ns of rods and cones
> varies across the retina. And if I remember right, rods are
> not truly panchromatic.
Also, I think rods are pretty much saturated in normal daylight conditions,
so the brain ignores them. In night vision, the cones are putting out zero,
so the brain ignores them.
--
> From: Mike Kersenbrock
>
> Those LED's really bright enough for a large screen?
LEDs can definitely be bright enough for a projector, nowadays. Furthermore,
they have a very wide gamut, since they are very pure colors.
--
Ciao, Paul D. DeRocco
Paul
> From: Austin Franklin
>
> BTW, why would the stepper motor pitch change (if you mean pitch as it
> relates to distance, not to sound...if it relates to sound, then, well,
> forget I asked ;-), which I assume, means it changes resolution?
I mean audio pitch.
--
Ciao,
ough a meaningful spec standard could certainly be devised.
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nts at
that size, one always overrides it to get the desired print size.
This question keeps coming up. It would have been better had the inventors
of image file formats not included any ppi fields.
--
Ciao, Paul D. DeR
tion in both those test images was 10X,
so a full image would have been 30Kx20K. In general, one wouldn't use a
magnification that large, but the point was to make it easy to see what the
software does, in its effort to preserve sharpness.
--
Ciao, Paul D. DeRocco
Paul
ssage
had two copies of the same URL (sorry). Load the first himage, click on
Next, then use your browser's Back and Forward button to toggle between the
two images. They're VERY different.
--
Ciao, Paul D. DeRoc
Sorry, the two images are:
http://www.pbase.com/pderocco/image/36593399
http://www.pbase.com/pderocco/image/36593400
--
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Paulmailto:[EMAIL PROTECTED
ural edges as well as some non-edge
detail. You can see what I mean:
http://www.pbase.com/pderocco/image/36593399
http://www.pbase.com/pderocco/image/36593399
In the foreground, the artificial edge invention looks like some exotic
Photoshop special effect.
--
Ciao, Paul D. DeRocco
dges in it,
because it is somewhat able to recognize edges, and artificially preserve
them when blowing the image up. If you overuse it, say beyond 4X in each
dimension, it starts to look artificial.
--
Ciao,
27;s a mirror in the optical path that could have come slightly loose,
and might be crooked.
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found that the mirrors and condenser were filthy,
and the lead screw had enough accumulated crud on it that the wimpy stepper
motor couldn't push past it, but I had never had any problem with the thing
barfing dust all over the film.
--
Ci
ening elsewhere.
>
> I don't need everyone to reply, so if a few people indicate either that
> they did or did not receive a duplicate, unless your experience was
> different from those posted, it isn't necessary for you to reply publicly.
I only saw the one.
--
Ciao,
ch. If all you have is clouds, though,
Levels or Curves should work fine.
But that use of Unsharp Mask isn't really sharpening.
--
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Paulmailto:[EMAIL PROTECTED]
---
to doing any sharpening to this kind of subject matter?
> (Please say
> no - it would make life much easier!)
No.
--
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Paulmailto:[EMAIL PROTECTED]
or LEDs,
better profiles, different wavelength IR channel, greater DOF) in the 5000,
though.
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Paulmailto:[EMAIL PROTECTED]
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etc. Does
anyone know if there's some common failure mode that can be fixed with spit
and baling wire, or anything short of returning it to Nikon?
--
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Paulmailto:[
esents the same level of
black. If you display it in a color managed app like Photoshop, it will look
good, but you haven't lost any information--you can always fix the black
level later by just using an improved profile.
--
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Paulmailto:[EM
remain at
> a level of 248 and 10 when opened in Photoshop, or will these
> pixels now be
> set to 255 and 0?
255 and 0. If they stayed at 248 and 10 then there would hardly be any point
to the controls. ;-)
--
Ciao, Paul D. DeR
I know I can get a Nikon SF-200 for my LS-2000, but I'm considering
alternatives. Minolta used to make an SC-100 for the Multi II, and I'm
wondering if it works on the Multi Pro, or if the latter is mechanically
different from the Multi II. Anyone know?
--
Ciao, Paul
out twenty years. And it's all Kodachrome 25, no 64 or
200.
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Paulmailto:[EMAIL PROTECTED]
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. So
I'm trying to figure out how to make a real profile that has the right
response to work with VueScan. If anyone has done this, I'd appreciate any
suggestions.
--
Ciao, Paul D. DeRocco
Paul
t;
> see this 1982 brochure:
> http://www.canonfd.com/macrobrochures/closeupengl82.pdf
Thanks for that document. That explains a lot.
--
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Paulmailto:[EMAIL PROTECTED]
---
. It
might require a ND filter if the light's too bright. That would make it
really easy to step through a bunch of slides.
--
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Paulmailto:[EMAIL PROTECTED]
--
wondering what lens I'd need in order to match up the 24x36mm slide to
the 15x22.5mm sensor. That would indeed solve the DOF problem.
--
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Paulmailto:[EMAIL PROTECTED]
-
eave them in a box until some time in the future when I can.
Austin recommended the Leaf 45, which I could probably afford used. It may
be the ticket, although it looks about the size of a small drill press. ;-)
--
Ciao, Paul D. DeRocco
Paulmailto:[EMAIL PROTECT
e ones near the front and back of the other
boxes.
So are they hopelessly out of focus on your equipment, or can you manage to
coax more sharpness out of them than an LS-2000?
--
Ciao, Paul D. DeRocco
t shows the full 35mm frame. I think that Wess has been sold
> but I think that someone else is making the mounts. They are very good.
