Stacking R-M + M-L Leica adapters?

[Winedemonium]

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Is anyone in practice stacking the Leica R adapter M and the M adapter L for use on SL/2/3 etc? 

I already have the M adapter L, and a clean used R adapter M just came up. I've read that these may be combined and will give ROM info to the SL/2/3 camera. If you are doing this in practice I'd welcome hearing about your experience. If its a futz or hassle, I'll avoid this path.

(I realise the R adapter L is the better technical choice, but its twice the price of the R-M, and I have the M-L).

Thank you.

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[beewee]

26 minutes ago, Winedemonium said:

I've read that these may be combined and will give ROM info to the SL/2/3 camera.

The camera will only detect that you have a R adapter M and let you select your R lens from a list. No information is available from R lenses with ROM.

 The stacked adapter will work fine on most R lenses but may vignette on some large aperture telephoto lenses, at least from what I’ve read but I only have experience with the APO Telyt R 180/3.4.

 

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Edited Thursday at 02:28 PM by beewee

[beewee]

I think a more important question to ask is why shoot R lenses when there are so many great L mount lenses from Sigma with AF that will outperform almost all R lenses and has native compatibility on L-mount and costs about as much as R-L adapter, often less.

I think there are very few R lenses that are really worth adapting from an optical performance point of view and even then, without AF, the only other advantage I see is maybe size but it’ll still lose in the weight department. You need to really love MF or the look of a specific lens to justify shooting R lenses these days.

[MikeZ]

While I see beewee point, I have about a half-dozen non-ROM R lenses that I'd like to use/try-out on my SL3-S simply because.  Multiple adapters may be a bit klugey, but may work and provide a different platform for creativity's sake.

[BernardC]

The limitation with double adapters is that you don't get any data transmission, so you need to choose your lens manually to set IBIS. ROM lenses do that automatically with the R-adapter-L. As @beewee pointed-out, you might see some vignetting with fast teles, but not with most lenses.

One other option is to get a codeable third-party R-M adapter, which will pass a focal length to the M-adapter-L. I've gone this route with a favourite non-Leica 50. It's coded as a Summicron 50, so I don't have to bother manually setting the focal length when I swap lenses. Very convenient, especially since there aren't many L-mount adapters that can communicate with the camera (mainly Sigma's EOS adapter and copies).