Forgot Password
Pentax Camera Forums Home
 

Closed Thread
Show Printable Version Search this Thread
03-04-2018, 03:49 PM   #3031
Veteran Member




Join Date: Oct 2013
Photos: Albums
Posts: 316
Yes, only 3 primes next time.
Last in 2019.

03-04-2018, 03:50 PM - 2 Likes   #3032
Pentaxian
D1N0's Avatar

Join Date: May 2012
Location: ---
Photos: Gallery
Posts: 6,740
The sigma diagram looks like this:


The D FA* 50mm 1.4


Focus group is pretty similar. The difference is in the front group
03-04-2018, 03:50 PM   #3033
Site Supporter
Site Supporter
Pål Jensen's Avatar

Join Date: Dec 2007
Location: Norway
Photos: Albums
Posts: 4,349
35/1.4, 50/1.4 and 85/1.4
03-04-2018, 03:56 PM   #3034
Site Supporter
Site Supporter
ffking's Avatar

Join Date: Nov 2015
Location: Llanelli, Wales
Posts: 5,751
QuoteOriginally posted by Pål Jensen Quote
35/1.4, 50/1.4 and 85/1.4
Have I missed something? Do we know about a 35mm f/1.4?

03-04-2018, 03:59 PM   #3035
Senior Member




Join Date: Nov 2009
Location: manila
Posts: 149
Hope the last lens is the 35mm f1.4 that never saw the light of day since I believe it was only made in a prototype. I only read about it and that prototype was also a Zeiss design just like the 28mm f2 but I guess this time it will be a Pentax design.
03-04-2018, 04:26 PM   #3036
Site Supporter
Site Supporter




Join Date: Nov 2014
Location: Auckland
Posts: 247
QuoteOriginally posted by ffking Quote
Have I missed something? Do we know about a 35mm f/1.4?
Could be the "Large-aperture Wide-Angle Single Focus" on the roadmap.
03-04-2018, 04:33 PM   #3037
Pentaxian
Mistral75's Avatar

Join Date: Feb 2009
Location: Paris, France
Posts: 6,924
QuoteOriginally posted by ffking Quote
?????
HD Pentax-D FA★ 50mm f/1.4 SDM AW = first

HD Pentax-D FA★ 85mm f/1.4 = second

"Large Aperture Wide-Angle Single Focus Lens" (supposedly 35mm f/1.4) = third.

03-04-2018, 04:42 PM   #3038
Moderator
Site Supporter
Loyal Site Supporter
MarkJerling's Avatar

Join Date: May 2012
Location: Wairarapa, New Zealand
Photos: Gallery | Albums
Posts: 19,317
QuoteOriginally posted by Kunzite Quote
On the other forum, Asahiman posted an image with the optical diagram:
Re: Pentax DFA* 50mm F1.4 looks similar to Tokina 50mm F1.4: Pentax SLR Talk Forum: Digital Photography Review

15 elements, with no less of 8 elements in the focus group.
I see he says: "Everything of this lens is developed and patented by Pentax and Pentax produced. The Tokina version is made by Pentax and Tokina is using the Pentax patent."
03-04-2018, 04:44 PM   #3039
Pentaxian
Mistral75's Avatar

Join Date: Feb 2009
Location: Paris, France
Posts: 6,924
QuoteOriginally posted by MarkJerling Quote
I see he says: "Everything of this lens is developed and patented by Pentax and Pentax produced. The Tokina version is made by Pentax and Tokina is using the Pentax patent."
He later corrected his mistake:
QuoteOriginally posted by asahi man:
Sorry, little mistake....the Tokina is made by Tokina but uses the Pentax patent.

