Forgot Password
Pentax Camera Forums Home
 

Reply
Show Printable Version Search this Thread
05-12-2016, 05:30 AM   #241
Veteran Member
Caat's Avatar

Join Date: Feb 2009
Location: United Kingdom
Photos: Albums
Posts: 897
Does anyone know where the "K-mount Specification" is written down and exactly what it precisely covers?

05-12-2016, 05:48 AM   #242
Veteran Member
distudio's Avatar

Join Date: Jul 2007
Location: Sydney
Photos: Albums
Posts: 448
QuoteOriginally posted by Caat Quote
Does anyone know where the "K-mount Specification" is written down and exactly what it precisely covers?
It's a crock anyway, they have screwed up in the past. The first Pentax body to implement that hideous prism overhang was the K10D from recollection.

That lovely bit of jutting plastic wouldn't allow the A*200/4 macro to rotate to portrait mode whilst the pair was mounted on the supplied tripod mount as the set screws on the mount collar collided with the prism overhang, they didn't offer to fix that. It also made using the aperture ring less than comfortable.
05-12-2016, 05:53 AM - 1 Like   #243
Loyal Site Supporter
Rupert's Avatar

Join Date: Sep 2006
Location: Texas
Photos: Gallery | Albums
Posts: 24,541
How many out there have an actual problem with a Sigma lens on the list?

I have a Bigma 50-500 HSM OS and though it is a very close fit there is no scratching or difficulty in mounting/removing. Have others actually checked their Sigma lenses for a problem?

I can tell you for certain I would live with a tiny scratch before I would send off my Bigma for repair and be without it for who knows how long. A tiny scratch is nothing. I intend to keep my K1 and use the damn thing until it wears out...or I do, a little scratch matters.....not at all! I take pictures, I don't collect pristine bodies as a hobby.

So would you send her back to the factory if she had a little scratch? You'd be the only one to know it anyhow....you lucky devil!

Name:  Model.jpg
Views: 3021
Size:  123.2 KB


Regards!

Last edited by BigMackCam; 05-12-2016 at 06:36 AM. Reason: Inappropriate content.
05-12-2016, 05:59 AM - 1 Like   #244
Emperor and Senpai
VoiceOfReason's Avatar

Join Date: Jun 2010
Location: Nashville, IN
Posts: 5,334
You need a DFA 150-450 Rupert, and I need the subject of your last picture.

05-12-2016, 06:11 AM   #245
Loyal Site Supporter
G and T's Avatar

Join Date: Aug 2011
Location: Langwarrin Australia
Photos: Gallery
Posts: 339
QuoteOriginally posted by Rupert Quote
So would you send her back to the factory if she had a little scratch? You'd be the only one to know it anyhow....you lucky devil!

No need to send her back I think she's OEM.
Thanks Rupert for putting some sense in this thread.

Glenn

Last edited by BigMackCam; 05-12-2016 at 11:07 AM. Reason: To remove content from quoted post
05-12-2016, 06:27 AM   #246
Loyal Site Supporter




Join Date: Aug 2011
Photos: Albums
Posts: 1,836
QuoteOriginally posted by Rupert Quote
would live with a tiny scratch before I would send off my Bigma for repa
exactly! I even thought sanding the camera cover a little bit if necessary. The mark on the pictures is very minor so I believed I didn't have to sand down much. But actually my 85/1.4 does not scratch k1.
I am not worrying about it unless the camera stops the lens from mounting or the force might damage the mount on camera and lens.
05-12-2016, 06:30 AM   #247
Senior Member




Join Date: Nov 2011
Location: Hampshire UK
Posts: 280
QuoteOriginally posted by BigMackCam Quote
But, that said, in my original reply to your post I hadn't realised what @monchrome stated - ie. that the Sigma lenses are outside the published K-mount specification. If that is the case, then Sigma has technically mis-sold their K-mount lenses as K-mount compatible. Sounds like Sigma is going to make good on the modifications, though, which is great news.
That was exactly the main point of my post, and an earlier post I made last night!

Either Sigma knew what the specification was and chose to go outside it, or they did not know the full specification (perhaps because they wouldn't pay Pentax for it) and had to guess but guessed wrong. Either way, I think they know they messed up and will fix the lenses for free though it may take quite a long time.
05-12-2016, 06:35 AM - 2 Likes   #248
Loyal Site Supporter
Bengan's Avatar

Join Date: Nov 2012
Location: Stockholm
Photos: Gallery | Albums
Posts: 365
Some 15 pages ago I grew tired of the "who's to blame" discussion. We are facing a situation that may or may not be a real issue. I agree with a all of you who say that you can live with a tiny scratch. If a camera doesn't get scratches, it's probably not used at all. What I'm worried about is if this contact issue will affect functionality. So more from those of you who has got the K-1 and listed lenses. Particularly you who have experienced functionality problems with your Sigmas.


Personally I'm all for third party manufacturers and open standards. It's a significant part of what drives development and Sigma fills holes in Pentax's product line (booth regarding spec and price).

