Forgot Password
Pentax Camera Forums Home
 

Reply
Show Printable Version Search this Thread
02-23-2017, 03:52 AM   #61
Pentaxian
Na Horuk's Avatar

Join Date: Feb 2012
Location: Slovenia, probably
Photos: Gallery | Albums
Posts: 11,189
QuoteOriginally posted by Zygonyx Quote
Really HUGE a lens, like if 4 to 5 FA 43mm Limited were put together... and manual focus not so easy to use in such a range... definitely a No-Go for lots of people...
Yeah, especially when there are alternatives like Sigma 50mm and Tamron 45mm f1.8 and even Samyang 50mm. But its important it comes in Pentax K

02-23-2017, 05:56 AM   #62
Pentaxian




Join Date: Oct 2009
Location: North
Photos: Gallery
Posts: 4,053
This is good news.
The Irix 15/2.8 is a good lens.
I was skeptical in the beginning, but I'm glad this has been unfounded.

So if this 11mm can keep up the good standards of the 15mm, its really a welcome option for K-mount.
03-02-2017, 07:59 AM - 1 Like   #63
Site Supporter
Site Supporter
Patriot's Avatar

Join Date: Jun 2008
Location: Holy Land
Photos: Gallery | Albums
Posts: 906
Irix 11mm F4.0 officially announced
http://http://en.irixlens.com/press-centre/irix-11mm-f4-officially-announced

Recommended retail prices are:
635 EUR (tax incl) / 575 USD (net) for Irix Firefly
865 EUR (tax incl) / 775 USD (net) for Irix Blackstone
Both versions will be available with Canon EF and Nikon F mounts. The Pentax K-mount version will be released later.
03-06-2017, 05:48 AM   #64
Pentaxian
D1N0's Avatar

Join Date: May 2012
Location: ---
Photos: Gallery
Posts: 4,725
Ephotozine has done a review: Irix 11mm f/4 Firefly Review

03-06-2017, 03:39 PM   #65
Tas
Site Supporter
Site Supporter




Join Date: Aug 2013
Location: Brisbane, QLD
Photos: Gallery | Albums
Posts: 1,677
QuoteOriginally posted by D1N0 Quote
Ephotozine has done a review: Irix 11mm f/4 Firefly Review
Thanks for posting the review, I've been waiting on this lens to see how it performed and the review is quite positive.

Some interesting things I learnt are: no weather sealing on the front lens element, really strong field curvature (as you would expect), bokeh isn't too bad considering it's an UWA and the CA compared to the Laowa is pronounced. Indeed it's worth comparing the two: Venus Laowa 12mm f/2.8 Review if anyone is in the market for an ultra-wide rectilinear. The full res images tell the most about these two lenses and whichever one a person goes for I think they're going to be a nice tool to use.

For me the Venus is optically superior but there's features on the Irix that I particularly like (focusing aids/focus lock and some weather sealing) so I guess it's time to save some pennies and make a decision as to which of these two UWA I should aim for.

Tas
03-07-2017, 01:13 AM   #66
Pentaxian
Mistral75's Avatar

Join Date: Feb 2009
Location: Paris
Posts: 3,283
Another difference between the Irix 11mm and Laowa 12mm lenses: the former is an A-lens, the latter is not. This can matter to those whose first use of such a lens is to shoot landscapes at f/8 or f/11.
03-07-2017, 01:34 AM   #67
Site Supporter
Site Supporter
Sandy Hancock's Avatar

Join Date: Feb 2012
Location: Adelaide Hills, South Australia
Photos: Gallery | Albums
Posts: 6,286
I think I'll wait for the road-mapped Pentax fisheye. The DFA15-30 is plenty wide enough for now.
03-07-2017, 05:41 AM   #68
Pentaxian
Mistral75's Avatar

Join Date: Feb 2009
Location: Paris
Posts: 3,283
Another review of Irix 11mm f/4 (Firefly version), this time on Canon EOS 6D (24x36) and EOS M3 (mirrorless APS-C) with adapter.



03-07-2017, 08:09 AM   #69
Pentaxian
D1N0's Avatar

Join Date: May 2012
Location: ---
Photos: Gallery
Posts: 4,725
O I hate this guys voice
03-07-2017, 08:11 AM   #70
Pentaxian




Join Date: Dec 2011
Posts: 1,607
QuoteOriginally posted by Mistral75 Quote
Another difference between the Irix 11mm and Laowa 12mm lenses: the former is an A-lens, the latter is not. This can matter to those whose first use of such a lens is to shoot landscapes at f/8 or f/11.

