All theory for now - I've just been reading. I got the idea that in the
case of bad negatives VueScan might help by getting higher exposure in
one or more separate channels (pardon if I don't get the terminology
right) and that the Nikon couldn't do this by itself. I may have
understood incorrectly.
This is something I've been wresting with quite a bit (dark Kodachrome
slides). It's a bit hard to explain, especially in theory.
Nikon Scan exposure is limited to +/-2 EV (exposure values) per
channel for a cumulative maximum of +/- 4 EV. This is *in addition* to
auto exposure so for all practical purposes you will never need more.
In other words, Nikon Scan determines the optimal exposure and then
enables you to go +/- 4 EV from there.
Vuescan exposure is open ended but there are many problems. First,
it's non-standard using a "multiplier" instead of EV. Second, it's not
as clear as EV because it start with 1. This means for negative
exposures you only have values from 0 to 1, while for positive
exposure it goes from 1 to (theoretically) infinity. To double the
exposure you double the value. In case of EV you just increase by 1.
But the biggest problem with Vuescan exposure is it's buggy! Once you
go over a certain value Vuescan exposure becomes erratic and the
display does not correspond anymore to the actual values used.
Anyway, I always like to have several options so if one approach doesn't
yield what I hope I could try another. Without actually having touched
the film scanner I can't be more specific than that, really.
I do understand that most scanner software settings are indeed image
editing - but is exposure?
No, you're right. Exposure is a hardware function as is ICE (automatic
cleaning of dust and scratches). This is done by using an infrared
light source in addition to normal RGB LEDs.
Vuescan can get this infrared data too but the difference is what is
done with this data afterwards. Nikon uses ICE software while Vuescan
has its own so-called "infrared cleaning" which is far inferior and
there are constant reports of bugs and problems. ICE is several orders
of magnitude superior as well as much more reliable.
Doesn't seem possible ;-)
Well, there are ways but it gets very complicated and messy. You need
to "wedge in" a software routine to intercept USB communications and
"spoof" a scanner. In a word, it's not worth the trouble.
I thought the 3300c was a derivative of another scanner (2200?) so my
guess was that it might have the same or a not a very different set of
command codes. I was hoping I could try that out.
Yes, in theory, most commands should be the same but there are always
differences. However, the problem is getting Vuescan to acknowledge
the scanner in the first place.
Whether you like the user interface or not - a user interface it is. ;-)
When a user interface gets in the way of the user it's hardy a user
interface. More like user "interference". Hey, I like that! ;o)
"Vuescan's user interference"!
Seriously though, using it in the "scan from disk" mode will let you
get the feel for the user interface. One other hint. Vuescan gets very
easily "confused" and if that happens (you start getting weird
results) delete Vuescan.ini and start again.
BTW, if you want to compare, download the Nikon Scan User Guide as
PDF and flip through it. It's not the same as actually using it, but
there are a lot of graphics to give you a hint of how things are done.
Mostly I want to scan in my archive of travel photography - many rolls
of negative film. And yes, in general I want it to be good quality
scans, but a quick and dirty scan to make a preselection for instance
might come in handy (I think...). I want to put the best ones online,
may also try to sell some of my work.
Then you definitely want to get the most out of them which means
scanning "raw". There have been many messages about this, but
basically it means *not* using any of the scanner software editing
features and only using scanner software to control the hardware.
A raw scan is basically maximum resolution and maximum color depth.
That is then saved as your "digital negative" and you do all your
editing in an external editor (e.g. Photoshop) on a copy.
In that case you should really be very weary of Vuescan! Not only is
it far too buggy and unreliable for such precise work but its vastly
inferior "color management" is more trouble than it's worth.
Then there are some "pictures of text" where all I want is the actual
text - doing that directly with VueScan's OCR function sounds
attractive, if it works well enough. But I wonder what it (or any OCR
software for that matter) would be able to work with text with a
perspective distortion - I'll have to experiment.
I have no idea how good or bad Vuescan's OCR is. I can only go by
"circumstantial evidence" i.e. judging by all the other features. And
if Vuescan OCR is like the rest of Vuescan then it's pretty bad.
You'd be far better off getting a proper OCR program. I've done some
OCR but very little. I used an old version of ABBYY Fine Reader and it
produced some amazing results. It's never 100% but it comes very
close. It even recognized columns and images etc. The recognition
improves quite a bit with a good dictionary. It's still advisable to
run it through a spelling/grammar checker afterwards.
I had a cheapo PrimeFilm scanner before (though it was a lot more
expensive then than it is now), but it broke. I used it just enough to
learn that I did want to digitize all my films but that I definitely
needed something of a much better quality and more reliable.
I'm just back from another trip with 45 rolls of film - and I'm
frustrated I cannot do what I planned with it yet. :-( But I'll need a
new computer as well - it'll be a while before I will actually be able
to start practicing with a new scanner. (sigh)
I know... Same here. I don't shoot analog film anymore, but I can
certainly do with a new computer. And there are always other things
which get in the way. I've been wrestling with my Kodakchromes for
about 3 years now. Every time I start making progress, life gets in
the way... :-( Anyway, just finished my last roll of KC so it's on to
Ektachromes next. And then there are still the negatives! I haven't
even began to tackle them so more fun ahead...! ;o)
Don.