Different coatings.
03-04-2018, 05:11 PM   #3040
Moderator
Site Supporter
Loyal Site Supporter
MarkJerling's Avatar

Join Date: May 2012
Location: Wairarapa, New Zealand
Photos: Gallery | Albums
Posts: 19,317
QuoteOriginally posted by Mistral75 Quote
He later corrected his mistake:
Aha! Sorry, I did not see that.
03-04-2018, 05:14 PM   #3041
Loyal Site Supporter
Loyal Site Supporter
SSGGeezer's Avatar

Join Date: Jun 2017
Location: Indiana, U.S.
Photos: Gallery | Albums
Posts: 4,847
I don't have enough information to believe the comment about the DA zoom being a Tokina design though. I thought we had very different dimensions and such based on pre-production photos. And now Asahiman is posting here after a long absence? Interesting.
03-04-2018, 05:43 PM   #3042
Pentaxian
robjmitchell's Avatar

Join Date: Oct 2007
Location: Melbourne Aus
Posts: 1,776
QuoteOriginally posted by SSGGeezer Quote
I don't have enough information to believe the comment about the DA zoom being a Tokina design though. I thought we had very different dimensions and such based on pre-production photos. And now Asahiman is posting here after a long absence? Interesting.
Its a new design and is logically based upon one of the 11-xx Designs. That doesn't mean pentax hasn't helped tweak it with exotic glass elements, just that the patent remains with Tokina as it is based on an existing Tokina patent.
03-04-2018, 06:04 PM   #3043
Loyal Site Supporter
Loyal Site Supporter
SSGGeezer's Avatar

Join Date: Jun 2017
Location: Indiana, U.S.
Photos: Gallery | Albums
Posts: 4,847
QuoteOriginally posted by robjmitchell Quote
Its a new design and is logically based upon one of the 11-xx Designs. That doesn't mean pentax hasn't helped tweak it with exotic glass elements, just that the patent remains with Tokina as it is based on an existing Tokina patent.
I thought the Tokina was a different Focal length? I realize that Pentax is one of the different companies in trying to list exact focal lengths such as 77 and 43mm but at less than 20mm at the long end, fudging several mms of focal length is a high percentage of the total so run those numbers by me again please Rob. I thought that the stated designs were different.
03-04-2018, 06:28 PM - 2 Likes   #3044
Moderator
Man With A Camera
Loyal Site Supporter
Racer X 69's Avatar

Join Date: Jun 2010
Location: The Great Pacific Northwet, in the Land Between Canada and Mexico
Photos: Gallery | Albums
Posts: 26,397
QuoteOriginally posted by SSGGeezer Quote
And now Asahiman is posting here after a long absence? Interesting.


asahi man


Join Date: Oct 2013


Posts: 296 | Likes: 275


A wise man of few words, and many likes.
03-04-2018, 06:41 PM   #3045
Pentaxian
robjmitchell's Avatar

Join Date: Oct 2007
Location: Melbourne Aus
Posts: 1,776
QuoteOriginally posted by SSGGeezer Quote
I thought the Tokina was a different Focal length? I realize that Pentax is one of the different companies in trying to list exact focal lengths such as 77 and 43mm but at less than 20mm at the long end, fudging several mms of focal length is a high percentage of the total so run those numbers by me again please Rob. I thought that the stated designs were different.
Its differently shaped than either of the Tokina lenses so I'd say its definitely something new. We have no idea how much imput into the design pentax had. We do know its aimed a higher price point than the Tokina lenses so they can make something more advanced.
Closed Thread

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!
camera, drive, dslr, effort, f/1.4, f1.8, fa, im, k-1, lens, lenses, management, omega, opinion, pentax, pentax news, pentax rumors, people, photo, product, quality, ricoh, sigma, size, statistics, tamron, taste, theory, time
Thread Tools Search this Thread
Search this Thread:

Advanced Search


Similar Threads
Thread Thread Starter Forum Replies Last Post
Diglloyd reviews DA 35, DFA 50 and DFA 100 Macro lenses on the K-1 Matchete Pentax SLR Lens Discussion 19 06-09-2016 09:18 AM
Sigma 50/1.4 EX vs. Pentax FA 50/1.4 and DA 55/1.4 DonovanDwyer Pentax SLR Lens Discussion 17 01-24-2014 12:54 PM
For Sale - Sold: Sigma 10-20mm/4, Pentax FA 50/1.4, DFA 100mm/2.8 Macro Alam Sold Items 5 11-20-2011 03:02 PM



All times are GMT -7. The time now is 11:13 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