That's true, but Risman is clearly very liberal with photoshopping ("moon-stitching" liberal), and it seems to me that that's the largest factor. The turquoise

That's true, but Risman is clearly very liberal with photoshopping ("moon-stitching" liberal), and it seems to me that that's the largest factor. The turquoise tone in the waves has been overlayed (it's fake, in other words), and I bet other areas of the photo has been very heavily modified in an artificial way. I would be curious though to read a professional analysis, since this is a very interesting (and I think rare) case of how a photo looks before and after fabric... I mean, after "art has been applied". /s (Also, I wonder if Risman used a polarizing filter, while Gendron didn't, as it generally contributes to this type of difference (deeper blue tones, and increased resolution due to dehazing)).