While programs like Picasa and iPhoto can meet the image organizing needs of many digital photographers, professional and prosumer shooters demand more muscle from their wares. Over the years, they’ve sought that muscle from applications like Photo Mechanic. The robust image organizer, published by Camera Bits, recently celebrated two milestones. It reached the 35,000 licenses-sold mark, and it released a new cut of the program, version 4.6.1. This latest rendering of the software, which works on both Macs and PCs, has some elegant and useful new features