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  • Give it Your Best Shot • Re: A99-2 September 20, 2018
    david antony wrote:Very nice shots Valery.I did not know our smoke had reached Manitoba that bad.Alberta was in the news re heavy smoke.Thank you! Oh yes, the smoke was terrible thing at very hot days. I glad it's in the past.Statistics: Posted by ValeryD — Thu Sep 20, 2018 1:57 pm
    ValeryD
  • Give it Your Best Shot • Re: A99-2 September 20, 2018
    Very nice shots Valery.I did not know our smoke had reached Manitoba that bad.Alberta was in the news re heavy smoke.Statistics: Posted by david antony — Thu Sep 20, 2018 7:37 am
    david antony
  • Digital Workflow and PP • Re: Why it's time to move away from Lightroom September 20, 2018
    I found that darktable is very powerful and flexible, but I am still using LR Classic CC. I still prefer LR by far. With darktable there are just so many ways to do similar things, lots of controls, and many options. But, it takes a lot of dedication to learn it well.You can see how […]
    bakubo
  • Digital Workflow and PP • Re: Why it's time to move away from Lightroom September 20, 2018
    artHarris wrote:I rarely contribute to discussions, being a keen and serious amateur who feels that he has little to contribute and a lot to learn. HoweverI find this discussion extremely shallow.I used to use Lightroom, but DxO is where all me shots go before I even look at them; its automatic treatment gets the best […]
    Vidgamer
  • Alpha A-mount System • Re: KM5D sensor failure? September 19, 2018
    I'm not complaining there is a problem (used both bodies a lot got my money's worth out of them and then some), I was just curious as to what the issue is. There is an interesting development I have noticed...that is if I take a second shot straight away afterwards it's fine, I also tried […]
    bfitzgerald

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Sony CMOS sensor background revealed

There is a white paper by Sony Semiconductor on the imaging processing which I think is in the HX1, //www.sony.net/Products/SC-HP/cx_news/vol55/pdf/featuring55.pdf. I assume it is the IMX-032 CMOS sensor (//www.sony.net/Products/SC-HP/cx_news/vol55/np_imx032cqr.html) mated to a CXD4109AGG image processing chip. There seem to be some interesting techniques employed, multi-plane synthesis to combine several frames for low light and HDR capture.

With the IMX-032, it is interesting to note that the on-board programmable gain amplifier has a gain value of up to 18dB or a factor of 8, so if base ISO is 80, then maximum “analogue” ISO is 640. If we compare the IMX-032 versus Sony’s first column ADC CMOS chip (IMX-017), the IMX-32 has an 11.8% better photo-electron efficiency per unit area (2300e per 1.75 micron square pixel compared to 4500e per 2.5 micron square pixel). Might be a sign that Sony is improving the process and design used to make their CMOS chips.

The backside illuminated chip is called the IMX-061, //www.chipworks.com/uploadedFiles/Aliased_Pages/CMOS_ImageSensors_Spotlight/Chipworks%20-%20Sony%20IMX061%20EXR-0902-813.pdf
6MP and 1.75 micron pixels in ClearVID (45 degree) layout with a 1:6:1 RGB Bayer filter array, sacrificing colour resolution for spatial resolution.

The Nikon D90 chip is called the IMX-038 (not the IMX-021 as for the A700), so this suggests it has significant revisions compared to the IMX-021 (possibly linked to LiveView and HD Video?).

– Dr Daniel K. L. Oi

1 comment to Sony CMOS sensor background revealed

  • LEdgars

    CXD4109AGG seems very interesting sensor while more suitable for video. I would by (for reasonable price) a video camera with 6 Mpix (2000×3000) resolution and 30 (60)fps. It could provide a lot of space for cropping and digital stabilization in PC video editing soft. Of course 500GB CF 666x card then would be very useful.
    While with existing processors I don’t believe in image sticking concept. To make a panorama from three 12Mpix images in my computer (Dual Core, 2Gb RAM) takes ~30s or even more. The same for HDR images. I couldn’t imagine how it could be done in photo camera for less than second, but anyway it’s really interesting concept.