It really isn’t either. Digital zoom is enlarging a set of pixels. The iPhone is using different parts of the same sensor. If you imagine a sensor with an infinite number of pixels, then it is more that. The 48 megapixel sensor is probably close to infinite, as other parts in the optical chain likely keep it from fully resolving those pixels.No, sorry, it’s not optical. Optical zoom is achieved when lenses are arranged in a way that they get different focal length all with the same lens…
iPhone 15PM can’t do that, the zoom that is achieved is digital …
And… digital zoom is going to be getting very good. I was disappointed that Apple didn’t advance here. If you look at some of the recent whitepapers on using AI for digital zoom, the results are just mind blowing.