Promaster Extension Tube Set for Canon EF format_16mm that's a solid 40 years

that's a solid 40 years of lenses to choose from

though a few have light oil which does not affect function

you will need at least one more Pocketwizard device to trigger a camera or flash as described above

Includes a matching Airhed 1 ball head and a semi-soft carrying case

Promaster Extension Tube Set for Canon EF format_16mm that's a solid 40 yearsA set of three extension tubes for Canon EF mount: 12mm, 20mm, and 36mm. These tubes have the electronic contacts necessary to maintain autofocus and autoexposure capabilities. If you're curious about dabbling in macro work, this is an inexpensive way to get started. Includes front and rear caps.