NiSi 100x100mm True Color Square Polarizer

This filter cuts reflections on wet rocks better than any I've tried before, and the colors in my landscapes look richer without any weird color cast. It locks into the holder firmly, which I appreciate when I'm hiking.

Glare on a waterfall was completely gone, and the sky's blue looked deeper without any weird color cast. This is the first square polarizer I've used that doesn't shift the entire scene yellow or cyan.

I’ve been using this square polarizer for landscape shots, and the color saturation in autumn foliage is noticeably richer without looking fake. The frame fits smoothly into my holder, and it rotates easily to dial out reflections.