Drupal 7 image crop modules
Clients expect to have crop capabilities available when they upload images. And there are several options for Drupal: Imagefield crop may be the most popular, but it certainly isn't the best (imho). After testing, I found manual crop to have a much better approach. But there are others (comparison) and some have really cool experimental features, like auto-focus and cropping images on the most important parts (face detection, awesome!).