Need information about this brass lens

[Krisgage]

Hello everyone

I found another old brass lens from the antique shop.

The inscription says

Boppel-Anastigmat “Eurynar”
G. Rodenstock Muncher
No. 11361
1:6,8 f=24cm

I need more information about this lens as I could not find anything on www

Thanks

[Orio]

Must be "Rodenstock MüncheN"

Looks like it has no shutter - perhaps a projection lens?

[no-X]

I think it's for (~100 years) old large format box camera (for slides of glass plates). I don't know, how are these cameras called in English, but they used these lenses. Lens cap or hat was used instead of shutter

Projection lenses are usually faster and lacks iris.

//edit: something like this:



I found, that Eurynars were manufactured around 1910, and they were used for large format cameras: 13x18cm up-to 35x43cm (14x17in).

[Krisgage]

[Krisgage]

[Gurdie]

I think the right name is Doppel Anastigmat, meaning Double Anastigmat

Please check

http://www.cameraeccentric.com/html/info/rodenstock_2.html (page 18 is about Eurynars).

There´s something about Rodenstock Eurynars also at www.largeformatphotography.info.

[Krisgage]

[luisalegria]

I had one like this but smaller, 18cm

http://forum.mflenses.com/rodenstock-eurynar-18cm-f-6-8-on-bellows-t11205,highlight,rodenstock+doppel.html

A very nice, sharp lens. Worth trying out on the DSLR.

The Eurynars were made for several decades, but yours is a very early one I think, before 1910, because of the very low serial number.

These were supplied in barrel (no shutter) like this for use in cameras with focal-plane shutters or shutters that were not iris-type, like Packard shutters.

If you are into large format, that one should cover 8x10, barely.

[Krisgage]

[luisalegria]

Hi Kris,

These are some of my mountings -

http://forum.mflenses.com/wollensak-enlarger-105-4-5-on-bellows-t6369,highlight,wollensak+enlarger.html

http://forum.mflenses.com/bauschandlomb-tessar-164-4-5-enlarger-lens-on-bellows-t11018,highlight,bausch+lomb.html

http://forum.mflenses.com/wollensak-enlarging-raptar-162-4-5-on-bellows-t7250,highlight,wollensak+enlarger.html

OM-bellows should be just as good as any. I assume there is a OM female mount on the lens end of the bellows.

My usual starting point is a body-cap, a T-mount or a reverse-adapter. You can get these for OM. They should go on the lens end of the bellows.

The body cap is only good for very small lenses. I use plastic ones. Drill a hole just big enough to screw the lens into, it becomes a very small lens board. If you have the ring for lens board mounting for the lens its even better. If not a press-fit is needed, there are several ways to do that, sometimes even glue works. And if there is a step-up or step-down adapter available for the thread that can also serve as a replacement ring.

T-mount is easiest. Take out the inner ring by loosening the three screws until the ring comes out. If you are lucky the lens will be just the right size ( to fit inside the T-mount ) and can be gripped by the screws. Usually I wrap the back end of the lens with tape so the screws have something to grip and it doesn't scratch the lens.

Note that the inside diameter of T-mounts (and the size of ring) are not standard. So some brands can work and others not.

I have also modified a T-mount by replacing the screws with much longer ones, so it works for a bigger range of lenses.

The reverse adapter will work if you are lucky and there is a step-up or step-down ring available that fits the thread on your lens. You will also need a F-F thread adapter and maybe another step-up or step-down ring to match your reverse adapter.

So, as an example, if the Rodenstock thread is 55mm and the reverse adapter thread is 52mm

- Reverse adapter(52mm)+52-58mm Step-down+58mm F-F + 55-58mm step-down

[Krisgage]

Hi Luis

Thanks for the details. I will give it a shot when my macro tubes comes and whatever rings I could find over here. Hope I could make it works just like CZJ Tessar.

[Krisgage]

Yesterday, I went to test this lens again with my OM bellow.



more photos over here.

http://forum.mflenses.com/viewtopic,p,144609.html#144609