Used Mamiya RZ67 45mm extender

The extender clicks on with reassuring precision and doesn't introduce any noticeable loss in sharpness that I can see. It's exactly what I needed for wildlife shots without carrying a second long lens.

I was a bit worried about used optics, but this extender mounts solidly and the image quality is still sharp right to the edges. It’s a simple way to get more reach without hauling a second lens.

The extra reach this gives my RZ67 lenses is exactly what I needed for tighter portraits, and the optics stay impressively sharp even wide open. It locks on solidly with no play, and the used condition was way better than I expected for the price.