Sam just got an iMac and wants to know what's the best software for editing photos. Leo says the best bet is to subscribe to Adobe Creative Cloud for Photographers. For $10 a month, he'll get full versions of Adobe Lightroom and Photoshop. It's a great deal. Lightroom is the standard. Sam should also check out Apple Photos. It's a great way to start out. Leo also recommends Skylum (formerly MacFun) Luminar, which is $59.