Re: lens brightness

[Aaron Reynolds]

Martin Trautmann wrote:

> In fact I don't know why this should be done. 28-70/3.5-4.0 should be
> superior to 28-70/4.0!?

...unless you use a hand-held meter, in which case you won't be able to
set your exposure exactly because you don't know what aperture your lens
is at.

-Aaron
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