Overview of NegaFix
NegaFix is a
real-time negative film optimisation facility that has been
designed to handle many different types of negative film stock,
e.g. Black and White and
of course Colour. LaserSoft Imaging have initially included
profiles so that the process of editing negatives is now easier than
ever before. The film options include: vendor, type, group and speed.
Best of all NegaFix is compatible with the full range of scanners currently supported
by LaserSoft Imaging, including Nikon. I've been
fortunate enough to use the new version of SilverFast on the
Polaroid SprintScan 4000 and 120 models along with SilverFast
HDR. The following is a summary of the various controls
and brief overview of how NegaFix
Step 1 - Getting SilverFast ready for negative
After opening SilverFast Ai or HDR
we must configure SilverFast for negatives, this is done from within
the "General" tab of the main control
panel. Once the user chooses to scan a negative the NegaFix
control panel should appear on the desktop.
Selecting the Film Type
Insert the "Uncut"
filmstrip holder into the scanner gate. If you've previously
scanned negatives a preview of the last image will appear along
with the NegaFix control
panel shown below.
Panel - Basic Configuration
Step 2 - SilverFast
In order that the final scan matches the preview screen it's important that the
"CMS" dialog found in the "Option" panel is configured as shown below. Actually SilverFast
reconfigures itself when
NegaFix is selected.
Specifically, users will find that SilverFast automatically disables the calibration profile and defaults to
"None" and the Input profile is ignored.
In the Profiles for ColorSync/ICM "Internal" choose the colour space that corresponds with what you have chosen in Photoshop. When
NegaFix is chosen this is the profile that will be embedded in our images. SilverFast ignores the scanner or calibration profile, although the preview display will still be correct.
Configuration of Colour
Step 3 - Creating the overview scan
pressing the button
the "Overview" window will appear. Simply choosing the "Refresh
Overview" button will cause the scanner to quickly create a
group of thumbnails for each image on the filmstrip. Make your choice
and press "OK".
Overview scan of images available
on film strip
Step 4 - Making the pre-scan
the "Frame" tab
select your scan resolution, etc. Of course make sure the "Q-factor" is set to "1" and the "Filter" is set for "None".
Also ensure the tool palette looks like the one shown below, otherwise
hold down the "Alt"
key and press the "Option"
button to reset all previous corrections. This step MUST be
undertaken so that we may be sure that the characteristics of the
previous scan are not carried over.
You can now press the "Prescan"
button and watch the image appear on screen. Typically the
pre-scanned image will look bad, this is almost always down to the
cropping boundary not being correctly set. To ensure correct
operation of NegaFix it is essential
that the cropping boundary for the pre-scan image is set so that NOTHING
other than the actual image is included.