Is there a label on the filter showing the stop reductions (i.e 2,3,4,5,6,7,8) or is it just "min . . . . . . max"? I need to know that I am at 4 stop reduction for example. How do I do that?
There are marks on the side of the filter indicating stop reductions. These are indicated with dots, not with the numbers per se. It starts with an triangle indicating "Min" (1), two lighter grey dots (2,3), one ligher white dot (4), then three grey dots (5,6,7), finally an arrow indicating "Max" (8). They assume you can do the math, but numbers, and some lines in-between, would have been helpful. However, such a system probably would have resulted in considerably higher production costs, hence a more expensive product. This is a very good ND filter, somewhat heavy but well-built, and no apparent optical problems. I like it a lot!