Irix 15mm frustration

istvan_sp · 01-31-2017, 11:06 AM

So again, the attachments, with enlarged parts

---------- Post added 01-31-17 at 11:09 AM ----------

So again the attachments, with enlarged parts... (sorry for posting it twice)

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lennyl · 02-01-2017, 02:20 PM

I returned back IRIX 15 Fireflay last week. And I am waiting for a new piece. I hope it will be better.

left side was terrible on f2,4 - f5,6

on f11 was IRIX super sharp from corner to corner

f11, very nice to backlight

alpheios · 02-02-2017, 02:52 AM

I changed my lens acquisition strategy and currently an UWA lens is not one of my priorities anymore. But I think if the need for an UWA should arise again, I might actually consider giving them another chance. As I said before, I really hope they will be able to sort out their QC and service issues because they've created an awesome lens. The pictures I've seen from good copies are stunning. And the lens feels and looks very well built and has some clever features to it.

I felt the need to say that because I don't want to stop anyone from buying their lenses. Just be aware that you might get a decentered copy. And make sure you buy it at a store where return and exchange isn't as complicated. I think I just had some really bad luck and the way they handled my complaints was far from professional. But that can (and hopefully will) change.

ddamski · 02-02-2017, 04:43 AM

today it is the first time i hear about the decentering issues.. so i am little nervous with my 1st irix lens which arrives tomorrow

ddamski · 02-04-2017, 05:10 AM

i think i have also a slight issue on the left...:but it is not so bad for F/2.4 (dont mind the magent cast)

Driline · 02-04-2017, 08:59 AM

Ahh....another rank and file member of the unpaid customer quality control department

kvetcha · 02-06-2017, 12:50 PM

Well, just ordered myself a copy (Firefly) for interior shoots. Gotta say, this spooks me a little.

kvetcha · 02-07-2017, 01:27 PM

Lens just arrived and, as I feared, it's pretty badly decentered. Here we go...

**MJSfoto1956** · 02-07-2017, 01:37 PM

Fortunately, the Samyang 14mm + good lens profile is a proven winner for even architectural shots.

Michael

kvetcha · 02-07-2017, 02:11 PM

Originally posted by MJSfoto1956

Fortunately, the Samyang 14mm + good lens profile is a proven winner for even architectural shots.

Michael

I'm doing some interior test shots at f/13 and it's actually not bad. It's only wide open that it's obvious.

For my usage, it might be sufficient. Distortion is blessedly low, almost imperceptible.

lennyl · 02-09-2017, 02:36 AM - **1 Like**

I got second copy IRIX 15/2,4 Fireflay. It is definitely better on f2,4 and now I'm happy :-)

first copy of IRIX - very bad

second copy of IRIX - excelent
left and right sides of the down corners

left and right sides of the upper corners

higher resolution:

lennyl · 02-09-2017, 01:22 PM

I repeated the test today with the second piece of IRIX, unbelievable:

picture through window from work with CPL NiSi 95mm MC, at f2,4, left and right side from the corners at 1:1

f2,4 vs f11, perfect, vigneting on f2,4 is still visible of course...

high resolution at f2,4

Do not be afraid to return IRIX and want a second piece :-)

alpheios · 02-10-2017, 01:38 AM

Originally posted by lennyl

Do not be afraid to return IRIX and want a second piece :-)

Your second copy is definitely a good one. Did you buy it directly from Irix? If so how was your experience with customer service?

---------- Post added 02-10-17 at 01:42 AM ----------

Originally posted by kvetcha

For my usage, it might be sufficient. Distortion is blessedly low, almost imperceptible.

This is of course up to you but I wouldn't want a new lens that is limited to a use at f/8 or higher. The day might come where you would like to use it for a different purpose to take a picture with a wider aperture. If it was mine I would get it replaced until you get a good copy.

istvan_sp · 02-10-2017, 02:01 AM

Hi all,

I got the new copy of IRIX 15mm and maybe it's a little bit better, but still decentered.

Maybe the only difference is that the infinity is correctly set, so at infinity it's seems to be ok.

I can't always see the problem, only on dark photos, and if I focus on something in the foreground at 3 meters, sometimes the right side of the background is blurry, and the left side is still sharp.

At f4.5 it is razor sharp anyway, so I think I won't return it again, but I'll have to use a tripod for low light photos.

It's also usable for night photography handheld at 2.4 but I have to be avare of this blurryness.

lennyl · 02-10-2017, 12:35 PM

alpheios: I bought IRIX from Slovak local eshop megafoto.sk, 428euro (lens return was accepted within 15 days without giving any reason under our law to buy it on the internet).

