Extension tubes Leitz 14158 and 14135

[Bohns]

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Hello all,

I have (but never used) a set of extension tubes Leitz 14158-1, 14135 and 14158-2.

At least both 14158 tubes (optical path about 25 mm long) shall be assembled together to allow attaching a R lens to a R body. If adding in between the 14135 tube, optical path reaches roughly 50 mm.

I have 2 questions :

1. Does anybody knows what would be the reproduction ratio with a Macro-Elmarit-R 60 whose native ratio is 1:2 when adding both 14158 tubes (25 mm) or all 14158+14135 tubes (50 mm) ?
2. what is the function of the button on the side of the top 14158-2 tube, close to the lock ?

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I intend to use those extension tubes with the Macro-Elmarit-R 60 on my M11-P with the Visoflex 2 to « scan » my negatives and benefit from the orientable viewfinder, but I would prefer being close to or above 1:1, even with 60 MP.

Regards,

Stef.

Edited April 21, 2024 by Bohns

[01af]

vor 46 Minuten schrieb Bohns:

At least both 14158 tubes (optical path about 25 mm long) shall be assembled together to allow attaching a R lens to a R body. If adding in between the 14135 tube, optical path reaches roughly 50 mm.

Okay ... let's start over: What are the lengths of each of the tubes?

[01af]

vor 48 Minuten schrieb Bohns:

I intend to use those extension tubes with the Macro-Elmarit-R 60 mm on my M11-P with the Visoflex 2 to 'scan' my negatives and benefit from the orientable viewfinder, but I would prefer being close to or above 1:1 ...

The magnification is e:f (e = extension, f = focal length). With the lens set to infinity, the built-in extension is zero. With the 60 mm lens set to 1:2, the built-in extension is 30 mm. The length of the extension tubes adds to that. So, for example, with the fully extended 60 mm lens plus a 25 mm extension tube, the magnification will be 55:60, or 1:1,09. To go above 1:1, you'll need extension tubes with a total length of more than 30 mm ... which apparently is what you have.

[nbgronlie]

The button on the side lets you trigger the aperture of an R-lens before triggering the exposure button on the camera. At one point, Leica made a dual cable release that would trigger both of these buttons in the correct sequence. That is, stop down the lens first, then fire the shutter.

[dpitt]

The Leica Elmarit 60 R is a great macro lens. To calculate the magnification with different additional tubes this macro calculator can help.
The standard Leica extension ring will make it reach 1:1.
With bellows the Elmarit can go much further, 2:1 is not a problem if you can deal with the shorter object distance.

 

[Bohns]

Thank you all, @01af, @nbgronlie and @dpitt 😃

3 hours ago, dpitt said:

With bellows the Elmarit can go much further, 2:1 is not a problem if you can deal with the shorter object distance.

Scanning films allows dealing with a short object distance. What is the ref. of the bellow you mention ?

Regards,

Stef.

[dpitt]

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46 minutes ago, Bohns said:

Thank you all, @01af, @nbgronlie and @dpitt 😃

Scanning films allows dealing with a short object distance. What is the ref. of the bellow you mention ?

Regards,

Stef.

Yes you can go over 1:1 for film scanning, although I do not see why you would want to crop the original negative.
I use the bellows that comes with my Macro 100mm R (11270), you can mount any regular R lens on it. For film scanning, the 100mm is a bit easier to work with and they are very cheap for the performance.

Both the lens(11230) head and the bellows (16860) can be found separately

100mm_f/4_Macro-Elmar-R

Edited April 22, 2024 by dpitt