IN THE SPARE room at Jennifer Anderson's Lovettsville, Va., house, you'll find an old baby carriage, a chalkboard easel for her two-year-old daughter and a wall displaying 40 photos, from squinting newborns to laughing toddlers. After her kids were born, the mother of three started snapping pictures of them with an old film-based point-and-shoot camera. But she compared those cameras to a DSLR camera, and changed her priorities. Now, thanks to some high-tech upgrades — namely, an $1,800 digital single-lens-reflex (DSLR) camera and an iMac loaded with the latest photo-editing software — she's turned this room into the epicenter of a burgeoning photography business. As it turns out, most of those smiling sprouts on the wall aren't her kids — they're images of children she's shot for clients. More on DSLR from Smartmoney.