What is exactly the problem? (blurry on one corner, two corners, all corners?) What format? What negative carrier? What lens?
Something to consider is that bigger the magnification the less your baseboard/easel flatness matters. Also, as magnification increases, the more your negative to lens alignment matters.
For a 16x20 from 35mm negative, one side of the easel can be up in the air 2 inches and it should still be in focus.
So, it is possible that the easel is not the culprit.
Are you sure the negative is held flat?
Is the negative centered on the image circle (flatness of field will diminish at the periphery of the image circle)?
Last edited by ic-racer; 03-31-2009 at 06:40 PM. Click to view previous post history.