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  • Off Topic • Re: Blurb B&W photo books November 21, 2017
    I noticed few weeks ago that Blurb photo book prices have dropped. Also their shipping price to Japan has dropped. In 2015 this B&W book I made in Lightroom was $70, but now the identical book is $50. The shipping to Japan was $23, but now it is $11.About 3 weeks ago I decided that […]
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  • Give it Your Best Shot • Re: Powerboat Races November 21, 2017
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  • Give it Your Best Shot • Re: After the Storm November 21, 2017
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    classiccameras wrote:I gave up worrying about sensor size, and I put away any prejudiced I had for small sensors and got me a Lumix XZ330, Yes, small sensor but sharp pictures with good DR and very little noise. I have to agree about the Olympus, I have used a EM-10 for a couple of years […]
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  • Give it Your Best Shot • After the Storm November 20, 2017
    One cannot visit the Florida Keys without feeling the impact of Hurricane Irma. Debris is placed in front of houses,formed in piles on the side of the road, and staged for processing in centrally located areas. Just minutes from the home where I stayed is a refrigerator graveyard. It processes units that have been transported […]
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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.