ND fader filter or cokin square filter

[CamholicX]

Which is better? Purpose is to take silky sea water during the day.

 

[SkyStrike]

For NDs, I would take a fixed stop ND than a variable ND. For Fixed stop NDs, I would say either go for Hoya, B+W or Lee. I believe Cokin do not have 6, 9 or 10 stop ND filters.

 

[Octarine]

Which is better? Purpose is to take silky sea water during the day.

That depends also on your usage. Cokin slot in allows quick changing and the combination with GND of the same brand (or the cheaper copy from Tianya). You will need the holder and the adapter ring for your widest lens, plus step up ring(s) according your lens(es).
Fixed screw in filters take more time to change, you will need the step up rings as well but for any GND you will need the holder and ring anyway.
According Filters for Photographic Lenses - Creative FIlters - www.cokin.co.uk Cokin has ND2 (1 stop), ND4 (2 stops) and ND8 (3 stops) types. With a 3 slot holder and 3x ND8 you can achieve 9 stops maximum.

 

[CamholicX]

For NDs, I would take a fixed stop ND than a variable ND. For Fixed stop NDs, I would say either go for Hoya, B+W or Lee. I believe Cokin do not have 6, 9 or 10 stop ND filters.

How come not variable ND?

 

[rhino123]

How come not variable ND?

When using the Vari-ND filter, you might get a 'X' effect at some point.

An In-Depth Comparison of Two Variable Neutral Density Filters

So far my vari-ND filter can only give me up to (at the most) 5 stop before the 'X' effect came in... and so in the end, I gave up and buy myself a Hoya ND400 and thats it.

 

[SkyStrike]

How come not variable ND?

Ans as mentioned by Rhino.. Also to note, inferior grade Vari-ND filters may even give you lesser than 5 stop before the X comes in.

Another point to note about the stacking of 3 x ND8 mentioned by Octarine, you will likely get some form of color cast. So, it's still better to get those numbers that you think will serve you better.


So far, I see 6 and 10 stop ND as more useful to ME. *I don't own a 6 stop ND, but many times I wish I had that instead of the 10 stop which I own.*


A good resource to read on filters: http://www.clubsnap.com/forums/newbies-corner/803029-newbie-guide-filters.html

 

[catchlights]

Which is better? Purpose is to take silky sea water during the day.

hope you are not try to shoot during noontime on a sunny day, 10 stops is the limit for the ND filters.

most people will do that during cloudy day or twilight in order to get a 10 sec or more exposure time

 

[daredevil123]

When using the Vari-ND filter, you might get a 'X' effect at some point.

An In-Depth Comparison of Two Variable Neutral Density Filters

So far my vari-ND filter can only give me up to (at the most) 5 stop before the 'X' effect came in... and so in the end, I gave up and buy myself a Hoya ND400 and thats it.

How soon you get cross banding also depends on the focal length used. The wider the focal length the faster you get cross banding.

 

[shierwin]

hope you are not try to shoot during noontime on a sunny day, 10 stops is the limit for the ND filters.

most people will do that during cloudy day or twilight in order to get a 10 sec or more exposure time

At noon he can try using 2 pc 10-stop ND filters Anyone tried?

 

[digitalpimp]

At noon he can try using 2 pc 10-stop ND filters Anyone tried?

The most I did was 18-stops with a B+W ND110 and LCW Fader ND. The result wasn't so bad.

 

[saberlancer]

I made the mistake of not putting my LCW Fader Nd in dry cabinet because I treated it as filter, and not a lens, BUT now theres fungus in between!

Haiz cannot clean cause its inside, wonder if theres any way to open up..