Singh Ray Thin 67mm Screw-In Mor-Slo Neutral Density ND-10 Stop Lens Filter | eBay
Thank You Singh-Ray! - Cole Thompson Photography
Singh-Ray Filters - "Photographing the Scottish Highlands with the Mor-Slo 10 Stop Filter" by Ronald C. Mondra. Read it here: https://singh-ray .com/equipment-technique/photographing-the-scottish-highlands-with-the-mor- slo-10-stop-nd-filter/ | Facebook