That's nonsense. Look at my review here in the database with an image of the Laowa in K-mount.
The Laowa 12mm F2.8 does have an fully working A setting.


And as additional benefit using the filter holder it can take 95mm screw in filters as well as 100mm rectangular filters. I just recently tried a screw in CPL.


I do not think the Irix allows for that.
03-07-2017, 08:22 AM   #71
Pentaxian
Mistral75's Avatar

Join Date: Feb 2009
Location: Paris
Posts: 3,283
I stand corrected; however, please note that the description states: "Manual focus and manual aperture; operates like a Pentax M or K lens."

Venus Optics Laowa 12mm F2.8 Zero-D Lens Reviews - Miscellaneous Lenses - Pentax Lens Review Database

Does the Laowa have a chip and contacts to report the focal length and more?
03-07-2017, 08:59 AM   #72
Pentaxian




Join Date: Dec 2011
Posts: 1,607
QuoteOriginally posted by Mistral75 Quote
I stand corrected; however, please note that the description states: "Manual focus and manual aperture; operates like a Pentax M or K lens."

Venus Optics Laowa 12mm F2.8 Zero-D Lens Reviews - Miscellaneous Lenses - Pentax Lens Review Database

Does the Laowa have a chip and contacts to report the focal length and more?

I do not know who wrote that stuff about M or K lenses. It's wrong.


You can set the aperture using the camera back dial. Otherwise it's like an A lens: You still have to input the focal length in the camera (not really an issue with a prime). It does have some contacts. I do not know if that qualifies for "chip" though.


03-08-2017, 03:28 AM   #73
Site Supporter
Site Supporter
Zygonyx's Avatar

Join Date: Jun 2011
Location: Ile de France
Posts: 3,173
Interesting : one more reason to get one
03-17-2017, 04:13 PM   #74
Site Supporter
Site Supporter
todd's Avatar

Join Date: Jul 2008
Location: Basement
Photos: Gallery
Posts: 6,031
"a filter mount would almost certainly intrude on the field of view."
This could be a deal breaker for me.. I would want to at least be able to put an ND on there...

"9 rounded diaphragm blades result in a more circular aperture, for improved bokeh."
Why did they bother with this? The bokeh still looks to be avoided as much as possible.

"As mentioned, using the viewfinder or Live View is not really possible"
Why do they say this? Zooming in via Live View would work just fine when enough light, wouldn't it?

I had seen some sample images before on flickr that looked nice and made me get interested, but the samples in this Ephotozine review have me thinking what I never thought I'd find myself thinking, which is that it might actually be too wide for me... Fisheye might really be the only way for me to go at this wide a FOV. I need to go check out that 12mm now...
03-27-2017, 02:49 AM   #75
Senior Member
ddamski's Avatar

Join Date: Oct 2007
Location: Bern , Switzerland
Photos: Gallery | Albums
Posts: 143
just keep in mind about QC issues. I received two copies of the 15mm F2.4 and both of them were not good, either decentered, either infinity focus was not correctly adjusted. The guys from the service were friendly though
Reply

Bookmarks
  • Submit Thread to Facebook Facebook
  • Submit Thread to Twitter Twitter
  • Submit Thread to Digg Digg
Tags - Make this thread easier to find by adding keywords to it!
11mm, f/4, f/4 full frame, irix, irix 11mm f/4, pentax, pentax news, pentax rumors
Thread Tools Search this Thread
Search this Thread:

Advanced Search


Similar Threads
Thread Thread Starter Forum Replies Last Post
Irix 15mm f/2,4 for full frame K-mount Simen1 Pentax News and Rumors 457 03-04-2017 07:55 AM
24mp full frame K mount camera, possible? grahame Pentax Full Frame 193 08-23-2016 11:56 AM
DZOptics 35mm f/1.2 full-frame lens in K-mount panoguy Pentax SLR Lens Discussion 19 06-12-2016 01:51 PM
For Sale - Sold: Tamron 28-75mm 2.8 Full Frame K Mount EricBrown Sold Items 6 03-23-2016 06:58 AM



All times are GMT -7. The time now is 03:42 AM. | See also: NikonForums.com, CanonForums.com part of our network of photo forums!
  • Red (Default)
  • Green
  • Gray
  • Dark
  • Dark Yellow
  • Dark Blue
  • Old Red
  • Old Green
  • Old Gray
  • Dial-Up Style
Hello! It's great to see you back on the forum! Have you considered joining the community?
register
Creating a FREE ACCOUNT takes under a minute, removes ads, and lets you post! [Dismiss]
Top