Kenko DG Extension Tube Set for Nikon F collectible and the push-pull design makes

and the push-pull design makes it easy to zoom and focus at the same time

The Vivitar AT-3 extension tube set will mount to any Nikon F mount lenses

lens is in excellent cosmetic condition

The SMC Pentax-FA SMC 28-90mm f3

Some screens will need exposure compensation with a Photomic prism

Kenko DG Extension Tube Set for Nikon F collectible and the push-pull design makesA set of three extension tubes for Nikon F 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.