What is a 0.9 ND filter?

What is a 0.9 ND filter?

A 3-stop ND filter is also called a 0.9. Now you know this optical density number it is simply the Log of the factor by which light is decreased!

How many stops does an ND .9 filter cut?

Those numbers are right for ND 0.3, 0.6 and 0.9. An ND3 cuts the light by 10 stops, an ND6 by 20 stops and an ND9 (if that exists) by 30 stops.

Which ND filter is the darkest?

If you are a little bit lost, do not worry; all you need to understand is that “darker” ND filters block more light. ND8 is darker, ND2 is less dark. A 0.9 ND Filter is darker and a 0.3 ND filter is less dark. A 3 stop ND filter is darker and a 1 stop ND filter is less dark, and so on and so forth.

What do the numbers on ND filters mean?

These refer to the amount by which the light is diminished. An ND2 filter halves the light, while an ND8 filter reduces it to one eighth. 1 stop, 2 stops, 3 stops, etc. Sometimes these are referred to as EV, for exposure value.

What ND filter to use for waterfalls?

Neutral density filters The most popular choice of ND I would recommend for waterfalls is a 3-stop (0.9) ND filter, although you can get much higher versions right up to the 10-stop (3.0) filters that will allow you to shoot well over thirty second exposures in the midday sun.

How do I know which ND filter to use?

If you want to start with long exposure photography, I suggest to start with a 3, 6 and 10 stops filter. Bottom line, if you love long exposure images, and you shoot a variety of different landscapes, it might be advisable to choose three filters. A 3 stop, a 6 stop, and a 10 stop filter would be ideal.

What is the most useful ND filter?

6-stop Neutral Density If you’re a landscape photographer who wants to shoot long exposure sunsets, sunrises, waterfalls and moving water, the 6-stop ND is without question the best performing and the most versatile ND filter.

How many stops do I need on my ND filter?

For long exposure shots like below with clear water and blurred clouds you will want a 6 stop or 10 stop ND filter as this will give you an exposure time of at least 30 seconds and up to 4 minutes. The higher stop filters will enable you to get those long exposures.

Can you stack ND filters?

One technique photographers use is filter “stacking.” If you have more than one ND filter, you may combine the two (or more filters) to get more ND stops for different photographic needs. The stacking math is easy: If you combine a 6-stop ND filter and a 10-stop ND filter, you now have a 16-stop ND filter.