Forgot Password
Pentax Camera Forums Home
 

Reply
Show Printable Version Search this Thread
09-01-2015, 04:58 PM   #1
Site Supporter
shaolen's Avatar

Join Date: May 2012
Location: Phoenix AZ
Posts: 749
why did they discontinue 25mm

Does anyone know why they discontinued this lens?

09-01-2015, 05:19 PM   #2
Pentaxian
Paul the Sunman's Avatar

Join Date: Aug 2011
Location: Melbourne
Photos: Gallery
Posts: 1,125
I think he's talking about the 645 lens. Originally introduced in 2011, and then modified with a different more restrictive permanent hood in 2012, and now dropped. There have been some mumblings about the company that provided the front element going out of business. Not sure of the full story.

A fabulous lens by all accounts, and sorely missed. It's not even on the 645 lens roadmap any more, so it doesn't seem there's any intention to bring it back anytime soon.

Last edited by Paul the Sunman; 09-01-2015 at 06:08 PM.
09-01-2015, 06:35 PM   #3
Pentaxian




Join Date: Nov 2011
Photos: Gallery | Albums
Posts: 3,615
QuoteOriginally posted by shaolen Quote
Does anyone know why they discontinued this lens?
SDM??
09-01-2015, 07:15 PM   #4
Administrator
Site Webmaster
Adam's Avatar

Join Date: Sep 2006
Location: Arizona
Photos: Gallery | Albums
Posts: 40,993
That's surprising, to be honest. Perhaps they're releasing yet another updated version.


Adam
PentaxForums.com Webmaster (Site Usage Guide | Site Help | My Photography)



PentaxForums.com's high server and development costs are user-supported. You can help cover those costs by donating. Or, buy your photo gear from our affiliates, Adorama, B&H Photo, or Topaz Labs, and get FREE Marketplace access - click here to see how! Trusted Pentax retailers:

09-01-2015, 08:05 PM   #5
Pentaxian
Paul the Sunman's Avatar

Join Date: Aug 2011
Location: Melbourne
Photos: Gallery
Posts: 1,125
QuoteOriginally posted by Adam Quote
That's surprising, to be honest. Perhaps they're releasing yet another updated version.
That would be necessary if there was an intention for the next 645 to have a larger sensor, closer to true 645, since the second version of the DA 25mm vignettes beyond the current 645D/Z sensor size due to the hood.
09-02-2015, 02:28 AM   #6
Administrator
Site Webmaster
Adam's Avatar

Join Date: Sep 2006
Location: Arizona
Photos: Gallery | Albums
Posts: 40,993
QuoteOriginally posted by Paul the Sunman Quote
That would be necessary if there was an intention for the next 645 to have a larger sensor, closer to true 645, since the second version of the DA 25mm vignettes beyond the current 645D/Z sensor size due to the hood.
I guess they could go a bit bigger, but you don't exactly see many complaints about the size of the existing sensor

Adam
PentaxForums.com Webmaster (Site Usage Guide | Site Help | My Photography)



PentaxForums.com's high server and development costs are user-supported. You can help cover those costs by donating. Or, buy your photo gear from our affiliates, Adorama, B&H Photo, or Topaz Labs, and get FREE Marketplace access - click here to see how! Trusted Pentax retailers:

09-02-2015, 02:35 AM   #7
Veteran Member
Kolor-Pikker's Avatar

Join Date: Dec 2014
Posts: 333
The 25mm simply wasn't very good. Starting at only 3mm longer, the 28-45mm is sharper, is a zoom, has stabilization, only f/0.5 slower across the range, takes front filters, and debuted at the same price the 25mm originally did - putting it to complete shame.

What Pentax needs is a super-wide lens that's specifically formulated for the 33x44 format, possibly in tilt-shift flavor, it would sway a lot of Canon owners who still use the system for lenses like the 17/24TS-E. The 11-24mm is an insane lens and I don't see Pentax being able to match them even with a prime lens.
09-02-2015, 03:42 AM   #8
Loyal Site Supporter




Join Date: Mar 2009
Location: Southern Indiana
Photos: Gallery
Posts: 14,969
I thought the issue was that their source for some of the lens elements went bankrupt and so they couldn't continue to produce the lens.

09-02-2015, 07:42 AM   #9
Veteran Member
Kolor-Pikker's Avatar

Join Date: Dec 2014
Posts: 333
Even if the issue was "technical" in nature, if this is justification enough for them to go back to the drawing board, I'm fine with it.

