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Nelson
Joined: 06 Jan 2008 Posts: 618 Location: close to Paris, France
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Posted: Fri Jan 18, 2008 10:28 am Post subject: Adapter praktica B -> eos |
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Nelson wrote:
I would like to get an adpter to use just for fun my few Praktica B lenses...
It seems it does not exist.
Do you have ideas ? |
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Flor27
Joined: 13 Sep 2007 Posts: 1195 Location: Paris, France
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Posted: Fri Jan 18, 2008 12:15 pm Post subject: |
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Flor27 wrote:
It was already discussed here, just do a search using Google :
http://www.google.com/search?q=site%3Aforum.mflenses.com+praktica+eos+adapter _________________ Switching from M42 to Minolta MD & Contax/Yashica |
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Flor27
Joined: 13 Sep 2007 Posts: 1195 Location: Paris, France
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Posted: Fri Jan 18, 2008 12:34 pm Post subject: |
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Flor27 wrote:
Well actually, not really - we have discussed about PK mount compared to PB mount.
PB mount has a fewer register than M42/PK so you will not find PB to EOS adapter with still infinity focus.
Anyway I don't thnik such adapter has ever existed ! _________________ Switching from M42 to Minolta MD & Contax/Yashica |
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bob955i
Joined: 15 Apr 2007 Posts: 2495
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Posted: Sun Jan 20, 2008 9:24 pm Post subject: |
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bob955i wrote:
Only PB adapter I've ever seen, and have, is M42-PB. |
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Nelson
Joined: 06 Jan 2008 Posts: 618 Location: close to Paris, France
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Posted: Sat Jan 26, 2008 10:14 pm Post subject: |
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Nelson wrote:
When i opened this topic i was thninking about modifying an already existing adapter.
I took a look at may Rollei adapter and wondered if some other coul be modified ?
tonight, i found this with google
http://oomz.net/kadapter/
Do someone of you have a K->eos adapter ?
Of so, can you take a picture of it with dimensions ?
tanks _________________ DSLR : EOS 350D, 300D, 7D, 5D
Pentacon 50 f1.8, 135 f2.8, 200 f4;
TAIR 3S
Helios 44/2
Meyer Optik Orestegor 200mm f4 Orestegor 300mm f4
Tamron 24mm f2.5 01B, 300mm f5.6 670Au, 75 250, 300mm f5.6 SP 54B, 500mm f8 SP 55B, SP 70 210 3.5, SP 60 300
my MF lenses
EF 50 1.8 I, EF 100macro f2.8, EF 70-200 F4 L is, EFS 17-55 f2.8 is, Sigma 10-20 EX, 18-50 2.8 EX, 300 f4 hsm, 400 5.6 hsm |
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Attila
Joined: 24 Feb 2007 Posts: 57839 Location: Hungary
Expire: 2021-11-18
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Posted: Sat Jan 26, 2008 10:17 pm Post subject: |
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Attila wrote:
This is an awful job to damage a lens and convert... I not like at all , but I understand why people doing ... better than not use these lenses. _________________ -------------------------------
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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Nelson
Joined: 06 Jan 2008 Posts: 618 Location: close to Paris, France
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Posted: Sat Jan 26, 2008 10:27 pm Post subject: |
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Nelson wrote:
Why damaging a lens ?
if K adapter can be modified to use Bmount, it has to tested
an adapter is just an adapter.
