Larry Colen wrote:
I doubt these lenses do any worse on digital than they did on film. We are
just looking more closely at the results.
My reply:
Yes, this is another important point. Now we don't accept as decent a lens
performance which was perceived as great on film.
Another main factor is lens performance over image field. Old lenses on 24
to 36 MP FF can be rather good at center, but will look poorer and poorer as
you go towards corners and wider apertures.
On APS-C, the same lens will look perhaps one step worse at center (yet
usually still acceptable) and not so much worsening at corners (just because
the very bad areas at corners are cropped out by smaller sensor). This is
what I mean about older lenses being more useable on APS-C than FF.
Dario
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