> In article <41hs9e$jb4@news.duke.edu>, yuji@chem.duke.edu says...
> >A basic question (perhaps an FAQ, but I could not find it):
> >Is there any difference in an image shot on, say, a 300/4
> >at f/5.6 vs. a 300/2.8 stopped down to f/5.6 (Other than those
> >attributable to the "higher lens quality" of an f/2.8 vs. f/4
> >lens)?
>
> No - the only differences are those attributable to the
> quality characteristics of the particular lenses involved
> (light transmission efficiency and evenness, resolution,
> contrast, distortion, true focal-length, flare and internal
> reflection resistence, accuracy of the diaphram in matching
> the marked apertures, etc.). Hope this helps.
>