The image you see above shows macro photos taken of colored pencils against a white backdrop. You start to notice more details with the iPhone 3GS, and furthermore with the 4s. After that it becomes harder to discern differences, but the iPhone 6s photo clearly looks the best.
Finally, let’s take a look at this low-light shot of old coins. Admittedly, it’s harder to judge the iPhone 6 and 6s here. The 6 is actually brighter, but the 6s appears to show less noise and more detail. Note that there have been reports of low-light issues with the iPhone 6s and Live Photos.
What do you think ?