Rubinar 500/5.6 - lubrication and other stuff.
 

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.

Rubinar 500/5.6 - lubrication and other stuff.
 

All my bird photos has been taken with 500 mm and 1000 mm russian reflex
lenses and with or without 1.5 or 2.0 teleconverter (both made in japan).
and the page is (those photos are in pdf):
http://personal.inet.fi/koti/juha.heinonen/Birds.html


--
Juha Heinonen
Seilimaki 17 B 8
02180 ESPOO
FINLAND
E-mail:
URL: http://personal.inet.fi/koti/juha.heinonen

Rubinar 500/5.6 - lubrication and other stuff.
 

"Rudy Benner" 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 (08) 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.

Rubinar 500/5.6 - lubrication and other stuff.
 

wrote in message
...
"Rudy Benner" 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......

Rubinar 500/5.6 - lubrication and other stuff.
 

wrote in message
...
"Rudy Benner" 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 (08) 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/Sea...tegoryCode=LUB

Some research seems to indicate that NYOIL or HELICAL GREASE are what I
need. Any thoughts on that Paul?

Rubinar 500/5.6 - lubrication and other stuff.
 

wrote:
"Rudy Benner" 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.

Rubinar 500/5.6 - lubrication and other stuff.
 

"Rudy Benner" writes:

wrote in message
...
"Rudy Benner" 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 (08) 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/Sea...tegoryCode=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 (08) 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.