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

splash_fr · 09-15-2016, 01:24 AM

Nice test with very good Pictures. Unfortunately no telling about coma.

Zygonyx · 09-15-2016, 02:21 AM

I hope the next one will be there soon as well.

**WPRESTO** · 09-15-2016, 04:20 AM

Originally posted by Tas

Ta for posting that.

The review is not overly long but the distortion comparison with the 14-24 is what jumped out at me. I no longer need one of these but you have piqued my interest for this new lens and the upcoming reviews on higher res cameras.

Tas

The things that jumped out when I went through that review: 1) IQ was at least as good as the comparison Nikon at most apertures; 2) IQ was palpably superior at f22 where the Irix, inexplicably, seems to have avoided significant softening caused by diffraction. If the review is trustworthy, the Irix lives up to the manufacturer's hype.

awscreo · 09-15-2016, 06:30 AM

In any rate, there seem to be more and more choice for nice Uwa primes, which is good. Sy14 2.8, irix 14 2.4, laowa 12 2.8, laowa 15 4. If samyang releases 14 2.4 later on, that's quite a bit of choice in the segment. All we're missing is an Uwa f4 zoom, for people that dont need faster apertures.

Zygonyx · 09-15-2016, 06:42 AM - **1 Like**

IRIX 11mm F/4 was announced a few months ago.
This is the one i want.

awscreo · 09-15-2016, 07:01 AM

I'd be pretty happy with any of them, but now I'm particularly interested in the irix one and the new samyang 14 2.4 (if they ever release it for k mount)

beholder3 · 09-16-2016, 04:59 AM

Reviews:
IRIX 15mm f2.4 - review | Fotoinfo

You Tube

Google Translate

**WPRESTO** · 09-16-2016, 07:29 AM

Originally posted by beholder3

Reviews:

That's the same review whose link I posted above.

beholder3 · 09-17-2016, 12:09 AM

Originally posted by WPRESTO

That's the same review whose link I posted above.

"the"?

I guess you mean the first one of the three I posted.

repaap · 09-17-2016, 01:10 AM

It really seems to be quite good lens, Irix..let's see some shots, first LE(with filters) and then some with pixel sift!

BROO · 09-17-2016, 02:10 AM

There are a few Irix 15mm images on Flickr now. Worth a look. I am still not entirely convinced about this lens but general sharpness and distortion seem good. Seems a bit soft wide open in corners but that's okay for me. It may be found out for astro if you pixel peep. Would like a comparison with the Zeiss 15mm f2.8 and the new Samyang 14mm f2.4. I think it is good but......time will tell..

Interspieder · 09-17-2016, 03:24 AM

The reviewer who posted this videoreview already sent his Irixcopy back because of softness on the corners and many flares (in his opinion the flareresistance is comparable to Tamron 18-200).
And a german forumuser asked Irix about the Coma and got following answer:

"Hello M. , the coma is normal effect for ultra-wide lenses with large aperture. We put many efforts to make coma as low as it is possible. But as everybody can see, there is hard to make which is ideal in an every aspect. For some users who are interest in astrophotography it may be too high, while in daylight pictures it works superb."

I am still not sure.

**WPRESTO** · 09-17-2016, 03:37 AM

Does any know of a 21mm or wider FF lens that does NOT have soft corners when used wide open?

biz-engineer · 09-17-2016, 03:52 AM

Originally posted by WPRESTO

Does any know of a 21mm or wider FF lens that does NOT have soft corners when used wide open?

Yes, that's the DFA15-30.

MJKoski · 09-18-2016, 09:31 AM

15-30 needs f/4 for almost sharp corners. F/5.6 = sharp. Wide open goes with astro though.

09-17-2016, 02:10 AM	#296
BROO Veteran Member Join Date: Feb 2016 Photos: Gallery \| Albums Posts: 655	Try Flickr There are a few Irix 15mm images on Flickr now. Worth a look. I am still not entirely convinced about this lens but general sharpness and distortion seem good. Seems a bit soft wide open in corners but that's okay for me. It may be found out for astro if you pixel peep. Would like a comparison with the Zeiss 15mm f2.8 and the new Samyang 14mm f2.4. I think it is good but......time will tell..

