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  • Alpha A-mount System • Re: So I got a Pixel phone, yes the camera makers are in trouble October 31, 2020
    bfitzgerald wrote:..............Yes the early batches of the 16-80mm were plastic mechanism, also an issue on the 16-105mm from what I hear, they updated them to metal I believe. So if you use them hang onto them. I do wonder if I should sell more stuff off, then I think what would I do with the […]
    ValeryD
  • Alpha A-mount System • Re: So I got a Pixel phone, yes the camera makers are in trouble October 31, 2020
    The torches top one is with the DOF effect in portrait, the second is the one without (it is close ish so show some background blur though not as much) It seems to always say a normal shot too for portrait, I assume in case it messes things up or you want a non blur […]
    bfitzgerald
  • Give it Your Best Shot • Re: Minolta (Sony) 500F8 Reflex October 31, 2020
    smulnik wrote:Thanks everyone. Even though this lens was designed to be a compact/lightweight telephoto, I often challenge myself to find ways to use its odd bokeh to create something artsy. SigThere were purple lights in the bushes behind this skeleton. The len's bokeh makes them look a bit like spooky eyeballs. A99, Sony 500mm Reflex, […]
    ValeryD
  • Give it Your Best Shot • Re: Minolta (Sony) 500F8 Reflex October 31, 2020
    Sig,Very cool set. Love it.SuryStatistics: Posted by sury — Sat Oct 31, 2020 4:31 am
    sury
  • Give it Your Best Shot • Re: Minolta (Sony) 500F8 Reflex October 31, 2020
    Thanks everyone. Even though this lens was designed to be a compact/lightweight telephoto, I often challenge myself to find ways to use its odd bokeh to create something artsy. SigThere were purple lights in the bushes behind this skeleton. The len's bokeh makes them look a bit like spooky eyeballs. A99, Sony 500mm Reflex, F8, […]
    smulnik

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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.