ND Filters for video work?

Paul_Canning · 8 Mar 2010 at 00:31

Hey folks.

Tested out my new 7D today along with my nifty fifty (1.8 variety) and noticed that I will need to use an ND filter when shooting wide open.

Can anyone tell me what the test number filter to get is? I know they are graded differently, but no idea which i should go for?! Or could I get a set of 2/3 filters?

Hope you can help!

Paul_Canning · 8 Mar 2010 at 21:40

40 views and no one on here has any suggestions?!

Hodders · 8 Mar 2010 at 22:21

I think you need to explain what you are trying to achieve, if shooting wide open is a problem, then can you not reduce the ISO or shorten the shutter speed ?

Paul_Canning · 8 Mar 2010 at 22:24

MY shutter speed needs to stay at 1/50 (shooting 24p footage) and the lowest ISO i can use is 200, which still gives me overexposed footage.

Despite my shooting parameters, I just want to know roughly what kind of ND filters would be useful? I found a set of 3 on the auction site, ND2, 4 and 8.

Will these be any good?

alexakasloth · 8 Mar 2010 at 22:51

There's a graph on wiki which has the relation between fstop and 2/4/8 etc.

http://en.wikipedia.org/wiki/Neutral_density_filter#Varieties

On the cameras we use at uni for onlocation filming (dvx 100) they have a 1/64 setting which give's a good result in use with the iris.