It has been my observation over the years that
most of the VueScan bugs reported to this newsgroup are isolated to
only a few of the now 400 supported scanners.
You wrote: That's not really correct. There are many VueScan bugs
which span all
scanners. The perennial preview bug (not corresponding to scan),
regularly recurring "can't scan at all", not to mention all the bugs
related to data corruption which affects all images regardless of
source, etc.
All scanners? Not on my LS-4000 or N1240U (LiDE30). Yes on my LS-4000
the preview can be different from the final scan because the first
preview is done at an exposure = 1. The final image will be done at
the exposure calculated in the preview step. If Lock exposure is check
and preview is done again, then the preview will look basically like
the final scanned image because both will be done at the same exposure.
Moreover, I have not experienced the recurring "can't scan at all", or
any bugs related to data corruption which affects all images.
Coolscan bugs, especially those affecting the quality of the output,
are you aware of? I just finished scanning some Kodachrome slides and
Supra color negatives with my LS-4000 today and didn't encounter any
bugs that affected the high quality of the output.
You wrote: That's an elastic question because first we need to define
"quality".
For someone (and I don't mean you, but in general) who scans for web
quality means something completely different than to someone else who
scans for archival purposes.
I was asking you to list bugs you have experienced using VueScan and
your Coolscan scanner. For each "bug" you list, please fully define
your image quality criteria that you use.
You wrote: Specifically, there were many problems (still outlined in
the
archives). For example, unpredictable interaction of various (secret)
options. Do note that today - over two years later (!) - there are
currently two threads dealing with this very same thing!! Then there
were problems with sharpening (medium was sharper than low) constant
corruption of the INI file, dust and scratches corruptions, etc. As I
say, it's all in the archives.
Let us limit our discussion to CoolScan scanners since we both have
used them with VueScan. Based on my 4 years use of my LS-4000 and as
applicable my 3 years use of my N1240U (LiDE30):
1) I have never experienced unpredictable interaction of various
options. Yes the Users Guide is terse and sometimes cryptic and does
not include all the technical background, but what documentation is
great especially for software costing much less than $100?
2) I have never experienced the sharpening problem you list.
3) I have never had a corrupted ini file. Yes, I have had to delete
an old ini file when Ed add new features and start clean. Agreed a
hassle, but not due to corruption.
4) I have never had any problems with dust and scratches corruption
(if this is even applicable to the LS-4000)
You wrote: In a nutshell, VueScan always insists on "doing things" to
the image
even when everything is turned off. The reason is clearly that data is
in a very poor shape to start with (see noise in review, the infamous
Minolta stripes, etc) so VueScan is forced to try to mask this
extremely poor quality with various "adjustments".
Please list everything VueScan does to the Coolscan image when
everything is turned off that is not done by NikonScan.
I do not think the poor shape of the data that you list is applicable
to the Coolscan. Please list the details of the poor shape data coming
from your Coolscan (you define poor shape) and specifically how Vuescan
adjusts the data to make up for this poor quality (you define quality).
You wrote: Be that as it may, the key point which I keep repeating
(and it keeps
being overlooked) is that if people don't care for such level of
detail or quality and are happy with what they get, that's fine.
What's not fine is making unsubstantiated statements about VueScan
"quality" based on what their scan looks on a web page.
Please define "such level of detail or quality" that some people don't
care about (ie., substiantiate your definition of quality) based on
your experience with your Coolscan scanner and VueScan.
Jeff