View previous topic :: View next topic |
Author |
Message |
Edom31
Joined: 18 Feb 2018 Posts: 35
|
Posted: Mon Aug 27, 2018 2:14 am Post subject: Helios 44M-4 58/2 |
|
|
Edom31 wrote:
Hello,
I have a copy of this lens but I think I'm missing something...
My copy, when I depress the "ricoh pin", I do not get the aperture blades to do what they're supposed to. Apparently, there is a circular lever somewhat inside the back of the lens (the top portion of the first shot), if engaged, the aperture blades do engage....
Is there a way to engage this lever at all times?
_________________ Mostly Pentax series (Taks - K - M - A - F) and some Oly OMs |
|
Back to top |
|
|
fotomachi
Joined: 02 Feb 2008 Posts: 638 Location: Estados Unidos de las Esferas Ultraterrenales
|
Posted: Mon Aug 27, 2018 4:08 am Post subject: |
|
|
fotomachi wrote:
I have the MC version of this lens.
Pressing the pin on the bottom of your photo, the aperture blades move and the pin at the top moves.
Moving (not pressing) the pin at the top, the aperture blades move as well. _________________ :::[ f o t o m a c h i . M X ]:::
:::[ F o T o M a C h i . C o M ]:::
:::[ M y . l e n s . c o l l e c t i o n ]:::
:::[ M a c h i g l a z k i . О п т и к . B l o g ]::: |
|
Back to top |
|
|
D1N0
Joined: 07 Aug 2012 Posts: 2483
|
Posted: Mon Aug 27, 2018 12:14 pm Post subject: |
|
|
D1N0 wrote:
These later versions (from m-4 didn't have a manual A/M switch). It was handled by the camera I think or there wasn't a manual mode.
You need an adapter that presses the switch or disable the mechanism.
https://youtu.be/-BxLnveJ2yU _________________ pentaxian |
|
Back to top |
|
|
Musashichan
Joined: 18 Nov 2015 Posts: 96
|
Posted: Mon Aug 27, 2018 4:46 pm Post subject: |
|
|
Musashichan wrote:
When you push the pin the aperture baldes should move (if another aperture than f2 is selected of course). If you push inside and it works, it must just be something with the pin. You can unscrew the back, it's very easy to see inside how it's working ; just check inside what's going on. _________________ Visit my website : http://www.vintagephotography.fr
Flikr : https://www.flickr.com/photos/60427575@N08/ |
|
Back to top |
|
|
Edom31
Joined: 18 Feb 2018 Posts: 35
|
Posted: Wed Aug 29, 2018 3:40 pm Post subject: |
|
|
Edom31 wrote:
I will open it and check - yeah, the Ricoh pin kinda just sits there and nothing happens, unless I manually move the other lever (with a pencil or thin object as it is indented).
I think a regular google search should give me infor about the insides of this lens (I've done open many Pentax Manual lenses before...)
thanks! _________________ Mostly Pentax series (Taks - K - M - A - F) and some Oly OMs |
|
Back to top |
|
|
D1N0
Joined: 07 Aug 2012 Posts: 2483
|
Posted: Wed Aug 29, 2018 7:16 pm Post subject: |
|
|
D1N0 wrote:
Thats not a Ricoh pin but a auto aperture lever. I think it was disabled in order to use the lens on digital. _________________ pentaxian |
|
Back to top |
|
|
Edom31
Joined: 18 Feb 2018 Posts: 35
|
Posted: Fri Aug 31, 2018 1:29 pm Post subject: |
|
|
Edom31 wrote:
D1N0 wrote: |
Thats not a Ricoh pin but a auto aperture lever. I think it was disabled in order to use the lens on digital. |
Well, there is both - ricoh pin at bottom, aperture lever top (as per my photo). Or did I miss it? _________________ Mostly Pentax series (Taks - K - M - A - F) and some Oly OMs |
|
Back to top |
|
|
D1N0
Joined: 07 Aug 2012 Posts: 2483
|
Posted: Fri Aug 31, 2018 9:55 pm Post subject: |
|
|
D1N0 wrote:
You will only find Ricoh pins on k-mount lenses designed for the Ricoh system. They are infamous because they can make the lens get stuck on Pentax AF bodies. The pin was proprietary to Ricoh because Pentax would not let other companies use the Ka mount (K-mount with aperture set on body via a contact). So Ricoh made their own work around.
example:
Note the pin at the bottom left by Robin Parmar, on Flickr _________________ pentaxian |
|
Back to top |
|
|
Edom31
Joined: 18 Feb 2018 Posts: 35
|
Posted: Thu Dec 06, 2018 6:12 pm Post subject: |
|
|
Edom31 wrote:
D1N0 wrote: |
You will only find Ricoh pins on k-mount lenses designed for the Ricoh system. They are infamous because they can make the lens get stuck on Pentax AF bodies. The pin was proprietary to Ricoh because Pentax would not let other companies use the Ka mount (K-mount with aperture set on body via a contact). So Ricoh made their own work around.
example:
Note the pin at the bottom left by Robin Parmar, on Flickr |
Thank you for this clarification!!! _________________ Mostly Pentax series (Taks - K - M - A - F) and some Oly OMs |
|
Back to top |
|
|
|
|
You cannot post new topics in this forum You cannot reply to topics in this forum You cannot edit your posts in this forum You cannot delete your posts in this forum You cannot vote in polls in this forum
|