How does a 1 ”sensor fit into a smartphone? We’re sure Sony would like to know, but we’re curious too. Watch this video from WekiHome that completely disassembles the Xiaomi 12S Ultra, it really shows how much bigger the main camera module is compared to a module built around the 1 / 1.3 “ISOCELL GNV.
We should note that these optical formats are quite misleading, for example a 1 “sensor does not actually have a 1” diagonal. This, along with the fractions, makes the size comparisons quite confusing, but here’s a visual comparison:
Xiaomi 12S Ultra’s 1 “IMX989 camera module versus a 1 / 1.28” GNV module
Have you noticed how much space the three camera modules take up? The 5x periscope and 48MP ultra-wide cameras are packed as tightly as possible, but that still doesn’t leave much for the motherboard with the Snapdragon 8+ Gen 1 chipset. The 4,860mAh battery also needs space.
The solution is to stack two PCBs to have enough space for all components, the chipset, RAM and storage are on the “bottom” (from this point of view). Thermal paste and copper foil and a custom designed vapor chamber are used to diffuse the heat. Around 10 minutes you can see the inside of the new VC.
Either way, only the main camera module measures 11.06mm thick, which creates a powerful camera bump. This cannot be avoided, of course, the optics that can cover the entire IMX989 sensor needs vertical space (and that’s a complex 8P lens, by the way). Having said that, we leave you to the video:
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