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Forum: Post Your Photos! 10-26-2022, 06:24 AM  
Landscape Contest Autumn creek
Posted By henrikknutsson
Replies: 4
Views: 267
Thank you Mike!

---------- Post added 10-26-22 at 06:25 AM ----------


Thank you for the kind words!
Forum: Post Your Photos! 10-25-2022, 07:57 AM  
Landscape Contest Autumn creek
Posted By henrikknutsson
Replies: 4
Views: 267
Taken near "Danska fall" nature reserve outside Halmstad, Sweden.
Forum: Repairs and Warranty Service 01-28-2022, 10:47 AM  
Sigma 500mm f/4.5 mount replacement
Posted By henrikknutsson
Replies: 27
Views: 2,085
It works perfectly, took it out today.
Very pleased! 😃
Forum: Repairs and Warranty Service 01-27-2022, 04:08 AM  
Sigma 500mm f/4.5 mount replacement
Posted By henrikknutsson
Replies: 27
Views: 2,085
Hey guys.

The new bayonet arrived today, and is now installed. Really feels like a new lens :D
The difference between the old and new mount was quite severe, see pictures below.
Thanks again for all your replies!

Best regards, Henrik
Forum: Repairs and Warranty Service 01-20-2022, 11:17 PM  
Sigma 500mm f/4.5 mount replacement
Posted By henrikknutsson
Replies: 27
Views: 2,085
Yes mine has AF and you are probably right, quality chanced over time. Thanks!

---------- Post added 01-20-22 at 11:19 PM ----------



Thanks! I have had some wierd auto focus problems so I think a new mount will make this lens function like new. Fingers crossed! :)
Forum: Repairs and Warranty Service 01-20-2022, 01:29 AM  
Sigma 500mm f/4.5 mount replacement
Posted By henrikknutsson
Replies: 27
Views: 2,085
Thanks for all your suggestions. I just got a reply from Sigma Germany, and they had one (1) mount for this model left in their stock. I cant belive it :lol: :lol:
Feels awsome to be able to use this lens for many years to come.
Forum: Repairs and Warranty Service 01-19-2022, 11:24 PM  
Sigma 500mm f/4.5 mount replacement
Posted By henrikknutsson
Replies: 27
Views: 2,085
The lens is 10 years old and was used heavily by the previous owner. It is not something wrong with the K-1 I use it with, but rather poor quality from Sigmas part. :/

---------- Post added 01-19-22 at 11:26 PM ----------



Thanks for the tips. Maybe I could ask Sigma if they can see what lenses use that exact mount in their database🤔
Forum: Repairs and Warranty Service 01-18-2022, 10:48 PM  
Sigma 500mm f/4.5 mount replacement
Posted By henrikknutsson
Replies: 27
Views: 2,085
Thanks for eliminating some more lenses for me. I find it strange that they did use the same mount..😅
Forum: Repairs and Warranty Service 01-18-2022, 01:41 PM  
Sigma 500mm f/4.5 mount replacement
Posted By henrikknutsson
Replies: 27
Views: 2,085
Thanks for the tip!
Forum: Repairs and Warranty Service 01-18-2022, 12:00 PM  
Sigma 500mm f/4.5 mount replacement
Posted By henrikknutsson
Replies: 27
Views: 2,085
I have thought of that aswell. If no other solution present itself I will try to modify another mount. :)
Forum: Repairs and Warranty Service 01-18-2022, 10:16 AM  
Sigma 500mm f/4.5 mount replacement
Posted By henrikknutsson
Replies: 27
Views: 2,085
There are different versions of Sigmas PK mount. The one I need is held in place by three screws and the mount on the 150-500 has four screws.
I tried mounts from a 70-300 and a 10-20, both held in place by three screws but did not fit anyway. Buying a big boy lens even for parts is quite an investment!
Forum: Repairs and Warranty Service 01-18-2022, 09:45 AM  
Sigma 500mm f/4.5 mount replacement
Posted By henrikknutsson
Replies: 27
Views: 2,085
Hi.

I have a Sigma 500mm f/4.5 EX DG APO in Pentax K-mount. The lens mount plate is quite worn, the groove that locks the lens to the camera is almost worn out. Please see attached picture. I have contacted Sigma here in Sweden and they can’t get the part I need. Do any of you have an idea of where I can find one? I belive the part number is 5678P60.

I have tried to replace it with mounts from two other Sigma lenses from the same timeframe, but they do not fit. Thankful for any help.

