ProMaster HGX Prime IRND 100mm 方形濾鏡 ND32000x (4.5) – 15級

I was worried about color casts with a 15-stop ND, but the IR suppression on this filter keeps blacks perfectly neutral even in harsh midday sun. The Repellamax II coating actually works — dust and water droplets just slide off, no need to wipe before every shot. My long exposures are sharper than a

The ground and polished glass is noticeably smoother than my other square filters, and the Repellamax II coating actually beads water off like magic. I shot a 15-stop long exposure at noon and the infrared suppression kept the blacks perfectly clean, no color cast to fix later.

Finally a filter that doesn't introduce that nasty color cast in long exposures – the infrared suppression is a game changer for my coastal seascapes. The Repellamax II coating actually works, cleaning off sea spray with just a breath.