Ask Bill & Dan

Maarten in Amsterdam is looking to get more depth of field out of his Canon 6D, but his lens only stops down to f/22. Will lenses with even smaller apertures help? Where might he find some?And Reena wants to use her existing lenses to photo scan negatives and heard extension tubes might be the answer. Bill & Dan explore the options with her.Canon Lens Spec ChartNikon Lens Spec ChartCanon 70-300mm IS Zoom Lens on AmazonKenko Extension Tubes for Nikon MountFotodiox Bellows for Nikon MountKEH Used Gear Online Store