wrote:
In article . com,
Steven Woody wrote:

i want to know which one is better when pushing? and which one is
faster ( in real ASA )?

The real "ASA" is the one printed on the box. Pushing only increases
the slope of the curve, i.e. it ups the contrast.

by real 'asa', i mean the film speed acording to human experience when
use a film in practice.

pushing increases the overall contrast by means of move most lower
value zones to high value zones, hence increases brightness. that's
kinda of human feeling of 'speed'.

please answer the queston directly. thanks.

-
woody