The original Samsung Galaxy Fold has decent camera hardware but a fairly modest number of megapixels in its snappers. For the Samsung Galaxy Fold 2, though, it looks like the number of megapixels could be substantially increased.
According to Ross Young (a display industry analyst) the Samsung Galaxy Fold 2 will have a triple-lens camera with 12MP, 16MP and 64MP sensors. That’s up from 12MP, 12MP and 16MP on the original Samsung Galaxy Fold.
He doesn’t specify what each sensor’s role is, but it’s likely that along with a main sensor there’s a telephoto one and an ultra-wide one, just like on the original Galaxy Fold. And we can further guess that the arrangement will be similar to the Samsung Galaxy S20, which has a 64MP telephoto sensor, allowing for 3x lossless and 30x digital zoom.
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https://www.techradar.com/news/samsung-galaxy-fold-2-could-pack-the-galaxy-s20s-best-camera-feature