Used Nikon TC-14A MF Teleconverter

The 100-day warranty gave me peace of mind buying used, and the glass is impressively clean with no scratches at all. It mounts smoothly on my lens and sharpens up my reach without any noticeable image degradation.

The metal barrel and glass are in flawless condition, and the 1.4x magnification works perfectly with my older manual-focus lens. I’m honestly surprised a used piece this clean came with a 100-day warranty.

I was worried about buying used optics, but this converter looks practically new and mounted perfectly on my 300mm f4. The focus ring is smooth and the extra reach is exactly what I needed for bird shots.