Sony reveals new ‘stacked’ 21MP Micro Four Thirds sensor

Sony Semiconductors sensor range
Sony's new high-speed MFT sensor appears at the top of its MFT sensor list, lower left. (Image credit: Sony Semiconductors)

Everyone knows that Sony doesn’t make Micro Four Thirds cameras, but it’s perhaps less widely known that the Japanese giant DOES make MFT sensors. It’s also a specialist in stacked sensor design and high-speed data readouts.

The new IMX472-AAJK MFT sensor is currently marked as ‘Tentative’ on Sony Semiconductors’ own product flyer, so there’s no indication as to when it might appear in cameras or, indeed, which cameras they might be. 

Camera makers are notoriously tight-lipped about their sensor suppliers and Sony sensors are used in many different applications in commercial and industrial settings, not just consumer cameras – though Sony’s data sheet does say specifically that this is designed for ‘consumer use digital still cameras’.

Sony IMX472-AAJK MFT sensor key features

The new sensor has 21.46 effective megapixels, which is a barely significant increase over the 21.27MP effective megapixels of Sony’s existing IMX272AQK MFT sensor – but both have the same ‘active’ pixel count of 5,280 x 3,956 pixels, so the image dimensions will be the same.

The key difference is in the speed: the new IMX472-AAJK can read out the 20.89 ‘active’ pixels at 120fps in still photography mode, which is twice the speed of the existing sensor (60fps).

We know that the Panasonic Lumix GH6 is coming later this year, but will it use the new high-speed Sony sensor? (Image credit: Panasonic)

Are new super-fast cameras coming?

We do know that the news Panasonic Lumix GH6 is scheduled for release later this year and the high-speed processing of the new MX472-AAJK sounds like the ideal candidate for that camera – but this sensor’s 5.3K horizontal resolution doesn’t tie in with Panasonic’s planned 5.7K video capture, so we will have to wait and see. (The 5,280 pixel horizontal resolution is quoted for a 4:3 still image aspect ratio, whereas 4K UHD is wider and less tall with a 16:9 ratio.)

Just because a sensor maker designs a new sensor, it doesn’t mean camera makers will necessarily buy into it – but at least we know have an idea what the next developments in Micro Four Thirds cameras might be!

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Rod Lawton

Rod is an independent photography journalist and editor, and a long-standing Digital Camera World contributor, having previously worked as DCW's Group Reviews editor. Before that he has been technique editor on N-Photo, Head of Testing for the photography division and Camera Channel editor on TechRadar, as well as contributing to many other publications. He has been writing about photography technique, photo editing and digital cameras since they first appeared, and before that began his career writing about film photography. He has used and reviewed practically every interchangeable lens camera launched in the past 20 years, from entry-level DSLRs to medium format cameras, together with lenses, tripods, gimbals, light meters, camera bags and more. Rod has his own camera gear blog at but also writes about photo-editing applications and techniques at