02-10-2017, 01:38 AM	#28
alpheios Pentaxian Join Date: Nov 2015 Location: Bremen Posts: 410 Original Poster	Originally posted by lennyl Do not be afraid to return IRIX and want a second piece :-) Your second copy is definitely a good one. Did you buy it directly from Irix? If so how was your experience with customer service? ---------- Post added 02-10-17 at 01:42 AM ---------- Originally posted by kvetcha For my usage, it might be sufficient. Distortion is blessedly low, almost imperceptible. This is of course up to you but I wouldn't want a new lens that is limited to a use at f/8 or higher. The day might come where you would like to use it for a different purpose to take a picture with a wider aperture. If it was mine I would get it replaced until you get a good copy. Last edited by alpheios; 02-10-2017 at 01:49 AM.

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02-01-2017, 02:20 PM	#17
lennyl Forum Member Join Date: Mar 2013 Location: Slovakia Posts: 63	I returned back IRIX 15 Fireflay last week. And I am waiting for a new piece. I hope it will be better. left side was terrible on f2,4 - f5,6 on f11 was IRIX super sharp from corner to corner f11, very nice to backlight

02-02-2017, 02:52 AM	#18
alpheios Pentaxian Join Date: Nov 2015 Location: Bremen Posts: 410 Original Poster	I changed my lens acquisition strategy and currently an UWA lens is not one of my priorities anymore. But I think if the need for an UWA should arise again, I might actually consider giving them another chance. As I said before, I really hope they will be able to sort out their QC and service issues because they've created an awesome lens. The pictures I've seen from good copies are stunning. And the lens feels and looks very well built and has some clever features to it. I felt the need to say that because I don't want to stop anyone from buying their lenses. Just be aware that you might get a decentered copy. And make sure you buy it at a store where return and exchange isn't as complicated. I think I just had some really bad luck and the way they handled my complaints was far from professional. But that can (and hopefully will) change.

02-02-2017, 04:43 AM	#19
ddamski Senior Member Join Date: Oct 2007 Location: Fribourg , Switzerland Photos: Gallery \| Albums Posts: 163	today it is the first time i hear about the decentering issues.. so i am little nervous with my 1st irix lens which arrives tomorrow

02-04-2017, 08:59 AM	#21
Driline Pentaxian Join Date: Dec 2012 Location: IOWA Where the Tall Corn Grows Photos: Gallery Posts: 3,705	Ahh....another rank and file member of the unpaid customer quality control department

02-06-2017, 12:50 PM	#22
kvetcha Forum Member Join Date: Apr 2016 Posts: 92	Well, just ordered myself a copy (Firefly) for interior shoots. Gotta say, this spooks me a little.

02-07-2017, 01:27 PM	#23
kvetcha Forum Member Join Date: Apr 2016 Posts: 92	Lens just arrived and, as I feared, it's pretty badly decentered. Here we go...

02-07-2017, 01:37 PM	#24
MJSfoto1956 Site Supporter Join Date: Dec 2013 Location: Boston Posts: 1,305	Fortunately, the Samyang 14mm + good lens profile is a proven winner for even architectural shots. Michael

02-07-2017, 02:11 PM	#25
kvetcha Forum Member Join Date: Apr 2016 Posts: 92	Originally posted by MJSfoto1956 Fortunately, the Samyang 14mm + good lens profile is a proven winner for even architectural shots. Michael I'm doing some interior test shots at f/13 and it's actually not bad. It's only wide open that it's obvious. For my usage, it might be sufficient. Distortion is blessedly low, almost imperceptible.

02-09-2017, 02:36 AM - 1 Like	#26
lennyl Forum Member Join Date: Mar 2013 Location: Slovakia Posts: 63	I got second copy IRIX 15/2,4 Fireflay. It is definitely better on f2,4 and now I'm happy :-) first copy of IRIX - very bad second copy of IRIX - excelent left and right sides of the down corners left and right sides of the upper corners higher resolution:

02-09-2017, 01:22 PM	#27
lennyl Forum Member Join Date: Mar 2013 Location: Slovakia Posts: 63	I repeated the test today with the second piece of IRIX, unbelievable: picture through window from work with CPL NiSi 95mm MC, at f2,4, left and right side from the corners at 1:1 f2,4 vs f11, perfect, vigneting on f2,4 is still visible of course... high resolution at f2,4 Do not be afraid to return IRIX and want a second piece :-)

02-10-2017, 02:01 AM	#29
istvan_sp New Member Join Date: Jan 2017 Posts: 4	Hi all, I got the new copy of IRIX 15mm and maybe it's a little bit better, but still decentered. Maybe the only difference is that the infinity is correctly set, so at infinity it's seems to be ok. I can't always see the problem, only on dark photos, and if I focus on something in the foreground at 3 meters, sometimes the right side of the background is blurry, and the left side is still sharp. At f4.5 it is razor sharp anyway, so I think I won't return it again, but I'll have to use a tripod for low light photos. It's also usable for night photography handheld at 2.4 but I have to be avare of this blurryness.

02-10-2017, 12:35 PM	#30
lennyl Forum Member Join Date: Mar 2013 Location: Slovakia Posts: 63	alpheios: I bought IRIX from Slovak local eshop megafoto.sk, 428euro (lens return was accepted within 15 days without giving any reason under our law to buy it on the internet).