As with many Canon lenses, full-time manual focusing is available by switching the button on the side of the lens to . ... Canona#39;s venerable EF 50mm f/1.4 USM and EF 100mm f/2.8L Macro IS USM lenses are only two of a full lineup of Canon anbsp;...
|Title||:||Canon EOS 5D Mark III Digital Field Guide|
|Author||:||Charlotte K. Lowrie|
|Publisher||:||John Wiley & Sons - 2012-06-20|