Canon 50mm 1.4 vs 1.8 autofocus comparison (speed and sound)
The audio for the 1.4 is the left channel and the audio for the 1.8 is the right channel.
Autofocus speed and sound comparison of the Canon 50mm 1.4 and 1.8.
Very quick test done with the lenses on a Canon T3i / 600d.
The video was shot using an iphone 5.