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Eugen Mezei
![Level 2 Level 2](rating2.gif) Joined: 17 May 2008 Posts: 266
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Posted: Sun Nov 04, 2012 2:53 am Post subject: I still don't get it |
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Eugen Mezei wrote:
Well....
first it exist the Pentacon 1:4 300mm. (picture 1)
This lens is designed for 6x6 and you the older versions are called Meyer Optik Görlitz Orestegor.
His last piece of tubus is changeable and it can be equipped with a final piece with P6 bayonet or M42 screw.
It is preset.
Then we have the Carl Zeiss Jena MC Sonnar 1:4 300mm for M42 (picture 2)
As it can clearly be seen, this has an adapter P6 to M42. At least that final piece looks exactly the adapter I have for using P6 lenses on M42.
Finally we have the Carl Zeiss Jena Prakticar 4/300 mm MC for Praktica bayonet. (pictures 3,4,5)
My questions are:
- Which of this lenses is for 6x6 and which not?
- Which of them have automatic aperture?
- How are they interrelated?
- Can one built into another mount wise?
Greetings,
Eugen
#1 Pentacon/Orestegor
#2 CZJ
#3 Prakticar
#4
#5
![](http://forum.mflenses.com/userpix/201211/553_Prakticar2_1.jpg) |
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WolverineX
![Level 3 Level 3](rating3.gif) Joined: 19 Apr 2009 Posts: 1693 Location: Zagreb , Croatia , Europe
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Posted: Sun Nov 04, 2012 7:49 am Post subject: |
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WolverineX wrote:
http://www.pentaconsix.com/p6data.htm
Pentacon and Sonnar are made for Pentacon 6 and have adapters to m42, so you can use them both on Pentacon 6 camera. also on DSLRs and mirrorless digital cameras
Prakticar is made for SLRs with Praktica B mount and can be used only on those SLRs and on mirrorless digital cameras _________________ my tools:Oly E-M5 + 45mm/1.8 + Oly E-520 + 12-60 + 14-42 + 70-300 + Sigma 105mm + FL-50R + EC20 + SRF-11 ring flash
http://forum.mflenses.com/wolverinex-testing-my-lenses-series-link-list-t39524.html |
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hifisapi
![Level 3 Level 3](rating3.gif) Joined: 25 Sep 2012 Posts: 941 Location: USA
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Posted: Sun Nov 04, 2012 9:45 am Post subject: |
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hifisapi wrote:
WolverineX wrote: |
Prakticar is made for SLRs with Praktica B mount and can be used only on those SLRs and on mirrorless digital cameras |
Based on the looks of it, yes, but are there adapters available for that mount to mirrorless? I wouldnt bet on it. _________________ ===========
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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Attila
![Level 4 Level 4](rating4.gif) Joined: 24 Feb 2007 Posts: 57865 Location: Hungary
Expire: 2025-11-18
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Posted: Sun Nov 04, 2012 10:54 am Post subject: |
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Attila wrote:
Pentacon 300mm is a P6 lens and designed for P6 it has interchangeable mount available to P6 and M42 both. Prakticar 300mm f4 is a redesigned lens for Praktica PB from (Sonnar 300mm f4 which is a P6 lens and adapter available to M42), Prakticar 300mm f4 has no interchangeable mount.
