Jeffrey Friedl’s Blog » Jeffrey’s Autofocus Test Chart Posted by imus on October 10, 2011 Posted in: Crafts-Hobbies, Photography, Technology, Uncategorized. Tagged: camera, photography. Jeffrey’s Autofocus Test Chart via Jeffrey Friedl’s Blog » Jeffrey’s Autofocus Test Chart. Posts navigation ← beer list: week ending 10/09 columbus day-thoughts,overcast and misty, camera arrival at lifepixel in wa, photography →