What size ND grad for 72mm filter size?

[jay_chartwell]

I'm shopping for ND grads and the lens with the largest filter size I'm using

is 72mm that's on a 25-50 zoom. Are the 85mm rectangular filters in the Cokin

P mount going to be big enough to fit and not cause vignetting?

[akajohndoe]

I have used Cokin P with up to 77mm successfully.

[akajohndoe]

Although I did shave off the outer two filter holder slots on the holder.

[danny_wong2]

For wide angles use the Cokin P they go up to 82mm.

 

HOWEVER-

 

If you use the normal three slot readily available holder you should cut/shave/remove the outer two slots so not to interfere with your image. There is also a harder to get wide angle Cokin P holder which only has 1 slot but it is more expensive than the three slot one.