PhotoCO 1.7x 自動對焦增距鏡 for Nikon N/AF（僅適用於 35mm 底片單眼相機 Nikon 接環）

I was worried about losing light with a 1.7x converter, but the autofocus on my Nikkor 50mm f/1.8 still locks quickly in decent light. The glass is clean and sharp enough for my film shots.

The build feels solid and the glass is clear—no noticeable loss in sharpness even at the long end. It clicks into my Nikon mount with a satisfying firmness, and the autofocus keeps up just fine for outdoor portraits.

The autofocus locks on noticeably faster than the bare lens I was using before, and the extra reach makes a real difference with my 50mm prime. Build quality feels solid for the price, no wobble in the mount. Finally got usable wildlife shots from my old Nikon film body.