The situation isn't the same because anyone buying a DSLR with swappable lenses should understand that they're buying the body and not the lenses. It's fair gam

The situation isn't the same because anyone buying a DSLR with swappable lenses should understand that they're buying the body and not the lenses. It's fair game to use the best possible lens in that situation because then the camera body capabilities are the limiting factor in the test. When you buy an iPhone for photography and video, you're buying the sensor, lenses, shutter, focusing system, and onboard image processing in a single package. Changing that package by using an aerial image from a different lens is a material change in the system because whole chunks of the iPhone image system are no longer doing the work.