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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.
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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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