I will run a test. I believe my eyes more than physics. :) It is my impression that I started seeing dust when I started taking macro pictures.
> > DISCLAIMER: Of course I could be completely wrong ... > > You are completely wrong ... ;-) > > "Effective aperture" is a misnomer. The aperture in use does not > change, as I said above. The illumination has been reduced by distance, > so the "effective aperture" is simply referring to the amount of light > that results from the falloff together with the set aperture. > > DoF has nothing to do with the imaging of dust on a sensor (or film), > nor does this "effective aperture" reduction in illumination ... it's > purely a shadow game. See the post I just sent a moment ago with an > illustrating picture. > > Godfrey > >
