Was going through some teaching files. Not really a fair comparison, but had two images taken of a ventilator on a critically ill patient. One shot with an iPhone4, one taken when I elected to bring in a "good" camera to capture the ventilator tracings for teaching purposes (a Leica M9). Shot a year apart though in the same room under the similar lighting. Both hand-held. Again, not a totally fair comparison for several reasons (the Leica image allowed me some freedom in tweaking that the iPhone image didn't), but this comparison can serve as an example of how gear can actually matter in an image (as much as it pains me to say this). I would not be comfortable using the iPhone image in a presentation, I would be comfortable using the Leica image (and in fact I am using it for teaching at Brown).
iPhone4
Leica M9, 35mm f/2 lens

iPhone4

Leica M9, 35mm f/2 lens
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