Digital SLRs are all autofocus cameras, most of which have evolved from the autofocusing 35mm film cameras of their respective manufacturers. They use the same lens mounts, and often, the same lenses as their film-based predecessors. However, the history of the development of autofocus film cameras shows that only two http://assistenciadecameradigita89022.blog5.net/33532924/new-passo-a-passo-mapa-para-assistencia-de-camera-digital