Pros
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Minimal shutter lag<br />Large, sharp LCD screen<br />Touch Focus<br />Additional features with Camera+ App<br />Excellent image quality
Cons
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Placement of the lens takes some getting used to<br />No manual control of ISO and White Balance<br />A larger, dedicated shutter button would be nice.
Image Samples from the iPhone 4S


Above: Images are sharp and detailed, with natural colours.

Above: Exposures are generally accurate

Even strong backlighting didn’t phase the 4S in this example

Above: Punchy, saturated colours

Above: A low light church interior at ISO 800 shows noise but it isn’t excessive.

Above: Barrel distortion on the iPhone 4S is minimal – better than some compacts.