An excellent example of a Canon Extender 2x-B. Doubles the effective focal length of a telephoto lens (at a loss of 2 stops of aperture). This one was used almost exclusively with a Canon 70-210 f4, extending it to a 420mm f8. I believe these were a 7 element design, ensuring sharpness to the edges. This one is in great shape, only the JCII sticker is peeling off to betray its age. With original Canon caps, front & back.
I'm happy to answer any questions, and combine listings to save shipping $$$.
Thanks for looking!
Stan
We can offer expedited shipping. Please contact us before purchasing. Thank you!