Ron

It's a fisheye so it won't work for everything, but it's a very good lens. It's fast and can focus very close; not much of a bokeh lens but you can squeeze a little from it

**RobA_Oz** · 12-10-2016, 06:39 PM

Originally posted by gofour3

Funny how the Pentax A15/3.5 or K15/3.5 never get mentioned when folks are discussing an ultra wide angle lens in that focal length?

Possibly something to do with price and availability? I've looked at these on the few occasions when one has popped up for sale, but I could never quite justify the price to myself, particularly when I shot APS-C, and I already had both the DA14 and 15. They might have to go, now, so I can start to think more seriously about it.

BTW, the Sigma 8-16 works tolerably well at the 16mm end, on 35FF.

ventaxian · 12-11-2016, 08:09 AM

Thanks for all the responses. It hasn't brought me any closer to a decision but, on the other hand, there's no rush.

Ron

jcdoss · 12-11-2016, 11:31 AM

Originally posted by Kerrowdown

I can throughly recommend my “Mistress" (Pentax-A 15mm F3.5) as a suggestion for you.

I guess I'm quietly looking for the the K version of one of these in excellent condition..... but not for a grand.

**Kerrowdown** · 12-11-2016, 04:40 PM

Originally posted by jcdoss

I guess I'm quietly looking for the the K version of one of these

That'll be a near relative of my "Mistress".

Originally posted by jcdoss

but not for a grand.

But these "Ladies" are not that expensive, average for an A series is $693 and for a K Series $715... showing on the forum here.

12-10-2016, 01:53 AM	#1
ventaxian Junior Member Join Date: Dec 2012 Location: Doetinchem Photos: Gallery Posts: 30	15mm for K-1 I'm thinking about buying a 15mm lens for my K-1. The Irix seems attractive but what about Sigma's 15mm 2.8 AF? Any advice? Cheers, Ron

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12-10-2016, 02:23 AM	#2
Na Horuk Veteran Member Join Date: Feb 2012 Location: Slovenia, probably Photos: Gallery \| Albums Posts: 11,186	I remember when 28mm was considered wide angle.. Anyway, the Sigma 15mm is a fisheye, so it is very different: Sigma 15mm F2.8 EX DG Diagonal Fisheye Lens Reviews - Sigma Lenses - Pentax Lens Review Database It renders photos, lines and perspective, quite differently from normal uwa lenses. 15mm options: Irix 15mm (two versions), Laowa 15mm macro, Pentax DFA 15-30mm Fisheye options: Sigma 15mm FE, Zenitar 16mm, Peleng fisheye, and I think Samyang makes an FF fisheye (and also an APSC fisheye, and some for even smaller formats)

12-10-2016, 03:03 AM	#3
i_trax Loyal Site Supporter Join Date: Jan 2011 Location: Perth Western Australia Photos: Gallery \| Albums Posts: 2,621	Hi I was looking for a while for something similar for my K-1. I have number of primes ( all MF) 24mm and 28mm but I wanted something wider. Placed an order for Rokinon/Samyang 14mm 2.8 MF in PKA mount. I also have Samyang 85mm 1.4 , it is a bit heavy and big ( compared to FA 77 1.8 Limited) but can produce excellent results and I love the build quality. Rokinon is coming from US , I hope it will arrive before Christmas. kind regards jack

12-10-2016, 07:33 AM	#4
bassek Pentaxian Join Date: Feb 2011 Photos: Gallery Posts: 706	I have the (somewhat rare) Sigma EX 15-30/3.5. Not for a fan of filters... Seb

12-10-2016, 10:15 AM - 2 Likes	#5
Kerrowdown PEG Moderator Join Date: Aug 2008 Location: Highlands of Scotland... "Hold Infinity in the palm of your hand" - William Blake Photos: Gallery Posts: 57,867	Originally posted by ventaxian 15mm for K-1 If you would consider a manual focus lens, which with the enormous depth of field with these ultra wide angle lenses offer, focus is not really an issue. That being the case... I can throughly recommend my “Mistress" (Pentax-A 15mm F3.5) as a suggestion for you.

12-10-2016, 12:13 PM - 1 Like	#6
gofour3 Site Supporter Join Date: Oct 2008 Location: Vancouver, Canada Posts: 8,093	Originally posted by Kerrowdown If you would consider a manual focus lens, which with the enormous depth of field with these ultra wide angle lenses offer, focus is not really an issue. That being the case... I can throughly recommend my “Mistress" (Pentax-A 15mm F3.5) as a suggestion for you. +1 Funny how the Pentax A15/3.5 or K15/3.5 never get mentioned when folks are discussing an ultra wide angle lens in that focal length? I've owed both the A & K versions and they are great options on FF and will be way better built than the current crop of plastic lenses. Phil.

