http://www.sony.net/Products/SC-HP/new_ ... 219_e.html
Does not say RGBW in briefLens Shading Correction Function
The IMX219PQ has a lens shading correction function with four independent colors. It can be used for not only normal lens shading correction, and also can serve as an individual module adjustment of deviation in the lens assembly process during the module fabrication.
Calibration data is written in a built-in OTP during the module inspection to contribute to the short loading time when the camera is turned on.
One from three tables can be selected according to color temperature and there exists two-table blending mode for interpolation.
http://www.sony.net/Products/SC-HP/IS/s ... 140910.pdf
IMX219 is an upgrade to the IMX111, mainly 4 lane MIPI for faster video.
RGBW get a mention here
http://www.xperiablog.net/2012/01/23/so ... artphones/
List of Exmor chips, IMX111 - RGB, IMX219 ? Wiki is100% accurate?
More mentionof RGBW
http://www.engadget.com/2012/08/20/sony ... hdr-video/
Seems like RGBW is common in chips with 1.1? pixel pitch, to keep sensitivity similar to the older 1.4um sensors.
Now it gets interesting, RGBW is gone?
http://pocketnow.com/2012/09/22/sony-rg ... rts-to-rgb
It's back now?
http://image-sensors-world.blogspot.com ... flyer.html
Was or is there two models of the IMX219? RGBW and RGB
Sony has 40% of the market, have they finally got the RGBW issues sorted and have forgotten to update the data sheets?
http://www.imaging-resource.com/news/20 ... -13mp-rgbw
Dye based micro lens RGB filters are added after the silicon is made. Easy to change to RGBW from RGGB.
I will bet the time taken to get RGBW working was sorting out bugs in the colour correction matrix etc software. Bayer has been around for ages, same old code used over and over, guy who wrote it has probably retired.
I also have a suspicion the IR filter might not be 100% blocking, improving low light sensitivity.
RGBW would allow for this as the RGB filters block quite bit of IR but not all.
No filter on the White pixel makes it more sensitive to IR, subtract it from the RGB.
Would be interesting to get the V2 Noir and cover the lens with a IR filter from the V1.
Then compare colours to normal v2.
Sony going to give you the algorithm?
Taken them 3-4years to figure out, how many man years? $$$$$$$ er yen,yen, yen...
Adafruit offered bounty on MS Kinect.
RPI offer one to figure out the code?
Sony going to hire the school kid that figures this out to replace the retired guy?
Cyper chip? or just secret algorithm?
Will be interesting to see what the raw data shows.
Grab raw data, run some python over it, RGB or RGBW.
They might even have done some tricky stuff, RWBG:)
My night shots with yellow floodlights are red coloured, indicating missing green.
White light colour balancing won't pick this up, but will they look washed out?
Is the focus issue a side effect of very strong noise filters?
When the modules are made and focused, not going to be using RPi's for testing.
Noise filters not needed/used in the factory?