05-12-2016, 06:49 AM - 1 Like   #249
Senior Moderator
Loyal Site Supporter
Parallax's Avatar

Join Date: Apr 2008
Location: South Dakota
Photos: Gallery
Posts: 15,507
QuoteOriginally posted by G and T Quote
Thanks Rupert for putting some sense in this thread.
Okay, now this thread is getting scary.
When Rupert's posts are the [comparatively] sensible ones the thread has gone over the top.
05-12-2016, 06:59 AM   #250
Pentaxian
noelpolar's Avatar

Join Date: Oct 2013
Location: Goolwa, SA
Posts: 3,065
QuoteOriginally posted by Parallax Quote
Okay, now this thread is getting scary.
When Rupert's posts are the [comparatively] sensible ones the thread has gone over the top.
and his K-1 sqirrels are looking much nicer....

anyway..... my Sigma 70-200/2.8 HSM OS blah blah is working fine and hasn't scratched..... so I'm moving on
05-12-2016, 07:02 AM - 2 Likes   #251
Loyal Site Supporter
G and T's Avatar

Join Date: Aug 2011
Location: Langwarrin Australia
Photos: Gallery
Posts: 339
QuoteOriginally posted by Parallax Quote
Okay, now this thread is getting scary. When Rupert's posts are the [comparatively] sensible ones the thread has gone over the top
I'm happy he posted a picture of a girl not a squirrel.

Glenn
05-12-2016, 07:13 AM   #252
Moderator
Loyal Site Supporter
BigMackCam's Avatar

Join Date: Mar 2010
Location: North East of England
Posts: 6,285
QuoteOriginally posted by Dave L Quote
That was exactly the main point of my post, and an earlier post I made last night!

Either Sigma knew what the specification was and chose to go outside it, or they did not know the full specification (perhaps because they wouldn't pay Pentax for it) and had to guess but guessed wrong. Either way, I think they know they messed up and will fix the lenses for free though it may take quite a long time.
Gotcha. Apologies for mis-reading it - I'll go back to sleep now!
05-12-2016, 07:16 AM   #253
Pentaxian
reeftool's Avatar

Join Date: Dec 2007
Location: Upstate New York
Photos: Gallery | Albums
Posts: 8,095
QuoteOriginally posted by Rupert Quote
I can tell you for certain I would live with a tiny scratch before I would send off my Bigma for repair and be without it for who knows how long. A tiny scratch is nothing. I intend to keep my K1 and use the damn thing until it wears out...or I do, a little scratch matters.....not at all! I take pictures, I don't collect pristine bodies as a hobby.
I never even try to sell one of my cameras because they look pretty rough after I have used them for a while. My K5 has survived a motorcycle crash and is still working although not to pretty looking anymore. If that little scratch is all this is going to amount to, it won't interfere in any way of me purchasing a K1 in the future. I own a couple of the lenses on the list. I would be much more worried that the stress in the mount area might cause some problems down the road in a year or so which is a good reason I would think to get the lenses fixed.
05-12-2016, 07:18 AM   #254
Junior Member




Join Date: Apr 2016
Photos: Gallery
Posts: 43
I have the SIGMA 35mm f1.4 and indeed I can see a tiny scratch on top of the mount. I'm guessing this is due to the white blob sticking out of the lens to align the lens and the mount correctly. The scratch is not deep and once done the blob doesn't touch the body anymore. I had no contact/freeze issue with my K-1, and the Sigma look amazing in this body.
05-12-2016, 08:24 AM   #255
Pentaxian
Not a Number's Avatar

Join Date: Mar 2012
Location: Venice, CA
Posts: 4,107
QuoteOriginally posted by FtYoU Quote
The scratch is not deep and once done the blob doesn't touch the body anymore. I had no contact/freeze issue with my K-1, and the Sigma look amazing in this body.
Could you post a photo of the scratch?
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!
announcement about k-1, body, camera, compatibility, design, dozen, dslr, full frame, full-frame, issue, k-1, k-1 lens, k1, lens, lenses, mount, nikon, pentax, pentax k-1, pka, scratch, sigma, sigma announcement, space, third party lenses
Thread Tools Search this Thread
Search this Thread:

Advanced Search


Similar Threads
Thread Thread Starter Forum Replies Last Post
my 1-k words about the K-1 jimr-pdx Pentax Full Frame 35 05-15-2016 02:32 PM
Question How to Unpin the 'Pentax K-1 Full Frame' announcement at the top of page mee Site Suggestions and Help 8 02-26-2016 09:00 AM
Announcement no one is talking about: Macro converter GM-1 astron Ricoh GR 4 02-23-2016 02:31 PM
For Sale - Sold: Sigma 50mm f1:2.8 K-A Mount 1:1 Macro Manual Focus Lens $85 shipped to US Archimedes the Dog Sold Items 7 11-28-2015 09:46 AM
Dreaming about next PMA announcement regken Pentax DSLR Discussion 3 02-28-2007 08:24 AM



All times are GMT -7. The time now is 03:37 PM. | 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