Promaster Spectrum 7 Extension Tube Set for Canon EF lens mount_Pentax 645 Standard 3/8" thread in the

Standard 3/8" thread in the base for tripod attachment

some scuffs on the plate lock lever

Suited to mirrorless cameras or small DSLRs

so low light is still going to be a challenge (max ISO is 1600

Promaster Spectrum 7 Extension Tube Set for Canon EF lens mount_Pentax 645 Standard 3/8" thread in theA 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. Good working order, light cosmetic wear. Compatible with EF and EF S lenses.