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Continue to ChatNeutral Density and ND-Grad Filters - what's the use? https://www.paulreiffer.com/2012/03/neutral-density-and-nd-grad-filters-whats-the-use/
Neutral Density and ND-Grad Filters - what's the use? https://www.paulreiffer.com/2012/03/neutral-density-and-nd-grad-filters-whats-the-use/