12-10-2016, 12:25 PM - 1 Like	#7
klaus123 Senior Member Join Date: Apr 2011 Location: Germany Posts: 238	With some luck you can find a Tamron 14/2,8AF which is optically identicaal to the Nikon Camera PENTAX K-1 Focal Length 14mm Aperture f/2.8 Exposure 1/2s ISO 3200

12-10-2016, 01:29 PM	#8
fehknt Senior Member Join Date: Oct 2015 Posts: 142	I just got a Venus 15mm f/4 macro and it's lots of fun but fully manual (no aperture linkage etc.). It's a shift lens on APS-C and I hear it can shift still on FF but not as much without hitting the edge of the image circle and it's a little soft on edges of FF so I guess it depends a lot on what you intend to shoot and how. You certainly can't 'run and gun' with it because of no auto-anything. discussion in another forum post Basically it's not optimized for being the best landscape lens out there so if you are only using it for that, probably not the right choice. But it does come with some added capabilities that are quite unique.

12-10-2016, 05:58 PM	#9
ScooterMaxi Jim Veteran Member Join Date: Jul 2009 Location: Minnesota Posts: 1,520	Originally posted by Na Horuk I remember when 28mm was considered wide angle.. Anyway, the Sigma 15mm is a fisheye, so it is very different: Sigma 15mm F2.8 EX DG Diagonal Fisheye Lens Reviews - Sigma Lenses - Pentax Lens Review Database It renders photos, lines and perspective, quite differently from normal uwa lenses. 15mm options: Irix 15mm (two versions), Laowa 15mm macro, Pentax DFA 15-30mm Fisheye options: Sigma 15mm FE, Zenitar 16mm, Peleng fisheye, and I think Samyang makes an FF fisheye (and also an APSC fisheye, and some for even smaller formats) In anticipation of FF, I bought the Sigma 12-24 (original version with virtually no distortion) as a refurbished (new, old stock), and have only used the lens for testing (first copy was decentered, a common malady in this exotic lens). At 15mm, it is stellar - probably its peak IQ setting. I've decided against getting the K-1, so I'm getting close to offering it on the market. Although a bit slow, quite nice overall. Certainly a far-cry better than the rather odd Sigma 15-30 I once owned; those were rare for good reason.

12-10-2016, 06:02 PM	#10
jimr-pdx Pentaxian Join Date: May 2010 Location: now 1 hour north of PDX Photos: Gallery \| Albums Posts: 3,897	Originally posted by ventaxian I'm thinking about buying a 15mm lens for my K-1. The Irix seems attractive but what about Sigma's 15mm 2.8 AF? Any advice? Cheers, Ron It's a fisheye so it won't work for everything, but it's a very good lens. It's fast and can focus very close; not much of a bokeh lens but you can squeeze a little from it

12-10-2016, 06:39 PM	#11
RobA_Oz Site Supporter Join Date: Nov 2008 Location: Tasmania, Australia Photos: Gallery Posts: 8,209	Originally posted by gofour3 Funny how the Pentax A15/3.5 or K15/3.5 never get mentioned when folks are discussing an ultra wide angle lens in that focal length? Possibly something to do with price and availability? I've looked at these on the few occasions when one has popped up for sale, but I could never quite justify the price to myself, particularly when I shot APS-C, and I already had both the DA14 and 15. They might have to go, now, so I can start to think more seriously about it. BTW, the Sigma 8-16 works tolerably well at the 16mm end, on 35FF.

12-11-2016, 08:09 AM	#12
ventaxian Junior Member Join Date: Dec 2012 Location: Doetinchem Photos: Gallery Posts: 30 Original Poster	Thanks for all the responses. It hasn't brought me any closer to a decision but, on the other hand, there's no rush. Ron

12-11-2016, 11:31 AM	#13
jcdoss Pentaxian Join Date: Nov 2012 Location: Ingelheim am Rhein, Germany Photos: Gallery \| Albums Posts: 6,802	Originally posted by Kerrowdown I can throughly recommend my “Mistress" (Pentax-A 15mm F3.5) as a suggestion for you. I guess I'm quietly looking for the the K version of one of these in excellent condition..... but not for a grand.

12-11-2016, 04:40 PM	#14
Kerrowdown PEG Moderator Join Date: Aug 2008 Location: Highlands of Scotland... "Hold Infinity in the palm of your hand" - William Blake Photos: Gallery Posts: 57,867	Originally posted by jcdoss I guess I'm quietly looking for the the K version of one of these That'll be a near relative of my "Mistress". Originally posted by jcdoss but not for a grand. But these "Ladies" are not that expensive, average for an A series is $693 and for a K Series $715... showing on the forum here.