The iPhone 4’s rear camera uses a back-illumined sensor which is designed to increase light capture, thus augmenting low-light performance. The camera was upgrade from the iPhone 3GS’s 3.2 MP to a 5 MP camera, and the camera is very capable in well lit settings. One of the biggest improvements is the ability to capture HD video (720p) at up to 30 FPS, which it does quite well, turning the iPhone 4 into a great always-with-you camera and camcorder. The camera captures in HD by default (1280×720) with no settings allowing for a change in quality or aspect ratio.
The single white LED flash is decently bright and situated to the right of the rear camera. The flash uses a Fresnel style lens to focus the light of the flash. The flash can be toggled On/Off/Auto right inside the Camera app. The flash tends to be much more useful as a flashlight than a picture-taking tool, and I doubt I’ll ever actually want it to be turned on unless there is something that I desperately want to take a picture of, but it’s too dark to do so. In semi-low-light shots, I’d rather just capture the native shot and bump to brightness up later with post-processing.
Here are a few unmodified shots taken with the iPhone 4’s camera, be sure to click for full size (excuse the cat theme, I have six!): And here are two HD videos taken with the iPhone 4 (make sure you are watching in 720p):
If you are still interested in the iPhone 4’s camera, have a look at some additional coverage below: