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Anthsmith
04-12-2018, 12:46
Hi I came across this lens in a bundle from an auction, its a leitz Wetzlar, and I think its a wide angle from viewing through it on a ground glass screen. It says on the lens front rim Leitz Wetlar 2*.. Has anyone any ideas Thanks.

Anthony

p.giannakis
04-12-2018, 12:53
Are there any aperture blades, can you set the aperture?
Does it have a focusing ring? If not it might be an enlarger lens.

ptpdprinter
04-12-2018, 12:56
Looks like a microscope objective - the lens closest to the glass slide. It probably screwed into a rotating turret of different magnifications.

Vince Lupo
04-12-2018, 12:57
Might be one of these: http://www.savazzi.net/photography/photomacrolenses.htm

Greyscale
04-12-2018, 12:59
Leitz Focotar 2” enlarger lens.

mpaniagua
04-12-2018, 13:00
Looks like a microscope objective - the lens closest to the glass slide. It probably screwed into a rotating turret of different magnifications.


Agree. Sure looks like a microscope lens.


Remember that Leitz was basically a microscope maker before it went into making Leicas.


Marcelo

Anthsmith
04-12-2018, 13:16
It has a aperture ring lug the same as a 50mm collapsible elmar, it has a serial number 804182.

Thanks

Roger Hicks
04-12-2018, 13:23
Can we see the front as well please?

Cheers,

R.

Anthsmith
04-12-2018, 13:48
It is showing some lens separation also unfortunately

mpaniagua
04-12-2018, 13:49
I think Greyscale may be right. Enlarger lens.

Regards

Marcelo

Roger Hicks
04-12-2018, 14:29
It is showing some lens separation also unfortunately

Thanks. Max aperture? Focal length? (If marked, of course).

Cheers,

R.

Anthsmith
04-12-2018, 15:52
Sorry but i don't have that information would to work it out with a ground glass screen and a brick wall or similar regular form of object but haven't got that far.

Thanks Anthony

Anthsmith
04-12-2018, 16:13
I think after a little more research that the element on the front is a Elpik 2 ?, but why it is on a lens I do not know ?.

rfaspen
04-12-2018, 18:24
Microscope objective.

rbiemer
04-12-2018, 19:37
The ELPIK is a supplementary/close up lens attachment for the 50mm f/3.5 Elmar, I believe.
Not sure what it would do if it were attached to an enlarging lens. Maybe give a larger print size for a given height?
I was looking around on line and didn't see any Leitz microscope objectives that looked like this.
I did find another forum that may be worth searching:
http://www.photomacrography.net/forum/index.php

Rob

Greyscale
04-12-2018, 20:02
This is way too big to be a microscope lens.

rbiemer
04-12-2018, 20:08
This is way too big to be a microscope lens.

Can't argue with this.
I do think you are correct in saying it's an enlarger lens.
I do wonder, though, if it is maybe an incomplete lens? Missing an outer barrel of some kind?

Rob

Greyscale
04-12-2018, 20:13
This is a Leitz microscope lens, mounted in an M42 lens cap for some kind of photomicrography that I could not get to work. Microscope objectives are tiny little things. And yes, I think that it is an incomplete lens.

https://farm6.staticflickr.com/5575/14730413175_59dd102343_c.jpg (https://flic.kr/p/orFdCX)
Canon F-1 Microphotography hack (https://flic.kr/p/orFdCX) by Mike Novak (https://www.flickr.com/photos/greyscale3/), on Flickr

rfaspen
04-12-2018, 21:59
Microscope objective.

RMS (Royal Microscope Standard) is 0.7965" x 36TPI. 0.7965" is 20.2mm (about 2cm). From the images in the OP, I would estimate the mount of this lens is about 2cm diameter. The threads and lens mount appear much like some of my microscope objectives. Leitz made a number of microscope lenses over the years. I have a couple. One is much larger than this though :) (for a low mag bino scope).

Sure looks like a microscope objective to me.

rfaspen
04-12-2018, 22:04
Alternatively RMS = Royal Microscopist Society, or some variation of this. The RMS mount has become the primary standard mount for microscope objectives for quite a while, especially for microscope equipment produced in Europe and "the Old World". The JIS standard also exists, more recently, for some equipment (but not all) produced in Japan. A microscope objective made by Leitz is almost guaranteed to be RMS.

rfaspen
04-12-2018, 22:10
Guesstimating from the image in the OP with a ruler included, this fits the scenario. I'm guessing the microscope objective in the OP is a rather old one (perhaps as old as 1920s or 30s?), but appears to be RMS.

This is a Leitz microscope lens, mounted in an M42 lens cap for some kind of photomicrography that I could not get to work. Microscope objectives are tiny little things. And yes, I think that it is an incomplete lens.

https://farm6.staticflickr.com/5575/14730413175_59dd102343_c.jpg (https://flic.kr/p/orFdCX)
Canon F-1 Microphotography hack (https://flic.kr/p/orFdCX) by Mike Novak (https://www.flickr.com/photos/greyscale3/), on Flickr

Anthsmith
04-13-2018, 01:53
I believe it is an incomplete elmar or such like which is missing its front element and possibly iris, it is not an enlarger or a microscope objective, totally wrong design for that and it has the iris lug on the side-some one has made a bit of a frankenstein in my opinion so I will have to see what I can sort out as i have some leitz front elements in my spares collection..