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TrueLoveOne
Joined: 30 Sep 2012
Posts: 1839
Location: Netherlands
Expire: 2013-12-24
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 Posted: Thu Nov 15, 2012 12:44 pm Post subject: Pentacon 24mm f/2.8: who made it? |
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TrueLoveOne wrote:
As you might have read in another thread about the Revuenon 24, I also bought this one. Mainly because I had never seen one before, and because there seems to be no info about it.....
I have some more lenses coming this week....and so little time...!
After some quick shots it became clear very fast: this one needs cleaning! Pics are a bit "foggy" so I will only post some after that's done!
It has a push-button to stop-down at a preset value (like Meyer Oreston). It's also an "electric" version.
Meanwhile: please take a look at these pictures and see if you recognize it from some manufacturer, as it is not a true Pentacon imho. Thank you!
Pentacon 24mm f/2.8 by TrueLoveOne, on Flickr
Pentacon 24mm f/2.8 by TrueLoveOne, on Flickr
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ManualFocus-G
Joined: 29 Dec 2008
Posts: 6622
Location: United Kingdom
Expire: 2014-11-24
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| Posted: Thu Nov 15, 2012 12:50 pm Post subject: |
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ManualFocus-G wrote:
Looks like a classic Sigma. The stopdown button is for depth of field preview (this is an automatic aperture lens).
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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 |
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hifisapi
Joined: 25 Sep 2012
Posts: 941
Location: USA
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| Posted: Thu Nov 15, 2012 12:53 pm Post subject: |
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hifisapi wrote:
what is the native lens mount, m42?
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ACQUIRED OVER 30 YEARS:
Cameras: DSLR=Pentax istDS FILM=Pentax SP, SP-F, ESII, SP1000, KX, K2
Lenses : Pentax M42 = Super Multi Coated Takumars 50/1.4 55/1.8 100/4-BELLOWS 500/4.5 1000/8 135-600/6.7 Pentax PK= SMC Pentax-Ks K17/4-FF Fisheye K18/3.5 K20/4 K24/3.5 K28/3.5 K28/2 K35/3.5 K35/2 K50/1.2 K50/1.4K 50/4-MACROK 55/1.8 K85/1.8 K100/4-MACRO K100/4-BELLOWS K105/2.8 K120/2.8 K135/3.5 K135/2.5 K150/4 K200/4 K400/5.6 K45-125/4K 85-210/4.5 Pentax PKM = SMC Pentax-M M40/2.8-Pancake M50/1.4 M75-150/4 M80-200/4.5 Pentax PKA= SMC Pentax-A A15/3.5 A50/2.8-MACRO A28/2 A35/2 A50/1.4 A135/2.8 A200/4 A*300/4 A35-105/3.5 A24-50/4 A70-210/4 TAMRON AD2= SP80-200/2.8 SP180/2.5 TOKINA AT-X PK= ATX28-85/3.5-4.5 ATX35-70/2.8 ATX60-120/2.8 ATX80-200/2.8 ATX100-300/4 ATX90/2.5 MACRO KIRON-LESTER DINE PK = 105/2.8-MACRO VIVITAR PK = 135/2.8-MACRO 28-85/4 NOFLEXAR AUTOBELLOWS PK = 60/4 105/4 |
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ForenSeil
Joined: 15 Apr 2011
Posts: 2726
Location: Kiel, Germany.
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| Posted: Thu Nov 15, 2012 1:18 pm Post subject: |
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ForenSeil wrote:
| ManualFocus-G wrote: |
| Looks like a classic Sigma. The stopdown button is for depth of field preview (this is an automatic aperture lens). |
Did Sigma produce lenses under Pentacon brand? I thought Pentacon produced very GDR-like every single screw on their own.
Maybe it's a product from the 90ies after Pentacon was closed?
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I'm not a collector, I'm a tester 
My camera: Sony A7+Zeiss Sonnar 55/1.8
Current favourite lenses (I have many more):
A few macro-Tominons, Samyang 12/2.8, Noritsu 50.7/9.5, Rodagon 105/5.6 on bellows, Samyang 135/2, Nikon ED 180/2.8, Leitz Elmar-R 250/4, Celestron C8 2000mm F10
Most wanted: Samyang 24/1.4, Samyang 35/1.4, Nikon 200/2 ED
My Blog: http://picturechemistry.own-blog.com/
(German language) |
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ManualFocus-G
Joined: 29 Dec 2008
Posts: 6622
Location: United Kingdom
Expire: 2014-11-24
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| Posted: Thu Nov 15, 2012 1:21 pm Post subject: |
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ManualFocus-G wrote:
Yep loads of Sigmas were branded Pentacon, more so in PB mount than M42. Some Samyangs too (in PB mount).