I'll never damage my old Prakticar even if they cost nothing _________________ DSLR : EOS 350D, 300D, 7D, 5D
Pentacon 50 f1.8, 135 f2.8, 200 f4;
TAIR 3S
Helios 44/2
Meyer Optik Orestegor 200mm f4 Orestegor 300mm f4
Tamron 24mm f2.5 01B, 300mm f5.6 670Au, 75 250, 300mm f5.6 SP 54B, 500mm f8 SP 55B, SP 70 210 3.5, SP 60 300
my MF lenses
EF 50 1.8 I, EF 100macro f2.8, EF 70-200 F4 L is, EFS 17-55 f2.8 is, Sigma 10-20 EX, 18-50 2.8 EX, 300 f4 hsm, 400 5.6 hsm |
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Attila
Joined: 24 Feb 2007 Posts: 57839 Location: Hungary
Expire: 2021-11-18
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Posted: Sat Jan 26, 2008 10:33 pm Post subject: |
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Attila wrote:
Seems I don't understood as well ... thanks for pointing that! _________________ -------------------------------
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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bob955i
Joined: 15 Apr 2007 Posts: 2495
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Posted: Sat Jan 26, 2008 10:38 pm Post subject: |
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bob955i wrote:
I adapt PK rear lens caps to fit PB so an adapter adaptation should be relatively straightforward. |
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Nelson
Joined: 06 Jan 2008 Posts: 618 Location: close to Paris, France
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Posted: Sat Jan 26, 2008 10:38 pm Post subject: |
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Nelson wrote:
I will study the case
I'll tell you if i succes
Just for fun of using my old Prakticar _________________ DSLR : EOS 350D, 300D, 7D, 5D
Pentacon 50 f1.8, 135 f2.8, 200 f4;
TAIR 3S
Helios 44/2
Meyer Optik Orestegor 200mm f4 Orestegor 300mm f4
Tamron 24mm f2.5 01B, 300mm f5.6 670Au, 75 250, 300mm f5.6 SP 54B, 500mm f8 SP 55B, SP 70 210 3.5, SP 60 300
my MF lenses
EF 50 1.8 I, EF 100macro f2.8, EF 70-200 F4 L is, EFS 17-55 f2.8 is, Sigma 10-20 EX, 18-50 2.8 EX, 300 f4 hsm, 400 5.6 hsm |
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Nelson
Joined: 06 Jan 2008 Posts: 618 Location: close to Paris, France
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Posted: Sat Jan 26, 2008 10:40 pm Post subject: |
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Nelson wrote:
bob955i wrote: |
I adapt PK rear lens caps to fit PB so an adapter adaptation should be relatively straightforward. |
Very interresting
I'll order a Kmount -> eos adapter and i'll tell you _________________ DSLR : EOS 350D, 300D, 7D, 5D
Pentacon 50 f1.8, 135 f2.8, 200 f4;
TAIR 3S
Helios 44/2
Meyer Optik Orestegor 200mm f4 Orestegor 300mm f4
Tamron 24mm f2.5 01B, 300mm f5.6 670Au, 75 250, 300mm f5.6 SP 54B, 500mm f8 SP 55B, SP 70 210 3.5, SP 60 300
my MF lenses
EF 50 1.8 I, EF 100macro f2.8, EF 70-200 F4 L is, EFS 17-55 f2.8 is, Sigma 10-20 EX, 18-50 2.8 EX, 300 f4 hsm, 400 5.6 hsm |
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Ballu
Joined: 28 Feb 2007 Posts: 912 Location: Columbus, OH. USofA
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Posted: Mon Feb 18, 2008 8:12 am Post subject: |
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Ballu wrote:
Nelson wrote: |
bob955i wrote: |
I adapt PK rear lens caps to fit PB so an adapter adaptation should be relatively straightforward. |
Very interresting
I'll order a Kmount -> eos adapter and i'll tell you |
Any success in using Praktica B-mount lenses on EOS camera.... _________________ -Ballu
http://balyanpage.blogspot.com/ |
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Nelson
Joined: 06 Jan 2008 Posts: 618 Location: close to Paris, France
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Posted: Fri Mar 14, 2008 8:33 pm Post subject: |
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Nelson wrote:
I modified a K-> eos adapter tonight
easy to mod but first prototype needs improvements
it lacks infinity, adapter's thickness is certainly the problem.
i think my 135 will be usuable to portraits, some tests tomorrow _________________ DSLR : EOS 350D, 300D, 7D, 5D
Pentacon 50 f1.8, 135 f2.8, 200 f4;
TAIR 3S
Helios 44/2
Meyer Optik Orestegor 200mm f4 Orestegor 300mm f4
Tamron 24mm f2.5 01B, 300mm f5.6 670Au, 75 250, 300mm f5.6 SP 54B, 500mm f8 SP 55B, SP 70 210 3.5, SP 60 300
my MF lenses
EF 50 1.8 I, EF 100macro f2.8, EF 70-200 F4 L is, EFS 17-55 f2.8 is, Sigma 10-20 EX, 18-50 2.8 EX, 300 f4 hsm, 400 5.6 hsm |
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Farside
Joined: 01 Sep 2007 Posts: 6549 Location: Ireland
Expire: 2013-12-27
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Posted: Fri Mar 14, 2008 9:41 pm Post subject: |
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Farside wrote:
That'd be interesting, yeah, keep us posted. There's plenty of Prak B lenses out there for peanuts. _________________ Dave - Moderator
Camera Fiend and Biograph Operator
If I wanted soot and whitewash I'd be a chimney sweep and house painter.
