Digital BW, The Print

> Here is a good review:
>
> http://luminous-landscape.com/reviews/lenses/canon-17-40.shtml
>


Well, just to another opinion, I've been testing my lenses for years with
traditional resolution charts.  While I've been a big fan of Modern
Photo/Pop Photo tests, I've always found their tests have only a vague
correlation to what I see and my experience in real world shooting.  The
Photodo tests have a very high correlation with my tests & experience.  The
subjective, verbal "tests" (Shutterbug's, for example) are worthless.

When I see actual photo comparisons of lenses from an apparently honest
source, like Luminous-Landscape, I give it more credence than the Pop Photo
MTF or Resolution tests.  I'd put it right up there with the Photodo
information.  (Moreover, while I agree that, in theory, the MTF curve is the
best way to test, I'd put many times more faith in the comparative photos
than the Canon published MTF curves.  I'm a big fan of Canon, but I think
the MTFs must be coming from their marketing department.)

Paul
http://www.PaulRoark.com