Stacking rings for macro with macro-elmar 90mm

[pyracine]

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Hello all,

 

I use the macro-elmar 90mm combined with old the macro adapter (old model with goggles 14409)

Will I be able to achieve greater magnification if I use rings such as oufro or cheaper alternatives stacked on the macro adapter ?

Of course I would lose RF coupling but I would use LV then. 

Any opinion on these rings ? 

https://www.kentfaith.fr/search_m36291/KF06.321_adaptateur-leica-m-à-adaptateur-leica-m-mount-m-ext-10mm

I see there are 2 versions : 8mm or 10mm extensions. Which one(s) to choose in order to achieve 1:2 or even 1:1 magnification on the macro-elmar + adapter with goggles ?

 

Thanks !

Edited December 2, 2020 by pyracine

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[lct]

No idea but the two Leica macro adapters (with and w/o goggles) can be stacked together so all hope is not lost.

[fotomas]

To get to 1:1 you need roughly another 90 mm extension. 
I have the googles extension from the old Macro-Elmar, the new macro adapter and a set of Novoflex extension tubes. If I combine all this together this is how close I got:

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Made with the old Macro-Elmar 90 mm. Don't know the scale but I guess between 2:1 and 3:1.

But a small shadow at the edges comes in, as you can see. Also got the feeling, that the Leica M lenses are not optimized for scales like this, since there normally isn't any need for this. Could be, that you got better results with special macro lenses that are made for this purpose.

[pyracine]

Thanks !

What are the extensions of the leica macro adapters ?  

The new macro seems to be btw 18mm et 30mm, from what I have found in the manual.

The old one would be + - 14mm (my measurements)

So a 10mm ring would bring me close to 1:2 , for which the macro-elmar is optimized or intended to be used.. More magnification than that and cropping / upscaling could be as good an option.. no ? 

I ask this because I use the 55mm micro-nikkor and the PK13 extension-ring which brings 1:1, but at such a close distance the DOF is so thin that it is often better to crop / upscale (otherwise you have to stop down a lot and I wonder if the benefit of close-up is not lost with diffraction..?)

 

 

[tommonego@gmail.com]

I was having problems sorting out the Leica extension tubes I decided to go Nikon on my 65 Elmar. I was trying to no have to use a Visoflex mirror box when using the lens on my CL. So I got a M to Nikon adapter and a 14mm extension Nikon extension tube and use my Nikon to L adapter. It was a bit of trial and error finding the infintiy focus point. Now I can use the more available Nikon tubes for extension. One suggestion I received was to use the 90 Elmarit focusing tube, that didn't get me to an infinity focusing spot.