MC Sonnar 300mm f4 can work in auto and manual mode both , Pentacon 300mm f4 I am unsure, Prakticar 300mm f4 is a normal auto lens no manual mode. _________________ -------------------------------
Items on sale on Ebay
Sony NEX-7 Carl Zeiss Planar 85mm f1.4, Minolta MD 35mm f1.8, Konica 135mm f2.5, Minolta MD 50mm f1.2, Minolta MD 250mm f5.6, Carl Zeiss Sonnar 180mm f2.8
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WolverineX
![Level 3 Level 3](rating3.gif) Joined: 19 Apr 2009 Posts: 1693 Location: Zagreb , Croatia , Europe
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Posted: Sun Nov 04, 2012 1:33 pm Post subject: |
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WolverineX wrote:
hifisapi wrote: |
WolverineX wrote: |
Prakticar is made for SLRs with Praktica B mount and can be used only on those SLRs and on mirrorless digital cameras |
Based on the looks of it, yes, but are there adapters available for that mount to mirrorless? I wouldnt bet on it. |
yes, there is an adapter for Praktica B mount to m4/3
Click here to see on Ebay _________________ my tools:Oly E-M5 + 45mm/1.8 + Oly E-520 + 12-60 + 14-42 + 70-300 + Sigma 105mm + FL-50R + EC20 + SRF-11 ring flash
http://forum.mflenses.com/wolverinex-testing-my-lenses-series-link-list-t39524.html |
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Aanything
![Level 3 Level 3](rating3.gif) Joined: 27 Aug 2011 Posts: 2187 Location: Piacenza, Italy
Expire: 2014-05-30
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Posted: Sun Nov 04, 2012 1:43 pm Post subject: |
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Aanything wrote:
For nex also:
Click here to see on Ebay
And i'm quite sure i saw some for canon EOS as well, but I don't know if those need infinity adjust. _________________ C&C and editing of my pics are always welcome
Samples from my lenses
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peterqd
![Level 4 Level 4](rating4.gif) Joined: 28 Feb 2007 Posts: 7448 Location: near High Wycombe, UK
Expire: 2014-01-04
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Posted: Sun Nov 04, 2012 3:02 pm Post subject: |
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peterqd wrote:
Attila wrote: |
MC Sonnar 300mm f4 can work in auto and manual mode both , Pentacon 300mm f4 I am unsure, Prakticar 300mm f4 is a normal auto lens no manual mode. |
The Pentacon/Meyer 4/300 is a preset, definitely not automatic aperture.
Incidentally, besides P6 and M42 adapters there was also an adapter for Exakta 35mm SLR cameras for the 4/300 (and for the 5.6/500 as well). The adapters for the 4/200 and 2.8/135 Meyers are shorter, for M42 and Exakta only.
http://captjack.exaktaphile.com/Meyer%20page.htm _________________ Peter - Moderator |
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Eugen Mezei
![Level 2 Level 2](rating2.gif) Joined: 17 May 2008 Posts: 266
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Posted: Mon Nov 05, 2012 8:25 pm Post subject: |
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Eugen Mezei wrote:
I understand that
- the Pentacon/Meyer and the Zeiss are different lenses
- the Pentacon has interchangeable mounts (M42, P6, Exa and if I remember correctly also Praktina)
- Pentacon is preset and Zeiss is automatic (I'm in doubt with the Zeiss)
From personal experience I only know the Pentacon.
What I still don't understand is how the above two lenses are related to the Praktina.
A CZJ version for M42 also exist. Have that evolved from the P6 CZJ and from there the PB version? Or are the M42 and the PB calculations for covering only 24x36?
I doubt the PB is automatic apperture. I saw pictures of it and the iris has as most blades as the Pentacon. I don't think this iris can be closed by an auto mechanism. |
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peterqd
![Level 4 Level 4](rating4.gif) Joined: 28 Feb 2007 Posts: 7448 Location: near High Wycombe, UK
Expire: 2014-01-04
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Posted: Mon Nov 05, 2012 11:20 pm Post subject: |
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peterqd wrote:
Eugen Mezei wrote: |
I understand that
- the Pentacon/Meyer and the Zeiss are different lenses
- the Pentacon has interchangeable mounts (M42, P6, Exa and if I remember correctly also Praktina)
- Pentacon is preset and Zeiss is automatic (I'm in doubt with the Zeiss)
From personal experience I only know the Pentacon.
What I still don't understand is how the above two lenses are related to the Praktina.
A CZJ version for M42 also exist. Have that evolved from the P6 CZJ and from there the PB version? Or are the M42 and the PB calculations for covering only 24x36?
I doubt the PB is automatic apperture. I saw pictures of it and the iris has as most blades as the Pentacon. I don't think this iris can be closed by an auto mechanism. |
Eugen, is there confusion about Praktina and Praktica? The 4.0/300 lens for Praktina mount was the older Meyer/Pentacon preset Orestegor, for which there were also adapters for P6, M42 and Exakta.
http://www.praktina.com/plens03l.htm
The 4.0/300 lens for the Praktica B mount (not Praktina) came much later, in 1978. This is a "Prakticar" lens, and according to this page, it was made by CZJ. It is a completely different lens, for 35mm only. PB cameras had open aperture metering using electrical contacts on the lens, similar to the Pentax-A mount, so this lens must have auto-aperture function. I don't know how many blades it has.
The registration distance of the PB mount is 44.4mm. It is possible to use it on Canon EF mount with an adapter (often inaccurate I think), but for any other DSLRs it will need some serious alteration. There should adapters available to use it on mirrorless cameras like NEX but I'm not certain about that. Obviously the auto-aperture mechanism will not function on any other camera than PB mount. _________________ Peter - Moderator |
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