tuttifrutti wrote in post #18496370
I've been doing a little bit of reading up about taking shots of water/waterfalls/moving water, and it looks like, unless I am getting out and taking the shots as the light is fading, i'm going to need an ND filter.
I came across a web page recommending getting a 3 stop one and a 6 stop one, thoughts being that I have plenty of options covered using them singularly and also, then can stack them for brighter times etc
So, just after others thoughts on this and also recommendations for particular ones to look at?
I have a Canon 5D mkIII and a 24-70 f/2.8l mkII lens
Many thanks in advance
Think about this, and you can figure out what you might need...
- Using Sunny 16 rule, you know ISO 100 = 1/100 f/16 in bright sun
- If you assume you need to get the 'liquid blur' from water motion at 1/8 sec, that is about -4EV below Sunny 16 (1/100, 1/50, 1/25, 1/12, 1/6)
The big question is "What degree of blur do YOU think is 'enough blur' for water motion?"...and THAT depends upon falling water vs. flowing water vs. ocean water, and also how much blurring/smoothing you think suits the mood that you are trying to capture in the photo.
As for the suggestion about using a CPL in lieu of -3EV ND, THAT is misleading! While CPL might reduce POLARIZED light by -3EV, it affects an ordinary scene (light not polarized) by only about -1.5EV (this basic neutral density value depends upon the polarizing foil used in the filter...some lose more light or some lose less light)