Topic: Manual Focus Lenses
I recently did a comparison between a manual focus and an auto focus lens for animation, specifically in the realm of light flicker. I put my results in a video, along with some information about the difference between the two, and the possible advantages of manual focus lenses. Here it is:https://www.youtube.com/watch?v=QMcfTzvq9do . Feel free to ask any questions and discuss. 
