| View previous topic :: View next topic |
| Author |
Message |
fish4570
Joined: 06 Jan 2010
Posts: 4514
Location: At the confluence of the Locust Fork of the Warrior River and Black Creek, Alabama
Expire: 2012-03-21
|
 Posted: Tue Jan 12, 2010 2:24 am Post subject: praktica ltl 3 ok; pentacon blades sticking |
 |
|
fish4570 wrote:
a roll of film i shot last week showed some strange streaks on a couple of prints, depth of field issues and under/over exposure issues. aha! i noted today the pentacon 1.8/50's aperture blades were sticking, then free, then sort of sticking, etc. advance has been kind of creaky lately, and i may be having shutter issues, too, going by latest pics.
good thing i got a minolta a5 recently, and a spotmatic body that arrived today. if i hadn't been trying the praktica's lenses on the spotmatic ...
and i am blessed that i accidentally won not one but two normal primes on e-bay last night ... 
_________________
Paul
I chase Light
http://blackcreekjournal.blogspot.com/
Last edited by fish4570 on Fri Jan 15, 2010 4:38 pm; edited 1 time in total |
|
| Back to top |
|
 |
martinsmith99
Joined: 31 Aug 2008
Posts: 6950
Location: S Glos, UK
Expire: 2013-11-18
|
| Posted: Tue Jan 12, 2010 7:22 am Post subject: |
|
|
martinsmith99 wrote:
Unfortunately, this is a problem with the Pentacon. I bought 3 before I found one that worked correctly. It is an easy lens to work on though (which I only found out after I gave the others away).
_________________
Casual attendance these days |
|
| Back to top |
|
|
ManualFocus-G
Joined: 29 Dec 2008
Posts: 6622
Location: United Kingdom
Expire: 2014-11-24
|
| Posted: Tue Jan 12, 2010 7:35 am Post subject: |
|
|
ManualFocus-G wrote:
| martinsmith99 wrote: |
| Unfortunately, this is a problem with the Pentacon. I bought 3 before I found one that worked correctly. It is an easy lens to work on though (which I only found out after I gave the others away). |
Seconded, the front screws off and allows access to the blades. I really like the Pentacon 50/1.8, but as Martin says, difficult to find a fully working one! Bit like Pancolars in that respect!
_________________
Graham - Moderator 
Shooter of choice: Fujifilm X-T20 with M42, PB and C/Y lenses
See my Flickr photos at http://www.flickr.com/photos/manualfocus-g |
|
| Back to top |
|
|
fish4570
Joined: 06 Jan 2010
Posts: 4514
Location: At the confluence of the Locust Fork of the Warrior River and Black Creek, Alabama
Expire: 2012-03-21
|
| Posted: Tue Jan 12, 2010 12:54 pm Post subject: |
|
|
fish4570 wrote:
at least it worked perfectly for many years, and it worked smashingly through my grandchild's first six months ... 
_________________
Paul
I chase Light
http://blackcreekjournal.blogspot.com/ |
|
| Back to top |
|
|
fish4570
Joined: 06 Jan 2010
Posts: 4514
Location: At the confluence of the Locust Fork of the Warrior River and Black Creek, Alabama
Expire: 2012-03-21
|
| Posted: Wed Jan 13, 2010 2:10 pm Post subject: |
|
|
fish4570 wrote:
the body seems to be working just fine with the vivitar 135/f2.8. took some frosty shots this morning. stopping down properly. so maybe it is just the pentacon after all ...
_________________
Paul
I chase Light
http://blackcreekjournal.blogspot.com/ |
|
| Back to top |
|
|
martinsmith99
Joined: 31 Aug 2008
Posts: 6950
Location: S Glos, UK
Expire: 2013-11-18
|
| Posted: Wed Jan 13, 2010 2:23 pm Post subject: |
|
|
martinsmith99 wrote:
It may be fine when temperatures rise. But don't get rid of it as it is a good lens.
_________________
Casual attendance these days |
|
| Back to top |
|
|
fish4570
Joined: 06 Jan 2010
Posts: 4514
Location: At the confluence of the Locust Fork of the Warrior River and Black Creek, Alabama
Expire: 2012-03-21
|
| Posted: Thu Jan 14, 2010 3:18 pm Post subject: |
|
|
fish4570 wrote:
i just finished a roll of bw with the ltl and vivitar 135/2.8 ...
_________________
Paul
I chase Light
http://blackcreekjournal.blogspot.com/ |
|
| Back to top |
|
|
francotirador
Joined: 17 Sep 2009
Posts: 894
|
| Posted: Sat Jan 23, 2010 10:27 pm Post subject: |
|
|
francotirador wrote:
You just have to clean, really clean each lens should be used to buy.
And the Praktica is common to fail for lack of lubrication, is rustic, but it locks with ease.
greetings.
