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Anyone adapting Mandler M-mount glass to a Canon R5 / R8?

  
 
ruslanrusu
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p.1 #1Anyone adapting Mandler M-mount glass to a Canon R5 / R8?


hi here!

I keep seeing the Mandler 35/2, 50/1.4 posted on M bodies but almost nothing on Canon RF. Anyone here running one on an R5 or R8?
Mainly wondering how it holds up on the R5 sensor — corner smearing, color shift wide open, that sort of thing. And whether the R8 is any easier on it at lower resolution. Also curious which M to RF adapter people are using and whether infinity lands where it should. Would love to see some samples if anyone has them, wide open especially. Thanks



Nov 02, 2026 at 10:41 PM
philip_pj
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p.1 #2Anyone adapting Mandler M-mount glass to a Canon R5 / R8?


From looking at your concerns (smearing, resolution, sensor specificity, infinity exactitude) they are very unlikely to be lenses you would like. Precision of performance was never a concern in the era from which the E46 pre-asph originates. The 50mm is a modernised 1962 lens that was designed to update (not replace) the essential character of the original and much-loved Walter Mandler Summilux.

'The Original Lineage: Dr. Walter Mandler designed the iconic second- and third-generation pre-aspherical Leica Summilux 50mm f/1.4 lenses (starting in the early 1960s, featuring 7 elements in 5 groups), which maintained a classic, low-contrast, dreamy rendering for decades.'

A very large number of images taken with them either use film or pay homage to the film era. You can glean what they are about from their excellent Gallery (with around 90 images):

https://mandler.shop/blogs/photography-wall

These are artists' lenses. They exist in a niche at the far opposite end of the spectrum, compared to the concerns of modern Canon users.



Nov 03, 2026 at 04:31 PM
rscheffler
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p.1 #3Anyone adapting Mandler M-mount glass to a Canon R5 / R8?


With regard to edge sharpness issues, the Canon sensor stack is thinner than Sony's, so results should be closer to what you're seeing from Leica M images. With regard to edge color shift, the R5 and R5II, the later of which is a BSI sensor, seem to handle this well with most M lenses in this focal length range that are not designed specifically for digital performance optimization. The R8 is effectively the same sensor as the R6II and likely will result in edge color shift.

As Philip alludes, neither of these lenses are really about high wide open across-the-frame technical performance.



Nov 03, 2026 at 04:45 PM







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