Announced in mid-January, Samsung’s ISOCELL HM3 108-megapixel sensor was both a “wow!” and a “wtf?” moment for smartphone cameras. It’s an insane resolution for a smartphone, based on the raw pixel count alone, but it offers a lot of potential advantages for computational photography.

It’s only been released in the Samsung Galaxy S21 ultra so far, and it’s not yet made it into any other brand’s smartphones (but there are likely a few on the way). But Samsung has released a video “introducing” the sensor (4 months after its release) going into detail about how the sensor actually works.

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