Last edited by Kolor-Pikker; 09-02-2015 at 07:48 AM.
09-02-2015, 02:23 PM - 1 Like   #10
Senior Member




Join Date: Apr 2014
Location: Texas
Posts: 110
I never thought the sample images Pentax distributed from the 25 were very compelling. Here's one.


http://www.cameraegg.org/wp-content/uploads/2014/04/Pentax-645Z-Sample-Image-4.jpg


I am happy with the 28-45. I bought a 5DsR to cover the 11-24 range (on the list to purchase) and the 150-600 range. The 645z will be the meat of the sandwich.


OTOH, Thomas Brown does pretty well with the lens.
09-02-2015, 04:52 PM   #11
Site Supporter




Join Date: Sep 2011
Location: Richland, Washington, USA
Posts: 873
QuoteOriginally posted by rfkiii Quote
OTOH, Thomas Brown does pretty well with the lens.
2nd that. Wish I could afford the 28-45, but getting the camera tapped me. Gotta live with an A 35 for awhile.
09-03-2015, 08:56 PM   #12
Pentaxian
Thomasbrowphoto's Avatar

Join Date: May 2014
Location: NSW, Australia
Posts: 335
I'm not sure if they will ever be replacing the DA25mm lens. As stated above its not on the road map, and I can see it could be a tad too close to the 28-45mm. I feel there is definitely a need for a wider lens than the 28mm and for me personally 28mm is too tight for the images I like to make. The 25mm is definitely not perfect, but is no slouch either. Apart from the severe CA in bright scenes and slight softening/smudging on the corners.. And some samples even falling apart. It sits on my 645Z almost all of the time. Maybe one day they will give us a new wide lens. But I don't think it will be in the near future.
09-03-2015, 10:15 PM   #13
Pentaxian
mikeSF's Avatar

Join Date: Jan 2009
Location: East Bay Area, CA
Photos: Gallery
Posts: 5,541
I'm glad I got mine before they stopped making them and I find it a great lens. Still hoping for something wider for tight seascapes.

Country Livin' (pt 2)

The Hannah Nicole Show

Last edited by mikeSF; 09-03-2015 at 10:26 PM.
09-08-2015, 10:12 AM   #14
Senior Member




Join Date: Feb 2013
Posts: 111
Well, it is a bit sad. Especially if you got one of the DFA from Japan and are using both film and a 645D or Z. When using a film body, it gives a much wider view again, so you basically have two primes in one. The 28-45 might be sharper, especially wide open, but is not fully covering 41x56mm
09-08-2015, 11:09 AM   #15
Veteran Member
Kolor-Pikker's Avatar

Join Date: Dec 2014
Posts: 333
QuoteOriginally posted by donesteban Quote
Well, it is a bit sad. Especially if you got one of the DFA from Japan and are using both film and a 645D or Z. When using a film body, it gives a much wider view again, so you basically have two primes in one. The 28-45 might be sharper, especially wide open, but is not fully covering 41x56mm
Pentax can either continue making full frame lenses that may or may not be useful in the future, or optimize the optics for better performance today, kind of a trade off going on here.

With a telephoto lens this isn't as much of a problem, since you're not losing a lot of performance, but in a wide, they could easily make the lens wider, have a larger aperture, and smaller/lighter all at the same time by catering to 33x44. The hood will also cover the correct framing.

While the 25mm wasn't outright bad and many people did make good photos with it, you can say that a lot of wide-angle lenses for a lot of systems aren't bad either, meaning that with the Pentax system all you're getting are the bonuses offered by the improved sensor tech. Pentax needs to get that every new lens has to push the limits of the sensor so that the system as a whole would be more desirable, rather just for getting that one extra stop of DR over a D810.

For instance, the Sony/Zeiss FE 35/1.4 is an awesome lens even used wide open, and the A7RII is a spitting distance away from the performance offered by the 645Z. Why doesn't the Z have something like it? A 45mm f/2 lens would be very welcomed by many I can imagine, certainly by me.

Last edited by Kolor-Pikker; 09-08-2015 at 11:28 AM.
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!
645d, 645z, camera, medium format
Thread Tools Search this Thread
Search this Thread:

Advanced Search


Similar Threads
Thread Thread Starter Forum Replies Last Post
Why did Pentax drop PEF, then reintroduce it? MD Optofonik Pentax DSLR Discussion 12 05-04-2015 11:05 AM
Pentax, why can't they market more effectively ? lesmore49 General Photography 18 10-21-2014 02:46 PM
why did'nt they know? saudiboypalaboy Pentax SLR Lens Discussion 10 10-05-2012 10:21 PM
Why did I order the D7000. Why? tbirdas Non-Pentax Cameras: Canon, Nikon, etc. 41 02-26-2011 02:43 AM
Did I revive these, or are they a total loss? m8o Photo Critique 11 02-01-2008 04:31 AM



All times are GMT -7. The time now is 08:42 AM. | See also: NikonForums.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