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Sony produced a camera with a 4 primary color sensor, the DSC-F828 - instead of 2 green pixels in each 2x2 square, there was one green and one Emerald (cyan).
by mark-r 11y ago
Sony produced a camera with a 4 primary color sensor, the DSC-F828 - instead of 2 green pixels in each 2x2 square, there was one green and one Emerald (cyan).
I had the predecessor to this camera, the F717, and it was a wonderful and innovative camera in most respects, but its Achilles heel was the color rendition. My personal belief is that the 4-color sensor was an attempt to improve on this, but the root cause was Sony's inability to apply proper color science in their rendering engine and the 4-color sensor was just a gimmick. The camera was introduced at an inopportune time, as the DSLR had just hit a similar price point providing better high ISO performance and interchangeable lenses, causing it to fail in the marketplace. The experiment was never repeated.
I don't know if the actual frequency response of the RGBE sensor was ever published. It would be interesting to see it overlaid on the CIE diagram.
- TheRealPomax 11y agoI remember that camera, although I never got to play with it myself. A bit of searching on the web doesn't seem to turn up any useful response graphs or gamut plots, which is a shame =(
- pedrocr 11y agoThe specs seem to list a standard RGBG sensor: http://www.dpreview.com/reviews/sonydscf717/2 http://www.dpreview.com/reviews/sonydscf717/2 It also doesn't produce a raw file so mapping the gamut of the actual sensor is much harder.
- mark-r 11y agoThe RGBE camera was the F828, the one before it to which I was contrasting was the F717 and indeed it was RGBG. Although the F717 didn't have RAW, I believe the F828 did.
- pedrocr 11y agodpreview aggrees: http://www.dpreview.com/reviews/sonydscf828/2 http://www.dpreview.com/reviews/sonydscf828/2 I'd be very curious to see a raw file from this camera if anyone has one.