As you probably know – iPhoto is no more. It has been replaced by Photos on your Mac (as of OS 10.10.3). If you ever made adjustments to your photos in the past, it would be wise to read this.
The hidden editing power of Photos for OS X via MacworldPhotos for OS X is designed to appeal to a broad audience, with simple editing tools that let anyone improve their photographs. But is that it? Even though it’s a 1.0 product (replacing iPhoto and Aperture), a lot of editing power is actually hidden beneath that user-friendly surface.
Click the arrow (left) to expose the Light controls (right).