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Next: Q. for Ken Rockwell
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External
Since: Jul 04, 2006
Posts: 44
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(Msg. 1) Posted: Fri Dec 01, 2006 12:45 pm
Post subject: Rubinar 500/5.6 - lubrication and other stuff.
Archived from groups: rec>photo>digital (more info?)
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I recently came into possession of a Rubinar 500mm/5.6 reflex lens. Real
cheap, like new. Came with M42/Nikon adapter.
I need an extension tube and/or a teleconverter to enable me to connect this
to my Nikon. No problem there, I have the right stuff on order.
Once I have the extension tube, I will need to recalibrate the focus, no
problem there, its a 2 minute job.
While I have the lens partly disassembled , I am thinking I should go a bit
further and change the lubricant for the focus, its really stiff.
I need a suggestion for a commonly available lubricant, one which will work
well in sub zero temperatures.
I also find the insert for the tripod mount to be a bit loose, I am thinking
I can use some epoxy to secure it. Otherwise I do not think I would like to
trust my camera to the mount. A sky hook would be nice but I cannot afford
one.
The price was right, but I wonder if it was much of a bargain. Time will
tell.
Any thoughts?
r. |
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External
Since: Sep 16, 2006
Posts: 3
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(Msg. 2) Posted: Fri Dec 01, 2006 7:41 pm
Post subject: Re: Rubinar 500/5.6 - lubrication and other stuff. [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
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External
Since: Aug 23, 2005
Posts: 86
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(Msg. 3) Posted: Sat Dec 02, 2006 6:55 am
Post subject: Re: Rubinar 500/5.6 - lubrication and other stuff. [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
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"Rudy Benner" <bitbucket RemoveThis @rudybenner.com> writes:
> While I have the lens partly disassembled , I am thinking I should
> go a bit further and change the lubricant for the focus, its really
> stiff. I need a suggestion for a commonly available lubricant, one
> which will work well in sub zero temperatures.
There isn't one. Go find a microscope place, and ask them for some
grease to use. Be nice and they will possibly give you the small smear
you need for free.
Do NOT even THINK of using normal grease or oil, it will coat the optics
and inner surfaces and trash the lens.
--
Paul Repacholi 1 Crescent Rd.,
+61 (0  9257-1001 Kalamunda.
West Australia 6076
comp.os.vms,- The Older, Grumpier Slashdot
Raw, Cooked or Well-done, it's all half baked.
EPIC, The Architecture of the future, always has been, always will be. >> Stay informed about: Rubinar 500/5.6 - lubrication and other stuff. |
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External
Since: Jul 04, 2006
Posts: 44
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(Msg. 4) Posted: Sat Dec 02, 2006 6:55 am
Post subject: Re: Rubinar 500/5.6 - lubrication and other stuff. [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
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<prep.TakeThisOut@prep.synonet.com> wrote in message
news:874pse64ot.fsf@k9.prep.synonet.com...
> "Rudy Benner" <bitbucket.TakeThisOut@rudybenner.com> writes:
>
>> While I have the lens partly disassembled , I am thinking I should
>> go a bit further and change the lubricant for the focus, its really
>> stiff. I need a suggestion for a commonly available lubricant, one
>> which will work well in sub zero temperatures.
>
> There isn't one. Go find a microscope place, and ask them for some
> grease to use. Be nice and they will possibly give you the small smear
> you need for free.
>
> Do NOT even THINK of using normal grease or oil, it will coat the optics
> and inner surfaces and trash the lens.
>
> --
Yes, good point.
I have removed a substantial amount of grease from the accessible threads
without fully removing the front half of the lens. Already its much better.
<....Lets see now, I live in a small town in northern Ontario, where will I
find a microscope place......> >> Stay informed about: Rubinar 500/5.6 - lubrication and other stuff. |
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External
Since: Jul 04, 2006
Posts: 44
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(Msg. 5) Posted: Sat Dec 02, 2006 2:03 pm
Post subject: Re: Rubinar 500/5.6 - lubrication and other stuff. [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
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<prep.DeleteThis@prep.synonet.com> wrote in message
news:874pse64ot.fsf@k9.prep.synonet.com...
> "Rudy Benner" <bitbucket.DeleteThis@rudybenner.com> writes:
>
>> While I have the lens partly disassembled , I am thinking I should
>> go a bit further and change the lubricant for the focus, its really
>> stiff. I need a suggestion for a commonly available lubricant, one
>> which will work well in sub zero temperatures.
