The Canon T3 features a digital SLR design, so the optical viewfinder offers a true, through-the-lens (TTL) display. A dioptric adjustment dial accommodates eyeglass wearers, letting them adjust ...

The Canon EOS-1D Mark IV's viewfinder hasn't changed from the 1D Mark III. According to the company, the Canon 1D Mark IV's pentaprism viewfinder has a coverage of approximately 100% (which agrees ...