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

**Weevil** · 11-04-2016, 08:25 PM

They announced today that their Pentax K-Mount version was available on the EU store site...

Firefly 475 euros
Blackstone 695 euros

Irix 15mm f/2.4 Blackstone

Last edited by Weevil; 11-08-2016 at 08:35 PM.

Zygonyx · 11-05-2016, 12:55 AM

That's cool

sculptormic · 11-05-2016, 05:32 AM

Good news, I just ordered one.

ranchy · 11-08-2016, 07:47 AM - **3 Likes**

Arrived in SG! Irix 15mm F2.4 Firefly.

Feel good on the K1, have Aperture setting display on the camera.

Some photo of the lens alone and on the K1.

Bernard Yeo · 11-08-2016, 07:58 AM

Originally posted by ranchy

Arrived in SG! Irix 15mm F2.4 Firefly.

Feel good on the K1, have Aperture setting display on the camera.

Some photo of the lens alone and on the K1.

Nice one.. looking forward to your images!!

sculptormic · 11-08-2016, 10:24 AM

Congrats! Mine will be here tomorrow.

MJKoski · 11-08-2016, 10:41 AM

Cool. Now a question: Are you able to lock the focus ring without moving the focus?

**Weevil** · 11-08-2016, 11:23 PM

Originally posted by Bernard Yeo

Nice one.. looking forward to your images!!

Indeed!
As a matter of facts, I just created a new Lens Club thread for this Lens manufacturer...

https://www.pentaxforums.com/forums/10-pentax-slr-lens-discussion/333494-pent...ur-photos.html

It will be the place to show us your photos!

Cant wait to see your results!

ranchy · 11-09-2016, 06:24 AM

Originally posted by Bernard Yeo

Nice one.. looking forward to your images!!

Thanks, I think I will look forward to yours more!!

Originally posted by sculptormic

Congrats! Mine will be here tomorrow.

Congrats too... I have no time to try the lens .. Can't wait for the weekends to come

Originally posted by MJKoski

Cool. Now a question: Are you able to lock the focus ring without moving the focus?

Erm, I can lock the focus with a separate lock knob. Not sure did it move the focus thought. Is that what you are checking?

Originally posted by Weevil

Indeed!
As a matter of facts, I just created a new Lens Club thread for this Lens manufacturer...

https://www.pentaxforums.com/forums/10-pentax-slr-lens-discussion/333494-pent...ur-photos.html

It will be the place to show us your photos!

Cant wait to see your results!

Cool... I will try to share when I have time for photography this weekends.
Don't mind my result, I'm not strong at landscape. :P

MJKoski · 11-09-2016, 11:06 AM

Yes. One finnish user reported that locking focus moves the actual focus thus rendering the lock function useless.

**Erictator** · 11-09-2016, 11:26 AM - **1 Like**

Originally posted by MJKoski

Yes. One finnish user reported that locking focus moves the actual focus thus rendering the lock function useless.

Well... I think that might be overstating the case just a little.

I mean, yes, it does eliminate ONE use for focus lock... But, if all you are doing is setting the hyperfocal distance to x# of FT @ Fxx and want to run around with it in that mode, the fact that it creeps a hair when you lock it, isn't really relevant to most people.

If you want to set at Infinity before you do some night sky shooting, and you are holding pressure against the infinity stop, the lock shouldn't let it creep, or if you just want to retract the focus to minimal lens size or to push the rear element back for cleaning or for storage (does this one change size?) or a polarizer or other filter and lock it, then that is fine too. Shouldn't really effect Catch in focus use much if at all either.

About the only thing I could picture it being an issue with is using it from a tripod on stationary objects at fairly close range or maybe for focus stacking?

Anywho, sounds like a good thing to know, but not nearly a deal breaker for most people.

Eric

awscreo · 11-09-2016, 11:55 AM

One thing to note - it's a gorgeous looking lens

MJKoski · 11-09-2016, 02:26 PM

Infinity focus was the case. But if it can be adjusted anyway maybe one could get hard stop set to infinity?

ranchy · 11-11-2016, 08:30 AM - **1 Like**

Originally posted by MJKoski

Yes. One finnish user reported that locking focus moves the actual focus thus rendering the lock function useless.

Oh okay, tested mine. It works well. The lock focus does not move the focus ring while locking it....

MJKoski · 11-11-2016, 08:34 AM

All right, it means there is variation in mechanical contruction. Optical unkown at this point.

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11-04-2016, 08:25 PM	#421
Weevil Site Supporter Join Date: May 2012 Location: Near Montréal, Québec Photos: Gallery Posts: 4,445	They announced today that their Pentax K-Mount version was available on the EU store site... Firefly 475 euros Blackstone 695 euros Irix 15mm f/2.4 Blackstone Last edited by Weevil; 11-08-2016 at 08:35 PM.

11-05-2016, 12:55 AM	#422
Zygonyx Pentaxian Join Date: Jun 2011 Location: Ile de France Posts: 4,033	That's cool

11-05-2016, 05:32 AM	#423
sculptormic Veteran Member Join Date: Dec 2012 Location: Amsterdam Posts: 469	Good news, I just ordered one.

