graywolf wrote: > > Why a brick wall. The grid of bricks allows you to see barrel or > pincushion distortion very easily. You can see if all corners and the > center are in focus at the same time. The rough edges of the bricks show > how well the lens resolves macro-detail (Macro-detail is detail of a > size that matters to your in your photographs. Who cares about how it > does on something you can't see without a loupe?) I use slide film for > these tests as I don't want to have them messed up by processing errors, > if you can read negatives well that is ok, but prints are pretty much > useless for testing. Pleae note that if all your lenses have pretty much > the same problems that indicates, most likely, that there is something > wrong with the camera instead of the lenses.
Good points. The problem for me would be finding a brick wall. :-) (CA has a lot of "new" buildings, especially in this area.) Marnie aka Doe
