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"Less Megapixels = Better Color"...

Started Oct 9, 2018 | Questions thread
tokumeino Veteran Member • Posts: 3,175
Re: The role of demosaicing ?

57even wrote: [...]

Firstly, the colour filters cover a range of wavelengths. There is quite a lot of overlap between red and green and green and blue. So it is possible to correlate a neighbouring green-red pair with another green-red pair to refine the probable red/green ratio. It's just more computationally intensive, and needs to look at a larger sample of pixels. It also requires a two-pass technique (at least) rather than 1 pass. [...]

Thanks for taking time to explain. In particular, I didn't realize the point above? By using Darktable, I never really undertood the difference between Markesteijn n-pass. I guess that this is what it is about.

I guess that LR does make use of VNG, right ? 

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