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09-15-2016, 01:24 AM	#286
splash_fr Senior Member Join Date: May 2013 Posts: 178	Nice test with very good Pictures. Unfortunately no telling about coma.

09-15-2016, 02:21 AM	#287
Zygonyx Pentaxian Join Date: Jun 2011 Location: Ile de France Posts: 4,033	I hope the next one will be there soon as well.

09-15-2016, 04:20 AM	#288
WPRESTO Loyal Site Supporter Join Date: Aug 2010 Location: Massachusetts Photos: Gallery \| Albums Posts: 59,108	Originally posted by Tas Ta for posting that. The review is not overly long but the distortion comparison with the 14-24 is what jumped out at me. I no longer need one of these but you have piqued my interest for this new lens and the upcoming reviews on higher res cameras. Tas The things that jumped out when I went through that review: 1) IQ was at least as good as the comparison Nikon at most apertures; 2) IQ was palpably superior at f22 where the Irix, inexplicably, seems to have avoided significant softening caused by diffraction. If the review is trustworthy, the Irix lives up to the manufacturer's hype.

09-15-2016, 06:30 AM	#289
awscreo Veteran Member Join Date: May 2016 Photos: Gallery \| Albums Posts: 2,722	In any rate, there seem to be more and more choice for nice Uwa primes, which is good. Sy14 2.8, irix 14 2.4, laowa 12 2.8, laowa 15 4. If samyang releases 14 2.4 later on, that's quite a bit of choice in the segment. All we're missing is an Uwa f4 zoom, for people that dont need faster apertures.

09-15-2016, 06:42 AM - 1 Like	#290
Zygonyx Pentaxian Join Date: Jun 2011 Location: Ile de France Posts: 4,033	IRIX 11mm F/4 was announced a few months ago. This is the one i want.

09-15-2016, 07:01 AM	#291
awscreo Veteran Member Join Date: May 2016 Photos: Gallery \| Albums Posts: 2,722	I'd be pretty happy with any of them, but now I'm particularly interested in the irix one and the new samyang 14 2.4 (if they ever release it for k mount)

09-16-2016, 07:29 AM	#293
WPRESTO Loyal Site Supporter Join Date: Aug 2010 Location: Massachusetts Photos: Gallery \| Albums Posts: 59,108	Originally posted by beholder3 Reviews: That's the same review whose link I posted above.

09-17-2016, 12:09 AM	#294
beholder3 Pentaxian Join Date: Dec 2011 Posts: 3,112	Originally posted by WPRESTO That's the same review whose link I posted above. "the"? I guess you mean the first one of the three I posted.

09-17-2016, 01:10 AM	#295
repaap Pentaxian Join Date: Oct 2010 Photos: Gallery \| Albums Posts: 6,242	It really seems to be quite good lens, Irix..let's see some shots, first LE(with filters) and then some with pixel sift!

09-17-2016, 03:24 AM	#297
Interspieder Forum Member Join Date: Feb 2016 Posts: 76	The reviewer who posted this videoreview already sent his Irixcopy back because of softness on the corners and many flares (in his opinion the flareresistance is comparable to Tamron 18-200). And a german forumuser asked Irix about the Coma and got following answer: "Hello M. , the coma is normal effect for ultra-wide lenses with large aperture. We put many efforts to make coma as low as it is possible. But as everybody can see, there is hard to make which is ideal in an every aspect. For some users who are interest in astrophotography it may be too high, while in daylight pictures it works superb." I am still not sure.

09-17-2016, 03:37 AM	#298
WPRESTO Loyal Site Supporter Join Date: Aug 2010 Location: Massachusetts Photos: Gallery \| Albums Posts: 59,108	Does any know of a 21mm or wider FF lens that does NOT have soft corners when used wide open?

09-17-2016, 03:52 AM	#299
biz-engineer Pentaxian Join Date: Feb 2015 Photos: Gallery Posts: 12,232	Originally posted by WPRESTO Does any know of a 21mm or wider FF lens that does NOT have soft corners when used wide open? Yes, that's the DFA15-30.

09-18-2016, 09:31 AM	#300
MJKoski Veteran Member Join Date: Aug 2016 Posts: 1,784	15-30 needs f/4 for almost sharp corners. F/5.6 = sharp. Wide open goes with astro though.