11-08-2016, 07:47 AM - 3 Likes	#424
ranchy Veteran Member Join Date: Jan 2010 Photos: Gallery Posts: 570	Arrived in SG! Irix 15mm F2.4 Firefly. Feel good on the K1, have Aperture setting display on the camera. Some photo of the lens alone and on the K1.

11-08-2016, 07:58 AM	#425
Bernard Yeo Forum Member Join Date: Feb 2007 Location: Singapore Posts: 62	Originally posted by ranchy Arrived in SG! Irix 15mm F2.4 Firefly. Feel good on the K1, have Aperture setting display on the camera. Some photo of the lens alone and on the K1. Nice one.. looking forward to your images!!

11-08-2016, 10:24 AM	#426
sculptormic Veteran Member Join Date: Dec 2012 Location: Amsterdam Posts: 469	Congrats! Mine will be here tomorrow.

11-08-2016, 10:41 AM	#427
MJKoski Veteran Member Join Date: Aug 2016 Posts: 1,784	Cool. Now a question: Are you able to lock the focus ring without moving the focus?

11-08-2016, 11:23 PM	#428
Weevil Site Supporter Join Date: May 2012 Location: Near Montréal, Québec Photos: Gallery Posts: 4,445	Originally posted by Bernard Yeo Nice one.. looking forward to your images!! Indeed! As a matter of facts, I just created a new Lens Club thread for this Lens manufacturer... https://www.pentaxforums.com/forums/10-pentax-slr-lens-discussion/333494-pent...ur-photos.html It will be the place to show us your photos! Cant wait to see your results!

11-09-2016, 06:24 AM	#429
ranchy Veteran Member Join Date: Jan 2010 Photos: Gallery Posts: 570	Originally posted by Bernard Yeo Nice one.. looking forward to your images!! Thanks, I think I will look forward to yours more!! Originally posted by sculptormic Congrats! Mine will be here tomorrow. Congrats too... I have no time to try the lens .. Can't wait for the weekends to come Originally posted by MJKoski Cool. Now a question: Are you able to lock the focus ring without moving the focus? Erm, I can lock the focus with a separate lock knob. Not sure did it move the focus thought. Is that what you are checking? Originally posted by Weevil Indeed! As a matter of facts, I just created a new Lens Club thread for this Lens manufacturer... https://www.pentaxforums.com/forums/10-pentax-slr-lens-discussion/333494-pent...ur-photos.html It will be the place to show us your photos! Cant wait to see your results! Cool... I will try to share when I have time for photography this weekends. Don't mind my result, I'm not strong at landscape. :P

11-09-2016, 11:06 AM	#430
MJKoski Veteran Member Join Date: Aug 2016 Posts: 1,784	Yes. One finnish user reported that locking focus moves the actual focus thus rendering the lock function useless.

11-09-2016, 11:26 AM - 1 Like	#431
Erictator Site Supporter Join Date: Jul 2011 Photos: Gallery \| Albums Posts: 3,345	Originally posted by MJKoski Yes. One finnish user reported that locking focus moves the actual focus thus rendering the lock function useless. Well... I think that might be overstating the case just a little. I mean, yes, it does eliminate ONE use for focus lock... But, if all you are doing is setting the hyperfocal distance to x# of FT @ Fxx and want to run around with it in that mode, the fact that it creeps a hair when you lock it, isn't really relevant to most people. If you want to set at Infinity before you do some night sky shooting, and you are holding pressure against the infinity stop, the lock shouldn't let it creep, or if you just want to retract the focus to minimal lens size or to push the rear element back for cleaning or for storage (does this one change size?) or a polarizer or other filter and lock it, then that is fine too. Shouldn't really effect Catch in focus use much if at all either. About the only thing I could picture it being an issue with is using it from a tripod on stationary objects at fairly close range or maybe for focus stacking? Anywho, sounds like a good thing to know, but not nearly a deal breaker for most people. Eric

11-09-2016, 11:55 AM	#432
awscreo Veteran Member Join Date: May 2016 Photos: Gallery \| Albums Posts: 2,722	One thing to note - it's a gorgeous looking lens

11-09-2016, 02:26 PM	#433
MJKoski Veteran Member Join Date: Aug 2016 Posts: 1,784	Infinity focus was the case. But if it can be adjusted anyway maybe one could get hard stop set to infinity?

11-11-2016, 08:30 AM - 1 Like	#434
ranchy Veteran Member Join Date: Jan 2010 Photos: Gallery Posts: 570	Originally posted by MJKoski Yes. One finnish user reported that locking focus moves the actual focus thus rendering the lock function useless. Oh okay, tested mine. It works well. The lock focus does not move the focus ring while locking it....

11-11-2016, 08:34 AM	#435
MJKoski Veteran Member Join Date: Aug 2016 Posts: 1,784	All right, it means there is variation in mechanical contruction. Optical unkown at this point.