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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 |
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TrueLoveOne
Joined: 30 Sep 2012
Posts: 1839
Location: Netherlands
Expire: 2013-12-24
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| Posted: Thu Nov 15, 2012 1:51 pm Post subject: |
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TrueLoveOne wrote:
@Manualfocus-G : I know about the dof-button  also handy when used on digital!
I have had several Sigma 28mm lenses.... they were quite different. This is bigger for starters. Filter thread 62mm.
Also: it's M42, but the lower mount-ring can be screwed off, maybe it's a T-mount??
There's another Sigma I have with the Pentacon name on it. The Minizoom 39-80 macro, so it would not surprise me if it were a Sigma after all....
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Sony A7, Canon 5D mkII, Minolta 7D + RD3000 and some more.....
Minolta and Konica collector.... slowly selling all the other stuff! |
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heritagecameras
Joined: 19 Feb 2011
Posts: 104
Location: UK
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| Posted: Thu Nov 15, 2012 2:15 pm Post subject: |
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heritagecameras wrote:
| TrueLoveOne wrote: |
| Also: it's M42, but the lower mount-ring can be screwed off, maybe it's a T-mount?? |
That should be a YS mount, used by Sigma, Sun, Polaris and others. It's like a T2 mount, but with auto diaphragm and (sometimes) full aperture metering. The original mount for this lens would have been a YS-LLC type, for M42 screw with the extra Praktica electric meter coupling.
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TrueLoveOne
Joined: 30 Sep 2012
Posts: 1839
Location: Netherlands
Expire: 2013-12-24
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| Posted: Thu Nov 15, 2012 2:40 pm Post subject: |
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TrueLoveOne wrote:
Then it's probably a Sigma... anybody know if it is any good??
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Sony A7, Canon 5D mkII, Minolta 7D + RD3000 and some more.....
Minolta and Konica collector.... slowly selling all the other stuff! |
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iangreenhalgh1
Joined: 18 Mar 2011
Posts: 15679
Expire: 2014-01-07
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| Posted: Thu Nov 15, 2012 3:47 pm Post subject: |
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iangreenhalgh1 wrote:
It should be good, the later Sigma 24mms are good, it won't be as good as the best 24mms like the Konica, Nikon, Yashica ML and Olympus OM ones but it should be capable of some very nice wide angle images.
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TrueLoveOne
Joined: 30 Sep 2012
Posts: 1839
Location: Netherlands
Expire: 2013-12-24
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| Posted: Thu Nov 15, 2012 3:51 pm Post subject: |
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TrueLoveOne wrote:
We'll see! I will clean it as good as i can first, somewhere next week....
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My Flickr photostream: http://www.flickr.com/photos/chantalrene/
Sony A7, Canon 5D mkII, Minolta 7D + RD3000 and some more.....
Minolta and Konica collector.... slowly selling all the other stuff! |
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TrueLoveOne
Joined: 30 Sep 2012
Posts: 1839
Location: Netherlands
Expire: 2013-12-24
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| Posted: Sat Nov 17, 2012 10:46 am Post subject: |
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TrueLoveOne wrote:
I had some spare time, so I decided to take it apart. The micro fibre cleaning tip in the picture is pointing at the hazy/foggy element. Of course I had to remove everything else to reach it......
I do not know what it was, as it was no where near the iris blades. Just a small tube with a lens on each side, nothing mechanical around there. The "smear" did come off a bit difficult. Had to use a lens cleaner, and then rinsed it thoroughly with water, finally it got clean by rubbing the wet lens with a micro fibre cloth.
Pentacon 2.8/24 exploded view by TrueLoveOne, on Flickr
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My Flickr photostream: http://www.flickr.com/photos/chantalrene/
Sony A7, Canon 5D mkII, Minolta 7D + RD3000 and some more.....
Minolta and Konica collector.... slowly selling all the other stuff! |
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Pancolart
Joined: 04 Feb 2008
Posts: 3705
Location: Slovenia, EU
Expire: 2013-11-18
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| Posted: Sat Nov 17, 2012 11:52 am Post subject: |
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Pancolart wrote:
Congratulations on your procedure. But i think au contraire to Ian, you should not expect too much (especially edges are known to be undernourished). This is still early Sigma, IMHO mini-wide models are later and improved.
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