I believe that the graduated gray filters work based on what I've seen in several different publications. The before and after pictures convinced me. I bought the Cokin P ones because they're cheap and I wanted to make sure they made a difference before I went for the expensive glass ones. I used them last weekend and I haven't gotten my pictures back yet so I can't tell you how I did. I can tell you that it's difficult to see the line between light and dark when you look through the viewfinder. You have to stop down pretty far for the filter to work effectively and the viewfinder gets dark enough that it's hard to see the difference that the filter makes. The articles mention that turning the filter makes it easier to see.
I'll keep practicing... Tom Reese Stephen Moore <[EMAIL PROTECTED]> wrote: "Lately I've been feeling the need for an ND grad, which sort of precludes the screw-on approach. The Cokin P system, at 84mm, seems big enough for most Pentax lenses except the really big glass and one of the 6x7 lenses that has a 100mm filter diameter. Singh-Ray seems to favor this size as well. I'd be happy to hear comments, praise, damns-with-faint-praise, caveats, yike-don't-do-thats, etc. from the assembled wisdom."
