Graduated filter, 50% or 25%

I'm planning to buy a graduated grey filter by B+W. They have two types, one which darkens upper half by 1 stop and one that does 2 stops. Which one would be more usefull in general landscape photography?

Seriously, take both.

Some days you want 2 stops, sometime 1 and sometimes 3.

Cheers

Ian

Thanks for your input. I think I'll go for 2 to begin with and add 1 afterwards...

I'm also going to get a polarizer. I think it's gonna be an MRC since I've heard that Kaesemann MRC only adds to the price. Opinions?

What about the filter edge? I suppose I don't need slim model to go with 17-40 on 1.6 crop but what about full frame? What is the effectice focal length when vignetting starts with normal thickness filter?

Hi,
Please remember that with the crop factor of the 10D/300D/20D you have very little use for such a filter, I bought one and it barely works because the active area is not in my view .

Greetings,
Frank

J.A.F. Doorhof wrote:
Hi,
Please remember that with the crop factor of the 10D/300D/20D you have very little use for such a filter, I bought one and it barely works because the active area is not in my view .

I thought that dark area reaches into middle of the filter so crop factor doesn't matter?

The flow from very dark to not so dark, and the not so dark area works indeed.

Is there somekind of step-up ring with no increase in thread size (like extension tube)? That would probably do the trick...

COULD be an option I never thought of that I just left it in my case for when I buy a full censor.

Greetings,
Frank

yes there is, also you can just get an old filter and take out the glass, then you have your ring!

More user experiences of graduated lenses on 1.6 crop cameras are welcome. Would somebody recommend them?

I have no idea what a graduated lens is.

However, I use a graduated neutral density filter occasionally. I use the Cokin system, and it works fine on a 1.6 factor camera with a lens of focal length 20 to about 40.

---Bob Gross---

Doesn't it work with longer lenses ?
How's the optical quality of this Cokin set ? They are resin filters, aren't they ?