|
The print used in the discussion of
scan density range was scanned in "Sharp
Millions of Colors" and "Sharp Black and
White Photo" modes. It is a print made by
exposing Ilford Multigrade FB paper with a
Kodak Step Wedge. In this example, only
the exposure made with 120cc yellow light
(VERY soft paper setting) was used to
extend the measurable range as much as
possible.
Although the color scan produced
noticeably less "D-Max" (a Photoshop value
of 19 as opposed to 2 for the grayscale),
the full range can be restored within
Photoshop, indeed could have been achieved
with a slight pre-scan adjustment.
There is a significant difference
between the color and grayscale scans, not
in quality, but in the shape of the curve.
No pre-scan adjustments were made for
either scan, leaving open the opportunity
for adjusting either to match the other.
Although the red, green, and blue
curves appear similar in this example, the
illustrations below might lead one to
question the similarity.
| 
