HP5+ vs Tri-X when pushing
In article . com,
Steven Woody wrote:
by real 'asa', i mean the film speed acording to human experience when
use a film in practice.
That would be EI. ASA (now ISO) has a strict definition.
pushing increases the overall contrast by means of move most lower
value zones to high value zones, hence increases brightness.
The lower zones don't change much at all with longer processing (other
than increasing fog base). All you do it increase contrast.
that's kinda of human feeling of 'speed'.
No, it isn't.
please answer the queston directly. thanks.
Please do some tests and answer it for yourself.
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