An example of the the A7 bringing out the potential of a decades-old lens:
Konica Hexanon 28mm f/3.5, ISO 50, 4s at f/16
Some of the story here: http://fourbillionyears.org/why-the-sony-a7-is-now-my-flagship-camera/
And here: http://www.fourbillionyears.com/