Here’s a great example of the problems with having only a few red pixels from an outing a few years ago, comparing a Canon 5D Mark II with 4×5 Velvia. Obviously the 4×5 Velvia has more resolution but we downsampled it to match the 5D Mark II and got the following result (show at 200%)

On the right (the 4×5 image downscaled) we can see all of the berries on the tree but on the left (the Canon 5D Mark II image) a lot of the berries have disappeared. The only berries shown are where there were larger groups of them (i.e. a single pixel size berry is unlikely to match up with a single red pixel whereas a group of berries covering 2×2 sensor pixels will definitely hit a red filtered one).

https://petapixel.com/2014/12/18/comparing-image-quality-film-digital/ #film-photography #photography

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