Canon has just announced ME20F-SH camera. This specialized camera is capable to shoot at ISO up to 4,000,000 (10 times more than the new announced Sony a7SII)! So far, this is definitely a niche product for the professional production in the world.
Canon ME20F-SH will be available in December, 2015 and the price is about $30,000.
The video below shows great examples of shooting at such high ISO, from night to day!
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