>
> There isn't one. Go find a microscope place, and ask them for some
> grease to use. Be nice and they will possibly give you the small smear
> you need for free.
>
> Do NOT even THINK of using normal grease or oil, it will coat the optics
> and inner surfaces and trash the lens.
>
> --
> Paul Repacholi 1 Crescent Rd.,
> +61 (0 9257-1001 Kalamunda.
> West Australia 6076
> comp.os.vms,- The Older, Grumpier Slashdot
> Raw, Cooked or Well-done, it's all half baked.
> EPIC, The Architecture of the future, always has been, always will be.
http://www.micro-tools.com/store/SearchByCategory.aspx?CategoryCode=LUB
Some research seems to indicate that NYOIL or HELICAL GREASE are what I
need. Any thoughts on that Paul? >> Stay informed about: Rubinar 500/5.6 - lubrication and other stuff. |
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External
Since: Dec 01, 2006
Posts: 13
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(Msg. 6) Posted: Sat Dec 02, 2006 3:04 pm
Post subject: Re: Rubinar 500/5.6 - lubrication and other stuff. [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
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prep.RemoveThis@prep.synonet.com wrote:
> "Rudy Benner" <bitbucket.RemoveThis@rudybenner.com> writes:
>
> > While I have the lens partly disassembled , I am thinking I should
> > go a bit further and change the lubricant for the focus, its really
> > stiff. I need a suggestion for a commonly available lubricant, one
> > which will work well in sub zero temperatures.
>
> There isn't one. Go find a microscope place, and ask them for some
> grease to use. Be nice and they will possibly give you the small smear
> you need for free.
>
> Do NOT even THINK of using normal grease or oil, it will coat the optics
> and inner surfaces and trash the lens.
Not saying you're wrong, but I lubricated both my rubinars with normal
lythium grease. I think that was 2 years ago. Still works fine, see:
http://zenit-photo.com/gallery/details.php?image_id=170
That's a 100% crop.
FWIW image quality of my 500/5.6 is not as good as 1000/10. >> Stay informed about: Rubinar 500/5.6 - lubrication and other stuff. |
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External
Since: Aug 23, 2005
Posts: 86
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(Msg. 7) Posted: Sun Dec 03, 2006 3:43 pm
Post subject: Re: Rubinar 500/5.6 - lubrication and other stuff. [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
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"Rudy Benner" <bitbucket DeleteThis @rudybenner.com> writes:
> <prep DeleteThis @prep.synonet.com> wrote in message
> news:874pse64ot.fsf@k9.prep.synonet.com...
>> "Rudy Benner" <bitbucket DeleteThis @rudybenner.com> writes:
>>
>>> While I have the lens partly disassembled , I am thinking I should
>>> go a bit further and change the lubricant for the focus, its really
>>> stiff. I need a suggestion for a commonly available lubricant, one
>>> which will work well in sub zero temperatures.
>>
>> There isn't one. Go find a microscope place, and ask them for some
>> grease to use. Be nice and they will possibly give you the small smear
>> you need for free.
>>
>> Do NOT even THINK of using normal grease or oil, it will coat the optics
>> and inner surfaces and trash the lens.
>>
>> --
>> Paul Repacholi 1 Crescent Rd.,
>> +61 (0 9257-1001 Kalamunda.
>> West Australia 6076
>> comp.os.vms,- The Older, Grumpier Slashdot
>> Raw, Cooked or Well-done, it's all half baked.
>> EPIC, The Architecture of the future, always has been, always will be.
>
> http://www.micro-tools.com/store/SearchByCategory.aspx?CategoryCode=LUB
>
> Some research seems to indicate that NYOIL or HELICAL GREASE are what I
> need. Any thoughts on that Paul?
Maybe, I don't know the specific stuff you quote. Ring or visit your
local uni and ask one of the lab techs what they use, and where to get it.
The above seem OK though.
--
Paul Repacholi 1 Crescent Rd.,
+61 (0 9257-1001 Kalamunda.
West Australia 6076
comp.os.vms,- The Older, Grumpier Slashdot
Raw, Cooked or Well-done, it's all half baked.
EPIC, The Architecture of the future, always has been, always will be. >> Stay informed about: Rubinar 500/5.6 - lubrication and other stuff. |
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