Interchangeable-lens cameras come in two types: DSLRs with optical viewfinders, and mirrorless models with electronic viewing
ALMOST all serious photographers prefer to use cameras with interchangeable lenses, as this gives the greatest degree of creative flexibility. At one time, this meant digital single-lens reflex (DSLR) cameras, but these have now been joined by mirrorless compact system cameras (CSCs) that use electronic viewfinders. Previously, these lagged behind DSLRs in some respects such as autofocus. But the latest models have narrowed the gap considerably, and are true alternatives to DSLRs, offering the same image quality and creative options. Camera manufacturers offer a range of models, from simple, relatively inexpensive beginner-friendly designs through to sophisticated professional models. In the middle of the range you’ll find enthusiast cameras with more advanced control layouts.