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How to make Foveon sensor-like images with a traditional Bayer sensor array camera

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You can achieve Foveon-like images with deep colors and crisp individual pixels with your conventional (Bayer) camera. However, this comes at the price of losing 75% of your megapixels and having to work experimentally and outside the comfort zone of your camera manufacturer’s color science.

Owners of Foveon and 3-chip video cameras swear by their camera’s color reproduction, and for good reason. Other, conventional digital camera sensors can’t see true colors, but only record monochrome red, blue, and green pixels. In other words, a 24-megapixel camera with a conventional (Bayer) sensor doesn’t really record 24 million color pixels, but 6 million monochrome red, 6 million monochrome blue and 12 million monochrome green pixels.

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This extreme Raspberry Pi camera mod uses a laser to removes the Bayer filter array

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There are a lot of reasons why one might want to have the sensor in their camera modified. We see it all the time for those who wish to shoot infrared or ultraviolet photography. There are even companies out there who will do the whole process for you. Usually, though, it doesn’t involve stripping off the Bayer filter array. Typically it’s just removing the filter that blocks UV and IR.

Well, for Les Wright at Les’ Lab, just removing the blocking filter on his Raspberry Pi camera wasn’t enough. he wanted all the raw data, without any colour interference at all from every pixel on the sensor. So, he went on a mission to figure out away to remove it without killing the sensor. Ultimately, the best method proved to be to burn it off with a laser!

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This is why your 4K camera isn’t really 4K

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We all harp on about the latest 4K this or 8K that. But do we really know what we’re saying? Most of the time, probably not. It all comes down to how the camera’s sensor actually records each of those pixels in the image, which is largely guesswork.

In this video Cooke Optics interview cinematographer Geoff Boyle. He explains that it’s basically all down to the nature of a Bayer pattern filter array. What’s really happening when your sensor sees an image and why your camera’s resolution is lying to you.

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Bye Bye Bayer; Canon’s 120MP Sensor Rumored to Be Based on Foveon-Like Technology

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The Bayer filter was patented in 1976 and can be found in almost all digital camera sensors sold today.

While several alternatives have been suggested over the years, some more exciting than others, none caught on. This could soon change, though, as Canon Watch reports that the 120MP full frame sensor Canon is developing will not be based on Bayer technology.

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