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
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Amazon.com : Singh Ray 82mm Mor-Slo 10 Stop Neutral Density (ND1000) Filter Thin Mount : Electronics
Amazon.com : Singh Ray 82mm Mor-Slo 10 Stop Neutral Density (ND1000) Filter Thin Mount : Electronics