How Much Faster is the iPhone X’s ‘Telephoto’ Lens Than the iPhone 7 Plus’s?

Dan Provost:

I also used the manual camera app Halide to get an ISO and shutter speed reading at the various light levels, and came to the conclusion that the iPhone X requires roughly 2 fewer stops of light before switching to the telephoto lens, as compared to the iPhone 7 Plus. This is obviously great news, and speaks to how improved the second lens is after just one year. In my own use of the phone for the past couple weeks, it does indeed seem to be the case that I am very rarely presented with a 2X cropped image.

Impressive.

★ Thursday, 23 November 2017