Forgot Password
Pentax Camera Forums Home
 

Reply
Show Printable Version Search this Thread
02-06-2015, 05:53 AM   #1
Veteran Member
sterretje's Avatar

Join Date: Dec 2008
Location: Roodepoort, South Africa
Photos: Gallery | Albums
Posts: 3,534
KAF3 mount; bye bye screw-drive?

If the spec at photorumors is correct, the camera will have a KAF3 mount. Bye bye screw drive lenses?

link: Rumored Pentax full frame DSLR camera specifications | Photo Rumors

02-06-2015, 05:57 AM   #2
Ash
Community Manager
Loyal Site Supporter
Ash's Avatar

Join Date: Mar 2007
Location: Toowoomba, Queensland
Photos: Gallery | Albums
Posts: 22,678
Highly doubt it. Couldn't cripple a top end camera so as to not permit use of FA Ltds or DA lenses without DC motor.
02-06-2015, 06:01 AM   #3
Pentaxian




Join Date: Dec 2013
Location: New Jersey
Posts: 882
QuoteOriginally posted by sterretje Quote
If the spec at photorumors is correct, the camera will have a KAF3 mount. Bye bye screw drive lenses?

link: Rumored Pentax full frame DSLR camera specifications | Photo Rumors
This rumor is definitely wrong. Unless they issue a new mount, I do not think ricoh will give up support of legacy FF lenses...

From the 3d printed photo, you can find FA 31mm is there also.
02-06-2015, 06:09 AM   #4
Loyal Site Supporter
UncleVanya's Avatar

Join Date: Jul 2014
Photos: Gallery | Albums
Posts: 9,493
I think they will add contacts to the new DF A series lenses in order to allow the body to automatically set crop and full frame modes. I fully expect to be able to also manually set this. I'm also thinking that these new lenses appear to have optical shake reduction and they will need a way to tell the camera that this is enabled so it can shut off in body stabilization in that situation.

None of which would indicate that the kaf3 mount is losing screw drive.

02-06-2015, 06:10 AM   #5
Veteran Member
sterretje's Avatar

Join Date: Dec 2008
Location: Roodepoort, South Africa
Photos: Gallery | Albums
Posts: 3,534
Original Poster
QuoteOriginally posted by starjedi Quote
From the 3d printed photo, you can find FA 31mm is there also.
No, that's the new HDWRDC31Ltd Camera will, by the way, come with HDWRDC43Ltd as standard lens.
02-06-2015, 06:27 AM - 1 Like   #6
Pentaxian
Na Horuk's Avatar

Join Date: Feb 2012
Location: Slovenia, probably
Photos: Gallery | Albums
Posts: 10,315
The following is fiction.
Ricoh: "They want FF. Okay, let's give them FF. But we want something in return. We can remove screwdrive from the camera and they will have to buy all new lenses. Imagine the profit! And if they want to use old lenses that don't profit us, they can use the crop sensor cameras."
02-06-2015, 06:30 AM - 1 Like   #7
Site Supporter




Join Date: Jan 2008
Location: Connecticut, USA
Posts: 809
Looks like just a rumour with guessing going on. I know if screw drive lenses could not be used, that would immediately kill any idea of me buying the camera.
02-06-2015, 06:33 AM - 1 Like   #8
arv
Site Supporter




Join Date: Aug 2010
Photos: Albums
Posts: 374
QuoteOriginally posted by Na Horuk Quote
The following is fiction.
Ricoh: "They want FF. Okay, let's give them FF. But we want something in return. We can remove screwdrive from the camera and they will have to buy all new lenses. Imagine the profit! And if they want to use old lenses that don't profit us, they can use the crop sensor cameras."
"... or they can use Sony A7(x)..."
Neah.

02-06-2015, 06:33 AM   #9
Loyal Site Supporter




Join Date: Mar 2009
Location: Southern Indiana
Photos: Gallery
Posts: 14,931
Not going to happen.

If screw drive eventually disappears, it will be lost first on the lowest end cameras, not on the upper end ones. Just look at Nikon. People don't complain about lack of in body focus motors on entry level cameras, but if they dropped it on the D800, Nikonians would be up in arms.
02-06-2015, 06:34 AM   #10
Pentaxian
hoopsontoast's Avatar

Join Date: Jul 2013
Location: Oxfordshire
Posts: 822
I assume its taken from the two new D-FA lenses that have: Mount = KAF3 in the specifications, and its just copied from there.

http://www.ricoh-imaging.co.uk/en/group/14/product/21340/body/specifications/Photo-Lenses.html
02-06-2015, 06:40 AM   #11
Site Supporter
boriscleto's Avatar

Join Date: Dec 2009
Location: Liverpool, NY
Photos: Gallery
Posts: 12,284
QuoteOriginally posted by UncleVanya Quote
I think they will add contacts to the new DF A series lenses in order to allow the body to automatically set crop and full frame modes.
why would they need to add an extra contact? The lens already has it's own identifier in the chip, and that data is passed to the camera through the data contact.
02-06-2015, 06:42 AM   #12
Loyal Site Supporter
UncleVanya's Avatar

Join Date: Jul 2014
Photos: Gallery | Albums
Posts: 9,493
QuoteOriginally posted by boriscleto Quote
why would they need to add an extra contact? The lens already has it's own identifier in the chip, and that data is passed to the camera through the data contact.
Doh. You are right. What about the optical stabilization?
02-06-2015, 06:48 AM   #13
Loyal Site Supporter




Join Date: Mar 2009
Location: Southern Indiana
Photos: Gallery
Posts: 14,931
QuoteOriginally posted by boriscleto Quote
why would they need to add an extra contact? The lens already has it's own identifier in the chip, and that data is passed to the camera through the data contact.
I thought the extra contact had to do with the new auto focus modes that are going to be usable on the new glass, but I guess not, if the K3 is going to have a firmware update that allows them.
02-06-2015, 06:48 AM   #14
Site Supporter
boriscleto's Avatar

Join Date: Dec 2009
Location: Liverpool, NY
Photos: Gallery
Posts: 12,284
QuoteOriginally posted by UncleVanya Quote
Doh. You are right. What about the optical stabilization?
The focal length is also passed to the camera. Non AF lenses don't have a chip, that is why you have ro manually input the focal length for SR. But there aren't any manual focus DA lenses...I,mmnot sure about the Samyang lenses, but they are FF anyway.
02-06-2015, 06:48 AM   #15
Loyal Site Supporter




Join Date: Mar 2009
Location: Southern Indiana
Photos: Gallery
Posts: 14,931
QuoteOriginally posted by UncleVanya Quote
Doh. You are right. What about the optical stabilization?
Don't Sigma lenses with OS function fine on current k mount, 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!
24x36mm, camera, full-frame, kaf3, mount, pentax
Thread Tools Search this Thread
Search this Thread:

Advanced Search


Similar Threads
Thread Thread Starter Forum Replies Last Post
K-Mount or A-Mount to E-Mount Adapters with AF? reivax Non-Pentax Cameras: Canon, Nikon, etc. 5 01-01-2015 09:35 AM
KAF3, KAF2, KAF or KA mount ...! Roadhouse Pentax SLR Lens Discussion 2 07-28-2012 11:48 PM
Sigma KAF3 mount lenses on Pentax film Cameras c3031486 Pentax Film SLR Discussion 1 07-25-2012 02:36 AM
KAF3 mount???? rvannatta Pentax K-01 7 02-02-2012 05:52 PM
KAF3 Mount Question... Thales454 Pentax SLR Lens Discussion 2 05-06-2011 03:39 PM



All times are GMT -7. The time now is 01:43 PM. | 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