The rear camera in iPhone 5 has the same 8 megapixel resolution as the iPhone 4S, with the same specification of fast f/2.4 aperture for shooting in dim lights. Comparisons of image quality shows improved sharpness of picture in iPhone 5 compared with past iPhone models.
One of the exclusive feature of iPhone 5 camera is the ability to capture still photo while recording 1080p video. During a video recording, simply tap the camera button at the top-right corner to capture a still image. It’s simple and fast.
One disadvantage is that photos captured during video recording are in the lower resolution of 1920x1080px at a 16:9 aspect ratio. Compared this to the 8 Megapixel 3264x2448px resolution at 4:3 aspect ratio of normal still shots. Nevertheless, this ability to capture still photo while recording is great for occasions that you do not want to miss both video and great photos.
You can capture still while recording video using the front camera in iPhone 5 as well. The front FaceTime HD camera is updated to 720p in iPhone 5, compared with the VGA 0.3 Megapixel one in iPhone 4S.