Leica E39 UVa II Filter (Black)

Snapped this on my M body and the build quality is immediately obvious — the brass ring threads on smoother than any other filter I've used. Images look clean with no added color cast, and it’s taken a few bumps without a scratch on the glass.

I was pleasantly surprised at how well this filter reduces that blueish tint on sunny days—my outdoor shots look much more natural now. It threads onto my lens smoothly without any wobble, and the black rim matches perfectly.

The metal ring feels incredibly solid when screwing it on, and the glass is perfectly clear. It cut down a bit of the harsh midday glare during a walk in the park, exactly what I needed.