Photo Taco – Autofocus Modes March 26, 2015 / Photo Taco Podcast / By Jeff Harmon http://phototacopodcast.com/category/phototaco/feed/feeds.soundcloud.com/stream/195247358-phototaco-contrast-vs-phase-detect-autofocus-modes.mp3Podcast: EmbedSubscribe: RSS Jim Harmer takes you through the difference between contrast and phase-detection autofocus modes and why using one may be the reason some of your shots are not tack sharp.