Irix 15mm f/2,4 for full frame K-mount

house · 10-02-2016, 07:07 AM

For architecture the "monstrous" distortion of the samyang makes it useless. A lens with less field curvature than the da 15 and less distortion than the samyang would certainly be interesting.

awscreo · 10-02-2016, 07:39 AM

Anyone knows when k-mount version is available? They only have canikon on their website right now

Cyril_K5 · 10-02-2016, 10:27 AM

Originally posted by repaap

I'd say that yes those pictures looked soft, and just as stated before me, it was low JPEG sharpening. Some of stuff that looked interesting, mostly corner performance and distortion, or lack of it when comparing this to SY 14. I just did some shooting with my SY14 and it is quite good on lot of things, but taking filters and corner sharpness and distortion is not good at all. For the money samyang is great!(on FF it suffers more than APS-C)

Don't forget. Canon doesn't have in-body stabilisation, it might just be the wrong choice of aperture, hyperfocal and some hand shaking. Difficult to judge the quality of a lens from sample pictures if they are not shot by a technically sound photographer... This being said, I can see a difference between the centers and corners but this isn't obvious

awscreo · 10-02-2016, 10:34 AM

Originally posted by house

For architecture the "monstrous" distortion of the samyang makes it useless. A lens with less field curvature than the da 15 and less distortion than the samyang would certainly be interesting.

Wouldn't Laowa 12mm 2.8 fit the description? Reviews point to less than 1% distortion at 12mm, which is pretty remarkable.

---------- Post added 10-02-16 at 10:46 AM ----------

hmm, just noticed that the Firefly version does not have the front element sealed. I'm wondering if the lens would be able to resist rain, the frontal opening of the lens is so large, one could assume it'd be hit pretty hard by rain in certain wind conditions.

D1N0 · 10-02-2016, 11:28 AM

Originally posted by awscreo

hmm, just noticed that the Firefly version does not have the front element sealed

Where did you see that? What use is wr-resistance when you don't seal the entire lens?

Cyril_K5 · 10-02-2016, 12:00 PM

Originally posted by D1N0

Where did you see that? What use is wr-resistance when you don't seal the entire lens?

The blackstone is like Pentax AW lenses. The Firefly is more WR like. For the price difference, I would go for the Blackstone to get full Weather Sealing

awscreo · 10-02-2016, 01:39 PM

Originally posted by D1N0

Where did you see that? What use is wr-resistance when you don't seal the entire lens?

Irix 15 mm f/2.4 in our hands - LensTip.com

There's a chart in the first third of the preview, and some text regarding front element. I'd like to see the lens tested in rain, maybe it's not as bad as it seems, I mean there must be a reason to have everything but the front element sealed..

D1N0 · 10-02-2016, 02:03 PM

Well it's either weather sealed or not. Partly sealed isn't sealed at all. Maybe the front element doesn't need sealing in the plastic firefly version.

house · 10-02-2016, 02:14 PM

Originally posted by awscreo

Wouldn't Laowa 12mm 2.8 fit the description?

I guess it does! However 12mm is very wide even on crop and without shift it will show a lot of ground in the shot (I keep me verticals vertical). But you are correct thats probably the lens for me to have a look at when it's available.

awscreo · 10-02-2016, 02:39 PM

Originally posted by house

I guess it does! However 12mm is very wide even on crop and without shift it will show a lot of ground in the shot (I keep me verticals vertical). But you are correct thats probably the lens for me to have a look at when it's available.

True, I'm not really familiar with techniques for architectural photography. Wouldn't sensor shift tech help a bit with that? The re-compose feature, I know I have it on K-1, but not sure if other pentax cameras have that.

house · 10-02-2016, 02:51 PM

Originally posted by awscreo

True, I'm not really familiar with techniques for architectural photography. Wouldn't sensor shift tech help a bit with that? The re-compose feature, I know I have it on K-1, but not sure if other pentax cameras have that.

Yes sensor shift helps a fair bit. I use it a lot with my da 15 an k3ii. You just have to retract the hood a bit.

awscreo · 10-02-2016, 05:09 PM

Originally posted by house

Yes sensor shift helps a fair bit. I use it a lot with my da 15 an k3ii. You just have to retract the hood a bit.

Is it possible to combine that and a tilt-shift lens? Sounds like something like that would give a lot of flexibility for architecture

D1N0 · 10-03-2016, 02:42 AM

It helps you to slightly re-frame while on a tripod. So you could also do that with a tilt-shift lens. But only on the horizontal and the vertical axis I believe. No manual tilting of the sensor.

