The iPhone 5 has a camera on-par with the iPhone 4S. Taken side-by-side, it’s hard to see a difference, unless you are in a low-light situation. Digital Photography Review did a bit of hands-on testing with the iPhone 5 camera here’s what they found.
Here’s some of what they had to say:
At first glance there doesn’t seem to be much appreciable difference between the 4s and the 5 except for a slight variation in sharpness and contrast. Both however, are significantly more detailed due to a 60% increase in pixel count over the iPhone 4.
In good light each of the cameras has, as we’d expect, chosen its lowest ISO (50 for the 5 and 4s, 80 for the 4). All three iPhones have metered this scene well and saturation is fairly natural and pleasing. The iPhone 4 is noticeably more saturated than the other two and the higher contrast makes images look more ‘punchy’ alongside the same shots from the iPhone 5 and 4S.
There is plenty more, but you should take a look at their full review and explanations of the differences between the cameras: DPReview