Quad Bayer sensors: what they are and what they are not

09 June 2019
Marketing departments are trying to sell you on the wrong thing - resolution isn't why these sensors are good, it's the better image processing.

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A nice idea with an article like this.

But the real thing on the resolution is kept mentioned in a few lines towards the end, the Airy disc....

For red light (700nm) we get (see e.g. https://eskerahn.dk/wordpress/?p=12 )

F < d / 854nm

Sure this is for the eye, and can be weakened a bit for electronics

But we would still need something around F1.0 to have a sensor with 800nm grid distance to make sense for resolution, and THAT is not easy...

(Note that it is the grid size that matters here, not the size of the sensor, though this luckily is almost identical in modern sensor, with the electronics on the other side)

Nick Tagataka, 09 Jun 2019One advantage of having a quad bayer filter is that you can... moreI've already mentioned single shot HDR, along with its major demerit:- its using light from only 2 subpixels (out of 4 sub pixels) for each picture of the HDR, so the large sensor advantage is dead.

Multishot stacking happens on almost any conventional camera, without or with HDR... that depends more on processing & specs power!

I don't see the big point why you'd design the entire sensor around it.

Anonymous, 09 Jun 2019Is there any difference between 1/2" 12mp sensor and 1/2mp ... moreNo. The 48MP has to be a larger sensor to be beat the 12MP sensor while shooting at 12MP

  • Moj

[deleted post]I bet you have a crapple! aren't you?
It was and kinda is still way better than any phone today in camera part!
Personally would trade any phone for it if it has a wide app renege!

  • i dont care

Anonymous, 09 Jun 2019It's used in huawei p20 pro and mate 20 proi am programmer and i dont care what you phone is. i can create my own camera app that 12mp can capture 48mp and up quality.
note: It's only on the mind that making things amazing from an ordinary smartphone user like you. "Imagining things"

Anonymous, 09 Jun 2019Cameras should capture the scene as close as it is . If ba... moreWhen you look at the high contrast scene with your own eyes, do you see any blown out highlights or crushed shadows? No, because the dynamic range of human eyes are insanely high compared to any digital cameras. If "cameras should capture the scene as close as it is", then it SHOULDN'T have any overexposure in the frame, probably apart from direct sunlight. And if you actually hate auto HDR on a phone so much, you can just go to manual mode to disable any additional post processing or turn off HDR from the viewfinder/camera settings.

"why showing dark gray clouds when they are not"
That's mainly due to some phones boosting clarity and applying strong dehaze filter resulting in overly darkened midtones.

"Few devices even seem to remove clouds to show more blue of the sky"
Like which phone specifically? You know phone manufacturers are not groups of magicians, right?

  • Anonymous

Anonymous, 09 Jun 2019Do you know that j8 body is plastic?So is poco. It is not metal.

  • Anonymous

"We won’t get into the details, but such high resolution cameras are often diffraction limited"
Diffraction isn't really the main issue here. Basically every 48 megapixel phone has an aperture diameter that is at least as large as the aperture diameter of the iPhone Xs tele camera (2.5mm). This means that diffraction allows for the same amount of details as the iPhone Xs tele camera, but currently there is no 40 or 48 megapixel phone that captures as many details as the iPhone Xs tele camera.

  • Anonymous

Anonymous, 09 Jun 2019Is there any difference between 1/2" 12mp sensor and 1/2mp ... moreNo, it should be about the same. The article is wrong. By the way, Sony never confirmed the mentioned HDR method for the Imx 586, it's just speculation from gsmarena.

  • Anonymous

Anonymous, 09 Jun 2019Is there any difference between 1/2" 12mp sensor and 1/2mp ... moreNo

  • Anonymous

Is there any difference between 1/2" 12mp sensor and 1/2mp 48mp Quad bayer sensor while shooting in 12mp?

  • Anonymous

Walter C. Dornez, 09 Jun 2019Hey real quick, does anybody remember that Sony sensor that... moreIt's used in huawei p20 pro and mate 20 pro

  • Anonymous

Nick Tagataka, 09 Jun 2019What's the big deal about "applying fake DR" (I get what yo... moreCameras should capture the scene as close as it is .
If background is overexposed, why tricks to pretend it is not?
If cloudy sky is almost white and light gray, why showing dark gray clouds when they are not?

Few devices even seem to remove clouds to show more blue of the sky.

  • Anonymous

Anonymous, 09 Jun 2019The least important thing to me is cpu. I'd rather have Fl... moreDo you know that j8 body is plastic?

  • Anonymous

Walter C. Dornez, 09 Jun 2019Hey real quick, does anybody remember that Sony sensor that... moreImx600 was made as exclusive for Huawei.

Any company can go to Sony and ask for the sensor with the specs they want.
Most buy 12MP because they are cheaper.
Also less resilution = less noise at 100% crop.

48MP (non-quad bayer) 1/2" would have benefits over 12MP 1/2", but 48MP QB 1/2" would not over a 12MP 1/2".

I prefer downsampling than binning ...

Hey real quick, does anybody remember that Sony sensor that they announced that was called the IMX 600 or something? I know a lot of people wanted that sensor since it sounded like a true upgrade

  • Anonymous

Its the same thing as RGBG amoled panels vs standard RGB panels (LCD).

A 450ppi amoled display will only produce details at 450ppi in Green colour, while only producing 225ppi of Red colour and 225ppi of Blue colour. And this brings the total output of the resolution to 300ppi. (450+225+225)/3=300

So just as a 450ppi amoled screen is inferior to a 326ppi LCD, same thing goes with quad bayer vs normal bayer.

Bigger numbers = lower results

  • Anonymous

This is why no sensor beats the Nokia 808's 41MP huge 1/1.2" sensor still.. Nokia got it right the first time.. The only thing the 808 lack is auto HDR.. The HDR has to be done manually but the result beats any smartphone of today in terms of detail

  • crusedor wane

R, 09 Jun 2019Are quad Bayer sensors physically thinner or easier to yiel... moredude costs 10s of billions, canarrow made it clear...does your father have that kind of money?

Anonymous, 09 Jun 2019You mean phones can apply fake DR ... Because they show s... moreWhat's the big deal about "applying fake DR" (I get what you're trying to say but if I take what you said literally it won't make sense) though, HDR processing is what every smartphones do and there's no point of not having better algorithms for it if it is available.