Additional info on the cheap Chinese 7Artisans 50mm f/1.1 lens for Leica M-mount

The cheap Chinese 7Artisans 50mm f/1.1 lens for Leica M-mount triggered a lot of interest and I received several questions from readers. While I am trying to get a lens for review from the manufacturer, here is some additional information (the lens is currently in stock at Amazon and eBay):

The first prototype version of the lens had a 52mm filter thread:

The 7Artisans 50mm f/1.1 lens can be 6-bit coded according to this picture:

The same 7Artisans lenses are also branded as DJ-Optical and they have several other lenses available for different mirrorless mounts (including a 50mm f/1.0):

More pictures of the DJ-Optical 50mm f/1.1 lens for Leica M-mount:

DJ-Optical also has a 50mm f/0.95 lens listed on their website that appears to be also for Leica M-mount:

According to the lens diagram on the box, the 7artisans 50mm f/1.1 lens is an Ultron design with an enhanced rear group (with the entrance pupil on the right and the exit pupil on the left):

The lens has 12 aperture blades (one of the initial slides wrongly displayed 7 aperture blades):

Additional sample photos:

Thanks for all the info Biroshak and Mistral75! For more information see the comments section of this post.

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