Best regards, Henrik :)
Forum: Monthly Photo Contests 10-16-2021, 10:07 AM  
Tawny owls
Posted By henrikknutsson
Replies: 7
Views: 122
Cuddling tawny owls, Sweden.
Forum: Pentax Compact Cameras 07-01-2016, 06:18 AM  
Help! MX-1 charger JP/EU
Posted By henrikknutsson
Replies: 2
Views: 1,283
Alright, I compared the two charges and the voltage and hz where the same, should be good then :) Thanks!
Forum: Pentax Compact Cameras 07-01-2016, 02:08 AM  
Help! MX-1 charger JP/EU
Posted By henrikknutsson
Replies: 2
Views: 1,283
So, a few days ago I bought a Pentax MX-1 from Japan, and just realised that the japanese power cord is not the same as the swedish/european one :/ I have a K-3 at home and know that the K-3s power cable fit the MX-1s charger. But, is the voltage the same? Will I be able to charge the MX-1 using the K-3s cable?

Kind regards, Henrik from Sweden :)
Forum: Pentax DSLR Discussion 06-04-2016, 12:21 PM  
Pentax K-3 focusing screen
Posted By henrikknutsson
Replies: 20
Views: 6,208
Thanks Steve. Is this the one?
Focusing Screen
Forum: Pentax DSLR Discussion 06-04-2016, 09:27 AM  
Pentax K-3 focusing screen
Posted By henrikknutsson
Replies: 20
Views: 6,208
I need some help. I only use manual lenses on my K-3, and think it would be of great help to have a split image focusing screen. Have any of you changed your screens? If so, what screen did you get? Was it an easy operation? :)
Forum: Troubleshooting and Beginner Help 04-21-2016, 12:34 AM  
Pentax-M 20mm f/4 focusing issues
Posted By henrikknutsson
Replies: 11
Views: 1,880
Thanks! I will remember his website :)
Forum: Troubleshooting and Beginner Help 04-20-2016, 09:19 AM  
Pentax-M 20mm f/4 focusing issues
Posted By henrikknutsson
Replies: 11
Views: 1,880
I really think the helicoid needs calibration, as some people recommended on other forums and Facebook. Should be an easy fix for a experienced repairman.
Forum: Troubleshooting and Beginner Help 04-20-2016, 09:04 AM  
Pentax-M 20mm f/4 focusing issues
Posted By henrikknutsson
Replies: 11
Views: 1,880
Since I have mounted it on both film and digital cameras I dont think that is the problem. I took some shots with the K-3 and the lens set to infinity, and it was really blurred out.
Forum: Troubleshooting and Beginner Help 04-20-2016, 12:32 AM  
Pentax-M 20mm f/4 focusing issues
Posted By henrikknutsson
Replies: 11
Views: 1,880
How did you fix it? Can you give a tutorial? ;) Thanks for the link!

---------- Post added 04-20-16 at 12:34 AM ----------



The focus ring moves as it should, and reaches the infinity mark. Igs trough the camer that it does not focus :/
Forum: Troubleshooting and Beginner Help 04-19-2016, 01:36 PM  
Pentax-M 20mm f/4 focusing issues
Posted By henrikknutsson
Replies: 11
Views: 1,880
Hi!
Today I was given a Chinon CE-4, which isnt a very interesting camera. But attached was a Pentax-M 20mm f/4 which got me very exited.
I cleaned the lens which turned out to be in great condition. BUT, when looking through the camera it does not focus to infinity!
I looked over the lens and it look fine to me, I even tried on 4 diffrent cameras to make sure it was not the Chinon that was wrong.
It went from the Chinon to my LX, and from there to my MX and K-3. Does not focus. Do you have any suggestions? I heard from a
guy in facebook who said it could be the helicoid. Please see the pictures below :)
Forum: Film SLRs and Compact Film Cameras 05-03-2015, 12:30 PM  
Pentax LX strap lugs
Posted By henrikknutsson
Replies: 14
Views: 5,994
I will! :)
Forum: Film SLRs and Compact Film Cameras 05-03-2015, 12:30 AM  
Pentax LX strap lugs
Posted By henrikknutsson
Replies: 14
Views: 5,994
Thank you, I have now removed the lugs. And yes, it works flawless and is in good condition :)

https://plus.google.com/photos/photo/111087469949452210418/6144543143704793394
Forum: Film SLRs and Compact Film Cameras 05-01-2015, 01:33 PM  
Pentax LX strap lugs
Posted By henrikknutsson
Replies: 14
Views: 5,994
I still cant get them off! Where exactly do I push? On the flat side or the sidee with the jaws? :)
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