Graduated filter, 50% or 25%

[PekkaM]

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?

[iwatkins]

Seriously, take both.

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

Cheers

Ian

[PekkaM]

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?

[J.A.F. Doorhof]

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

[PekkaM]

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?

[J.A.F. Doorhof]

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

[PekkaM]

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...

[J.A.F. Doorhof]

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

[ifurlong]

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

[PekkaM]

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

[robertwgross]

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---

[Olegis]

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