iPhone to the left: iPhone 3G running iOS 4.0 (8A293, upgraded as restore, without final restore from backup)
iPhone to the right: iPhone 3G running iPhone OS 3.1.3 (7E1

[youtube]http://www.youtube.com/watch?v=dySFHyKR_58[/youtube]
<a href="http://dailyiphoneblog.com/2010/06/23/ios-4-performance-on-iphone-3g-camera-and-settings/">

[Read the original blog post]
</a>