**Tas** · 10-07-2016, 03:43 PM

An extract from the article at the link: "the Facebook page of Samyang in Spain was recently changed to Irix Spain"

Is Samyang behind the Irix lens brand? | Photo Rumors

Tas

Mistral75 · 10-08-2016, 02:26 AM

Originally posted by Tas

An extract from the article at the link: "the Facebook page of Samyang in Spain was recently changed to Irix Spain"

Is Samyang behind the Irix lens brand? | Photo Rumors

Tas

Some indirect links between Samyang and Irix were discussed here already, for instance:

Originally posted by ogl

http://www.moneyhouse.ch/u/th_swiss_ag_CH-170.3.039.538-5.htm

Adamczyk Grzegorz Hubert , a Polish citizen, Krakow (PL), Chairman of the Board, with individual signature;
Frank Luke , from Turbenthal, Wil SG, Member of the Board, with individual signature.

TH Swiss AG in Baar, CHE 319 054 092, c / o LAUNCH OFFICE GmbH, Rathausstrasse 14, 6340 Baar, Aktiengesellschaft (new registration).
Statutes Date: 03.02.2015.
Purpose: development, production, sales and distribution of products in the field of photography;
whole purpose paraphrase statutes in accordance.
Share capital: CHF 100,000.00.

Originally posted by Mistral75

Actually there is a link between Irix and Samyang, even if an indirect one.

Hubert Grzegorz Adamczyk, the chairman and co-founder of the Swiss company 'TH Swiss AG' that stands behind the Irix lenses, is also the founder, owner and manager of a Polish company named Delta, which is the exclusive distributor of Samyang in Poland (and, incidentally, owns the e-retailer foto-tip).

Originally posted by Mistral75

To me Samyang and Delta have too many common interests for Hubert Grzegorz Adamczyk to launch himself into the Irix venture without requesting the prior green light from Samyang and probably their assistance in finding the right Korean players to partner with, be they, apart from Samyang themselves, suppliers to Samyang or third parties not specifically involved with Samyang..

10-07-2016, 03:43 PM	#359
Tas Site Supporter Join Date: Aug 2013 Location: Brisbane, QLD Photos: Gallery \| Albums Posts: 2,202	Samyang/Irix connection rumours get a bump An extract from the article at the link: "the Facebook page of Samyang in Spain was recently changed to Irix Spain" Is Samyang behind the Irix lens brand? \| Photo Rumors Tas

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10-02-2016, 07:07 AM	#346
house Pentaxian Join Date: May 2015 Photos: Albums Posts: 3,306	For architecture the "monstrous" distortion of the samyang makes it useless. A lens with less field curvature than the da 15 and less distortion than the samyang would certainly be interesting.

10-02-2016, 07:39 AM	#347
awscreo Veteran Member Join Date: May 2016 Photos: Gallery \| Albums Posts: 2,722	Anyone knows when k-mount version is available? They only have canikon on their website right now

10-02-2016, 10:27 AM	#348
Cyril_K5 Forum Member Join Date: Jun 2013 Posts: 73	Originally posted by repaap I'd say that yes those pictures looked soft, and just as stated before me, it was low JPEG sharpening. Some of stuff that looked interesting, mostly corner performance and distortion, or lack of it when comparing this to SY 14. I just did some shooting with my SY14 and it is quite good on lot of things, but taking filters and corner sharpness and distortion is not good at all. For the money samyang is great!(on FF it suffers more than APS-C) Don't forget. Canon doesn't have in-body stabilisation, it might just be the wrong choice of aperture, hyperfocal and some hand shaking. Difficult to judge the quality of a lens from sample pictures if they are not shot by a technically sound photographer... This being said, I can see a difference between the centers and corners but this isn't obvious

10-02-2016, 10:34 AM	#349
awscreo Veteran Member Join Date: May 2016 Photos: Gallery \| Albums Posts: 2,722	Originally posted by house For architecture the "monstrous" distortion of the samyang makes it useless. A lens with less field curvature than the da 15 and less distortion than the samyang would certainly be interesting. Wouldn't Laowa 12mm 2.8 fit the description? Reviews point to less than 1% distortion at 12mm, which is pretty remarkable. ---------- Post added 10-02-16 at 10:46 AM ---------- hmm, just noticed that the Firefly version does not have the front element sealed. I'm wondering if the lens would be able to resist rain, the frontal opening of the lens is so large, one could assume it'd be hit pretty hard by rain in certain wind conditions.

10-02-2016, 11:28 AM	#350
D1N0 Pentaxian Join Date: May 2012 Location: --- Photos: Gallery Posts: 6,802	Originally posted by awscreo hmm, just noticed that the Firefly version does not have the front element sealed Where did you see that? What use is wr-resistance when you don't seal the entire lens?

10-02-2016, 12:00 PM	#351
Cyril_K5 Forum Member Join Date: Jun 2013 Posts: 73	Originally posted by D1N0 Where did you see that? What use is wr-resistance when you don't seal the entire lens? The blackstone is like Pentax AW lenses. The Firefly is more WR like. For the price difference, I would go for the Blackstone to get full Weather Sealing

10-02-2016, 01:39 PM	#352
awscreo Veteran Member Join Date: May 2016 Photos: Gallery \| Albums Posts: 2,722	Originally posted by D1N0 Where did you see that? What use is wr-resistance when you don't seal the entire lens? Irix 15 mm f/2.4 in our hands - LensTip.com There's a chart in the first third of the preview, and some text regarding front element. I'd like to see the lens tested in rain, maybe it's not as bad as it seems, I mean there must be a reason to have everything but the front element sealed..

10-02-2016, 02:03 PM	#353
D1N0 Pentaxian Join Date: May 2012 Location: --- Photos: Gallery Posts: 6,802	Well it's either weather sealed or not. Partly sealed isn't sealed at all. Maybe the front element doesn't need sealing in the plastic firefly version.

10-02-2016, 02:14 PM	#354
house Pentaxian Join Date: May 2015 Photos: Albums Posts: 3,306	Originally posted by awscreo Wouldn't Laowa 12mm 2.8 fit the description? I guess it does! However 12mm is very wide even on crop and without shift it will show a lot of ground in the shot (I keep me verticals vertical). But you are correct thats probably the lens for me to have a look at when it's available.

10-02-2016, 02:39 PM	#355
awscreo Veteran Member Join Date: May 2016 Photos: Gallery \| Albums Posts: 2,722	Originally posted by house I guess it does! However 12mm is very wide even on crop and without shift it will show a lot of ground in the shot (I keep me verticals vertical). But you are correct thats probably the lens for me to have a look at when it's available. True, I'm not really familiar with techniques for architectural photography. Wouldn't sensor shift tech help a bit with that? The re-compose feature, I know I have it on K-1, but not sure if other pentax cameras have that.

10-02-2016, 02:51 PM	#356
house Pentaxian Join Date: May 2015 Photos: Albums Posts: 3,306	Originally posted by awscreo True, I'm not really familiar with techniques for architectural photography. Wouldn't sensor shift tech help a bit with that? The re-compose feature, I know I have it on K-1, but not sure if other pentax cameras have that. Yes sensor shift helps a fair bit. I use it a lot with my da 15 an k3ii. You just have to retract the hood a bit.

10-02-2016, 05:09 PM	#357
awscreo Veteran Member Join Date: May 2016 Photos: Gallery \| Albums Posts: 2,722	Originally posted by house Yes sensor shift helps a fair bit. I use it a lot with my da 15 an k3ii. You just have to retract the hood a bit. Is it possible to combine that and a tilt-shift lens? Sounds like something like that would give a lot of flexibility for architecture

10-03-2016, 02:42 AM	#358
D1N0 Pentaxian Join Date: May 2012 Location: --- Photos: Gallery Posts: 6,802	It helps you to slightly re-frame while on a tripod. So you could also do that with a tilt-shift lens. But only on the horizontal and the vertical axis I believe. No manual tilting of the sensor.

10-08-2016, 02:26 AM	#360
Mistral75 Pentaxian Join Date: Feb 2009 Location: Paris, France Posts: 7,527	Originally posted by Tas An extract from the article at the link: "the Facebook page of Samyang in Spain was recently changed to Irix Spain" Is Samyang behind the Irix lens brand? \| Photo Rumors Tas Some indirect links between Samyang and Irix were discussed here already, for instance: Originally posted by ogl http://www.moneyhouse.ch/u/th_swiss_ag_CH-170.3.039.538-5.htm Adamczyk Grzegorz Hubert , a Polish citizen, Krakow (PL), Chairman of the Board, with individual signature; Frank Luke , from Turbenthal, Wil SG, Member of the Board, with individual signature. TH Swiss AG in Baar, CHE 319 054 092, c / o LAUNCH OFFICE GmbH, Rathausstrasse 14, 6340 Baar, Aktiengesellschaft (new registration). Statutes Date: 03.02.2015. Purpose: development, production, sales and distribution of products in the field of photography; whole purpose paraphrase statutes in accordance. Share capital: CHF 100,000.00. Originally posted by Mistral75 Actually there is a link between Irix and Samyang, even if an indirect one. Hubert Grzegorz Adamczyk, the chairman and co-founder of the Swiss company 'TH Swiss AG' that stands behind the Irix lenses, is also the founder, owner and manager of a Polish company named Delta, which is the exclusive distributor of Samyang in Poland (and, incidentally, owns the e-retailer foto-tip). Originally posted by Mistral75 To me Samyang and Delta have too many common interests for Hubert Grzegorz Adamczyk to launch himself into the Irix venture without requesting the prior green light from Samyang and probably their assistance in finding the right Korean players to partner with, be they, apart from Samyang themselves, suppliers to Samyang or third parties not specifically involved with Samyang..