The Lenses of Farside (click)
BUY FRESH FOMAPAN TO HELP KEEP THE FACTORY ALIVE ---
Foma Campaign topic -
http://forum.mflenses.com/foma-campaign-t55443.html
FOMAPAN on forum -
http://www.mflenses.com/fs.php?sw=Fomapan
Webshop EU
http://www.fomafoto.com/ |
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bob955i
Joined: 15 Apr 2007 Posts: 2495
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Posted: Fri Mar 14, 2008 9:52 pm Post subject: |
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bob955i wrote:
Including the 1.8/80 that Attila swears by. |
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Nelson
Joined: 06 Jan 2008 Posts: 618 Location: close to Paris, France
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Posted: Mon Mar 31, 2008 7:55 pm Post subject: |
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Nelson wrote:
Thickness in black paint is to remove.
Picture is not good, but here is he the Bmount of a lens IN the PK-eos adapter.
adapter on a 135mm pentacon
I discovered later that Bmount register (44.6) is close to eos register (44mm).
That is why i miss infinity.
I do not want to use a lens without infinity!
One day i may be try to grind (?!?) another PK adapter to get closer to Bmount register.
and only after that i'll do once again what i did on this one.
(hope i am clear in my explainations ?) _________________ DSLR : EOS 350D, 300D, 7D, 5D
Pentacon 50 f1.8, 135 f2.8, 200 f4;
TAIR 3S
Helios 44/2
Meyer Optik Orestegor 200mm f4 Orestegor 300mm f4
Tamron 24mm f2.5 01B, 300mm f5.6 670Au, 75 250, 300mm f5.6 SP 54B, 500mm f8 SP 55B, SP 70 210 3.5, SP 60 300
my MF lenses
EF 50 1.8 I, EF 100macro f2.8, EF 70-200 F4 L is, EFS 17-55 f2.8 is, Sigma 10-20 EX, 18-50 2.8 EX, 300 f4 hsm, 400 5.6 hsm |
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Nelson
Joined: 06 Jan 2008 Posts: 618 Location: close to Paris, France
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Posted: Sat May 08, 2010 6:04 am Post subject: |
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Nelson wrote:
now it exists !
http://cgi.ebay.fr/AF-Confirm-Prakticar-PB-B-Lens-to-Canon-EOS-EF-5D-500D-/270568225975?cmd=ViewItem&pt=UK_Photography_CameraLenses_Lens_caps_hoods_adaptors_ET&hash=item3eff1f7cb7
edit : and there are a lot on ebay _________________ DSLR : EOS 350D, 300D, 7D, 5D
Pentacon 50 f1.8, 135 f2.8, 200 f4;
TAIR 3S
Helios 44/2
Meyer Optik Orestegor 200mm f4 Orestegor 300mm f4
Tamron 24mm f2.5 01B, 300mm f5.6 670Au, 75 250, 300mm f5.6 SP 54B, 500mm f8 SP 55B, SP 70 210 3.5, SP 60 300
my MF lenses
EF 50 1.8 I, EF 100macro f2.8, EF 70-200 F4 L is, EFS 17-55 f2.8 is, Sigma 10-20 EX, 18-50 2.8 EX, 300 f4 hsm, 400 5.6 hsm |
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neldot
Joined: 09 Jan 2009 Posts: 1
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Posted: Sat May 22, 2010 6:53 pm Post subject: |
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neldot wrote:
Great information, Nelson, thanks.
Please, if you should buy the adaptor, share with us your impressions of use and results.
Actually, I still own several praktica-b lenses, but I've a Nikon dslr. But in the future... |
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koji
Joined: 21 Jul 2008 Posts: 2106 Location: Hiroshima, Japan
Expire: 2012-12-27
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Posted: Sat May 22, 2010 8:29 pm Post subject: |
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koji wrote:
Nelson wrote: |
Thickness in black paint is to remove.
......
I discovered later that Bmount register (44.6) is close to eos register (44mm).
----------------------------------------------------
That is why i miss infinity.
I do not want to use a lens without infinity!
....
(hope i am clear in my explainations ?) |
That ----- is not correct, Bmount register is 44.4mm, and its inner diameter of the mount is 38.5mm. _________________ Our Home Page has 18,200 photos in 575 directories today.
Lenses: https://www.pbase.com/kkawakami/top_level_my_lenses |
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