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Thanks. Anything in English?

 

I don´t think so.

It´s a small manufacturer, who has develloped this adaptor (and some other products for Leica).

The fact that Norbert Rosing* is using it, may be interessting for you.

Trying to "read" a gurrgle translation may be helpfull.

 

The homepage:

Leibfritz Konstruktion

Leibfritz Konstruktion

 

contact:

info@lei-ko.de oder an info@hildebrand-wolfmueller.de.

 

 

* in Germany a well known photographer (stills and nature )

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  • 2 weeks later...

I now have one of these adapters here at our store, along with a few other products that he makes. Everything is beautifully engineered and designed. The adapter will physically fit any R lens, however you can only mount it to the S camera if the rear element of the R lens stays within the boundaries of the adapter. For example, I have here a Leica Summilux-R 80mm f/1.4, which works fine on the S, however I cannot focus it any farther than about 2 meters. If I try to go farther, the rear lens element will hit the camera's mirror.

 

We've also acquired a right angle finder for the S. I'll be testing both of these products in the very near future!

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I now have one of these adapters here at our store

 

The forum sotware needs an emoticon for 'making a mess of keyboard with drool'.

 

I'll be testing both of these products in the very near future!

 

I'd be especially interested to hear of your tests with long lenses and the R APO extenders.

Edited by wildlightphoto
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This is what happens when you put a Leica Elmarit-R 28mm f/2.8 E55 on that adapter onto an S2 and focus it at minimum distance. I was at f/8 focused about 3 inches away from the car:

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This is 100% full frame, no cropping. Wide open at f/2.8 the lens exhibits some minor vignetting, but stopped down, there is almost none! Amazing for a sensor that's 50% larger than the lens was originally designed to cover.

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So it seems some Leica-R lenses have sufficient clearance for the S mirror box. A repairman can then adjust the focus infinity point for the different extension required by the S? Is that how it could work?

 

In the end, you'll have some R-lenses that will focus correctly on the S, but focus waaaaay beyond infinity on the R?

 

Potentially dang exiting.

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After additional testing with a number of lenses, I believe this adapter is more of a novelty than anything else. With no (unmodified) lens was I able to focus anywhere near infinity, my best success was with using a 280mm, I was able to focus to about 40 feet. The lenses that I tried: 28mm f/2.8, 80mm f/1.4, 100mm f/2.8 APO-Macro, 180mm f/2.8 APO, 105-280mm f/4.2, and 35-70mm f/2.8. I was especially curious about the 35-70mm, but it can only used from about 45-70mm because the rear element extends too far out and would hit the mirror. And it doesn't focus farther than 3 feet.

 

I am not sure how successful you would be modifying a lens shorter than 280mm, I am also not sure how much tolerance is built into the lens beyond infinity. I think if you had lenses 280mm or longer, you would not have a problem having them modified to work on the S with infinity focus, but you would not be able to practically use them on an R camera. However with shorter lenses, the adapter is only useful for macro focusing, I don't think it would be possible to modify a lens such as the 80mm f/1.4 or 100mm f/2.8 to focus at infinity, not to mention the fact that the rear element on the 80mm will hit the mirror if you focus past 2m or so.

 

There are enough useful lenses within the Leica S lens lineup that I don't think it would be worth it to switch to the S system solely for this adapter. However, there are currently no native lenses for the S longer than 180mm, so if you had a collection of R telephoto lenses that you weren't using, and an S camera, then I would try having a lens modified and see how well it works!

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... my best success was with using a 280mm, I was able to focus to about 40 feet....

 

It sounds PERFECT for my uses. I'd need a longer lens too... a modular APO-Telyt for example. I can live without lenses shorter than 280mm, and anything beyond 40' is too far away. The next trick is to raise some serious cash :eek:

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If I was going to have a rare/expensive Leica R telephoto lens modified, most likely I would only trust Leica Germany to perform the work. I wouldn't want to risk anyone other than Leica performing that service. I'm not sure how much "room" there is in the lens to extend infinity focus beyond it's original position but I am going to investigate this a bit.

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I received the adapter today. It worked on the APO f2.8 400 from 9 ft to 140 ft. Excellent sharpness and contrast on the S. If the infinity focus can be adjusted, this will be the perfect solution for long telephoto shots on the S system.

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  • 4 weeks later...

I tested several Leica R lenses on my Alpa FPS camera with a 54x40mm IQ digital back in order to find out the usable image circles (at +/- f8 at infinity). I want to share the results with you because it's of interest which of them cover the image circle of the Leica S/S2 45x30mm sensor.

 

Let's start with the two longest focal lengths I had available, the Leica R 180f2.8 Apo and the Leica R 100f2.8 Apo-Macro.

 

Both lenses have an image circle easily covering the S sensor size and are sharp corner to corner at any aperture.

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Leica R 60f2.8 Macro: Image circle slightly larger than S sensor and excellent sharpness into the corners, therefore very suitable for the S.

 

Leica R 19f2.8: Image circle about 47mm (smaller than S sensor). Sharpness pretty well at f8-f11 within an image circle of about 42mm.

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Edited by chrismuc
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