Canon has been going a bit mad on the Single-Photon Avalanche Diode (SPAD) sensor development, it seems. Having just announced their groundbreaking 1-megapixel SPAD sensor a little over six months ago, Canon’s back with a new 3.2-megapixel SPAD sensor, which is not only the most densely pixel-populated sensor of its kind, but it’s also more light sensitive.

According to a report there are plans for Canon’s Kawaski plant to begin mass-producing the new sensor in 2022, but don’t get too excited just yet. This sensor won’t be going into mirrorless cameras – at least, not for a while. Initially, Canon plans to put it inside its own Canon-branded security cameras and even that won’t happen until late in 2022.

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Canon has developed what was everybody thought to be impossible. And while it might not be the highest resolution camera sensor out there, Canon’s new 1-megapixel Single Photon Avalanche Detection (SPAD) sensor offers some huge benefits over more traditional CMOS or CCD sensors. The biggest being that it all but eliminates noise from your images.

It differs from CMOS sensors in the way that it captures light. Whereas CMOS sensors use electrical signals to monitor the volume of light hitting each pixel in an analogue fashion, which introduces noise, before being converted to digital, SPAD sensors count each and every individual photon that hits it and puts out a true digital signal.

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