Lens filters come in a wide variety of different shapes and sizes. You have colour-enhancing filters, polarizing filters, neutral density filters and more. Within each of these categories are a series of subcategories; neutral density filters, for example, decrease the amount of light that enters your lens, without changing the colours that come through (hence the term “neutral”). In a category all its own is the ND1000 filter. It’s one of the strongest neutral density filters available, letting in 1024x less light than the lens normally allows. So why the heck would anyone want to do that?