Fotodiox Pro 84mm スター（4/6/8ポイント）フィルター - Fotodiox Pro 84mm フィルターホルダーおよび Cokin Pシリーズ (M) フィルターホルダー対応

I was skeptical about polycarbonate filters, but the CR39 material here is surprisingly clear and scratch-resistant. The 8-point star effect on streetlights came out sharp and dramatic in my night shots.

Really easy to switch between the 4, 6, and 8-point effects, and the stars come out crisp even with bright streetlights in the shot.

Was worried the multi-coated CR39 would be too delicate, but it's held up fine after a few shoots. Turned a harsh streetlamp into a clean 6-point star that really made the skyline pop.