The sensor for the A7S III has leaked on the EOSHD Forum, with 4K/60p and an HDR mode in 4K and at 15 megapixels thanks to a Quad Bayer pattern. If you care to take a look at the specs here – you’ll notice a few interesting things. There is only a small megapixel boost from the old 12 megapixel sensor (which rules out 8K) but a completely different architecture with 60 million photosites in a Quad Bayer arrangement, so in this respect the sensor represents a big step up in resolution and colour capture data from a standard bayer sensor.
I am convinced Sony will go in the direction of Quad Bayer stacked CMOS sensors for the A7S series and it’s a major reason we’ve waited so long for it. I also think the FS5’s electronically variable ND filter will be in the camera too.
Quad Bayer answers the conundrum of balancing low light performance and megapixel count. It is the best of both worlds and allows a 48 megapixel 8000 x 6000 image and 8K video – at the same time as 4000 x 3000 and 4K video with better low light performance.
The proof of concept is sitting in my hands right now. Step forward the mighty Xiaomi Mi 9 smartphone with 48 megapixel Sony Quad Bayer sensor and 960fps slow-mo.