It became a hot topic online when Zack Nelson dissected a smartphone from a slot. JerryRigEverything took the Xiaomi 12S Ultra to look at the inside and folded it with the fact that Its main camera sensor isn’t exactly 1 inch as advertised by Xiaomi, measuring 8.8mm wide, 13.2mm long, or even 15.86mm diagonal, it’s far from the figure 25.4m. m converted from 1 inch a lot in all dimensions
Why are our fingers not equal?
Measured from any angle, it’s not close to 1 inch at all.
If you watch Zack’s clip until the end, he actually explains why. “Why the camera sensor Xiaomi 12S Ultra It’s less than 1 inch in size” already at the end of the video.
Zack explained that the 1-inch size was an 80-year-old measurement, when video cameras used vacuum lamps. Also known as cathode ray tube. Some call it a video camera tube. to pass electrons to the image sensor. Measuring from a cylindrical tube that covers a sensor of the same size as the Xiaomi 12S Ultra uses, it’s exactly 1-inch.
In fact, it is measured in this manner.
How is the actual size of the image sensor measured?
What is the actual size of a 1 inch sensor?
The next interesting question is, is a 1-inch sensor, or any other size the manufacturer has said, what is its actual physical size?
About this, PetaPixel had already written regarding it when Sony launched. Xperia PRO-I Which highlights the 1-inch camera sensor like the Xiaomi 12S Ultra by means of “multiplying 2/3 with the sensor size as the manufacturer says”
For example, the case in question, 1 inch, would mean 1 × 2/3 = 0.66 inches, or approximately 16 mm, which would be a consistent result with a diagonal of 15.86 mm as mentioned above. above and because it is measured from a circle There are some discrepancies in the numbers.
The result is 0.66 inches, according to the theory multiplied by 2/3.
relics from the past that creates confusion nowadays
In conclusion, Xiaomi does not deceive us. and not exaggerated It’s just a way of sizing the camera sensors of the past that is still being used today. Although cathode ray tubes were no longer in use following the introduction of CCD and CMOS sensors in 1980, and other smartphone or camera makers use a similar approach to size identification. this is no different
Source: JerryRigEverything
refer : Wikipedia | PetaPixel
