I used the 20mm/1.7 because it's the brightest lens I have. However it does seem to hunt a bit for focus sometimes (unnecessarily?). I also have the 14mm/2.5 . Would it be better with quicker focus? Would it be worth it giving up some light for? I do prefer the longer reach of the 20mm. Would it be better to use manual focus to prevent the lens from focusing back and forth during the video? Thanks. Examples :smile: : <iframe width="560" height="315" src="https://www.youtube.com/embed/H-wh9wtI8rY?rel=0" frameborder="0" allowfullscreen></iframe> <iframe width="560" height="315" src="https://www.youtube.com/embed/MsTXALkvXLg?rel=0" frameborder="0" allowfullscreen></iframe> btw, is it just me or does the guy in the first video look like Alec Baldwin in a wig?