_________________
Canon 5D II-Sony nex 6
Canon L 80-200 f 2.8 - Canon L 135 f2 - Canon FD 135/2.5 convert to EOS - Yashica 50 1.4 ML - Canon FD 50 1.2 - Distagon 35mm 2.8 T AEJ - Minolta MC 24mm f 2.8 - Canon LTM 85 1.9- Canon LTM 85mm 1.9 convert to EOS - Rodenstock Heligon 50 1.9 - Color Skopar 50 2.8 & MAte Box & filters 4X4
Contax RTS II y Minolta SRT 303 - 28-135 3.6 Tokina - Minolta MD 45 f2.0 - Minolta Zoom 80 200 4.5 (Leica)
www.isgleasphoto.com
The life is more easy with this forum .... |
|
| Back to top |
|
|
fish4570
Joined: 06 Jan 2010
Posts: 4514
Location: At the confluence of the Locust Fork of the Warrior River and Black Creek, Alabama
Expire: 2012-03-21
|
| Posted: Sat Jan 23, 2010 10:52 pm Post subject: |
|
|
fish4570 wrote:
thanks, franco. i'll look for a tutorial.
_________________
Paul
I chase Light
http://blackcreekjournal.blogspot.com/ |
|
| Back to top |
|
|
francotirador
Joined: 17 Sep 2009
Posts: 894
|
| Posted: Sun Jan 24, 2010 3:09 pm Post subject: |
|
|
francotirador wrote:
Hello, not any tutorial, but it is very easy. Start by removing the back and you will have before it the first part of the mechanism of the diaphragm. Unfortunately I sold mine and I can not disarm and take pictures of the process.
Let me see if I find something and remember, no oil in the mechanism of the diaphragm.
Good Lucky.
_________________
Canon 5D II-Sony nex 6
Canon L 80-200 f 2.8 - Canon L 135 f2 - Canon FD 135/2.5 convert to EOS - Yashica 50 1.4 ML - Canon FD 50 1.2 - Distagon 35mm 2.8 T AEJ - Minolta MC 24mm f 2.8 - Canon LTM 85 1.9- Canon LTM 85mm 1.9 convert to EOS - Rodenstock Heligon 50 1.9 - Color Skopar 50 2.8 & MAte Box & filters 4X4
Contax RTS II y Minolta SRT 303 - 28-135 3.6 Tokina - Minolta MD 45 f2.0 - Minolta Zoom 80 200 4.5 (Leica)
www.isgleasphoto.com
The life is more easy with this forum .... |
|
| Back to top |
|
|
fish4570
Joined: 06 Jan 2010
Posts: 4514
Location: At the confluence of the Locust Fork of the Warrior River and Black Creek, Alabama
Expire: 2012-03-21
|
| Posted: Sun Jan 24, 2010 3:34 pm Post subject: |
|
|
fish4570 wrote:
thank you.
_________________
Paul
I chase Light
http://blackcreekjournal.blogspot.com/ |
|
| Back to top |
|
|
fish4570
Joined: 06 Jan 2010
Posts: 4514
Location: At the confluence of the Locust Fork of the Warrior River and Black Creek, Alabama
Expire: 2012-03-21
|
| Posted: Sun Jan 24, 2010 8:45 pm Post subject: |
|
|
fish4570 wrote:
further examination shows the problem to be the stop-down button. if touched a certain way, it can hold the blades closed or open. a little tap and all is well. still, the 3enbs is not to be trusted - for now. the stop-down button on the lens is right beside the shutter button ...
_________________
Paul
I chase Light
http://blackcreekjournal.blogspot.com/ |
|
| Back to top |
|
|
francotirador
Joined: 17 Sep 2009
Posts: 894
|
| Posted: Tue Jan 26, 2010 4:00 pm Post subject: |
|
|
francotirador wrote:
| fish4570 wrote: |
| further examination shows the problem to be the stop-down button. if touched a certain way, it can hold the blades closed or open. a little tap and all is well. still, the 3enbs is not to be trusted - for now. the stop-down button on the lens is right beside the shutter button ... |
Try cleaning, so you just take the mount and have the mechanism in sight. The same thing happened to me. It's easy to put it back together must be closed in the diaphragm.
_________________
Canon 5D II-Sony nex 6
Canon L 80-200 f 2.8 - Canon L 135 f2 - Canon FD 135/2.5 convert to EOS - Yashica 50 1.4 ML - Canon FD 50 1.2 - Distagon 35mm 2.8 T AEJ - Minolta MC 24mm f 2.8 - Canon LTM 85 1.9- Canon LTM 85mm 1.9 convert to EOS - Rodenstock Heligon 50 1.9 - Color Skopar 50 2.8 & MAte Box & filters 4X4
Contax RTS II y Minolta SRT 303 - 28-135 3.6 Tokina - Minolta MD 45 f2.0 - Minolta Zoom 80 200 4.5 (Leica)
www.isgleasphoto.com
The life is more easy with this forum .... |
|
| Back to top |
|
|
fish4570
Joined: 06 Jan 2010
Posts: 4514
Location: At the confluence of the Locust Fork of the Warrior River and Black Creek, Alabama
Expire: 2012-03-21
|
| Posted: Fri Jan 29, 2010 10:23 pm Post subject: |
|
|
fish4570 wrote:
franco, the pentacon is, indeed, easy to take apart. but i gave up after removing the first layer, then dropping the aperture detent ball three times. i lost it on the third one. the next screws were way too small for my trembling fingers to handle. i did clean the stopdown button and its shaft. that did not fix the problem. i'll get one of my sons to take it down the next layer to the aperture blades ...
_________________
Paul
I chase Light
http://blackcreekjournal.blogspot.com/ |
|
| 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
|
Search
Memberlist
Register
Profile
Log in to check your private messages
Log in
