Sigma or Leica 1.4 L mount teleconverter

[KaKa]

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Dear all,

As a wildlife- and Bird photographer I am considering to purchase a 1.4 converter to my 100-400mm lens for the SL2-S.

Since the Sigma and Leica converters are showing a high price difference I am wondering whether any advise regarding which one to buy can be advised.

Thanks for sharing your thoughts!

[Ivar B]

11 minutes ago, KaKa said:

Dear all,

As a wildlife- and Bird photographer I am considering to purchase a 1.4 converter to my 100-400mm lens for the SL2-S.

Since the Sigma and Leica converters are showing a high price difference I am wondering whether any advise regarding which one to buy can be advised.

Thanks for sharing your thoughts!

Good question. Is your 100-400 the Sigma branded lens or the Leica rebranded lens? I don`t think it makes much difference, though. 

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[tritentrue]

The Sigma appears to be the same optical formula and similar in other ways as well, as does the Lumix counterpart.  All are made in Japan.

When I had the SL 100-400mm I used the Leica 1.4X with it, with disappointing results.  I got better results with a Sigma TC-2011, but it did not show up in EXIF data, where only the lens info was recorded.  I didn't see any issues with stabilization.  

Poor performance (both AF and optical) with the 1.4X on the SL2-S was what prompted me to ditch the lens.