Thanks. I'll see if I can find some.
--
Ciao, Paul D. DeRocco
Paul
make them
much money, but I would think they'd be able to at least break even.
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Paulmailto:[EMAIL PROTECTED]
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end equipment, and do the much larger number of
clean slides myself. But I don't know how to find someone who can do it in
my area (L.A.).
--
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Paulmailto:[EMAIL PROTECTED]
---
e, have such
horrible ripples in them that they won't even lie flat when sandwiched
between two pieces of glass.
Besides, it's such a pain to do that, that I'd gladly buy a different
scanner if it would solve the problem.
Anyway, thanks for the inpu
used by
> misregistration. Temporary use of the Difference layer
> mode will show you what's out of register.
Yep. That's what I'm willing to spend $1000-$1500 to avoid having to do on a
couple hundred
http://www.mail-archive.com/[EMAIL PROTECTED]
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by Ed Hamrick's Vuescan must fall into that
category, or he wouldn't be able to support them.
But unless you're doing this as a hobby, and your time has no monetary
value, $50 a reel to get somebody else to do it
ewsgroup and see if anyone
has any suggestions.
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o
gamma to about 2 in the Curves box, and then
setting analog gain to R=1.5, G=0.5, B=0. I'm still mystified why I never
had this problem before, but at least I'm up and running. I've also ordered
a Kodachrome IT8 target slide, so as soon as that arrives, I'm going to try
pr
ear-long hiatus had scanned at least a hundred Kodachrome slides without
seeing anything like this.
Where is this "Kodachrome" film type specified in NikonScan?
--
Ciao, Paul D. DeRocco
Paulmailto:[EMAIL PROTECTED]
oblem.
Has anyone encountered a problem like this with NikonScan, and found a
solution? Any ideas?
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Paulmailto:[EMAIL PROTECTED]
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scanner?
I'd also appreciate any feedback on the FS4000, or on the CanoScan 9900F
flatbed when used for film or slides. As I said in another thread, I'm
looking to replace my busted LS-2000, and would like to find something with
better DOF, since I have loads of badly warped slides.
--
Ci
#x27;t take out. I
really think that increased DOF is the only way I'll ever get decent files
out of these.
--
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Paulmailto:[EMAIL PROTECTED]
see how much of a difference the
> 5400dpi is with the 4000dpi of the LS-8000.
Is it likely that a medium format scanner will have greater DOF than a 35mm
scanner, just because it needs it for larger pieces of film?
--
Ciao, Paul D. DeRocco
Paul
at info. I need a scanner that's _much_ better than the Nikon
in order to capture these slides, since they're really warped. That is,
unless I can find a better way to mount them.
Other than that, how do you like the Minolta?
--
Ciao, Pau
for more depth of field.
How much better are they? Will a Minolta (for instance) handle my rippled
slides just fine, or will it be only somewhat better? I'm trying to decide
whether I should invest in a new scanner, or fix the old one. I wish
scanners had standardized DOF specs.
--
Ciao,
ewton glass
mounts, and got visible grain. What scanners in the $1000 range have greater
DOF than the Nikon?
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Paulmailto:[EMAIL PROTECTED]
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glass, too. Since you only have a
limited number to scan, I suggest paying someone else to do it, maybe on a
high-end flatbed scanner.
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Paulmailto:[EMAIL PROTECTED]
-
.
> Are there any other settings I could try to try and improve the scan
> quality?
Does the LS-40 have digital ICE for dust removal? If so, try turning it off.
Kodachrome doesn't pass IR very well.
--
Ciao, Paul
, even apart from the extra bit
depth, so any bad taste that JPEG has left in your mouth shouldn't be
allowed to dissuade you from trying JPEG2000.
--
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Paulmailto:[EMAIL PROTECTED]
r web site. All the
> ones I saw
> so far were with the 10DS. Do you shoot film also? How large do
> you print from the 10DS?
Thanks for the compliment. I've printed some 10D stuff at 12"x18", with good
results--that's about
t I wouldn't call the color
"accurate".
What I'd like to find out is if the optics have a greater DOF than the old
scanners. That was the worst problem with them.
--
Ciao, Paul D. DeRocco
Paulmailto:[EMAIL PROTECTED]
---
cares? Qualitatively, Bayer sensors work extremely well, so
it's closer to the truth to say that a six-million sensor Bayer chip
produces a six megapixel image than to say that it really only produces a
1
on on the same raw data, you get
the same answers. That's not noise, it's distortion. What's more, for
real-world images, with the sort of detail on which people would recognize a
loss of resolution, e.g., sharp edges, modern Bayer algorithims _correctly_
i
a Bayer pattern interpolator doesn't introduce noise, unless it's
processing an image that already looks like noise, and it can't find
anything coherent to do edge detection on. But in that case, who cares?
--
images that you discover have visible
aliasing or moire, which in my experience is pretty rare.
--
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Paulmailto:[EMAIL PROTECTED]
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gh.) Then, the dithering algorithm generates
the actual dots from these pixels at whatever dot pitch the driver is set
for.
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Paulmailto:[EMAIL PROTECTED]
---
rds. The makers of QImage claim that
> to be true.
The 2200 driver has a "smooth edges" option, which I assume applies a better
resampling filter instead of using the dumb "nearest neighbor" filter.
However, I haven't tried it on a test image.
--
Ciao, Pau
.
The function that defines the intensity versus distance-off-center is
essentially a finite impulse response filter that is applied to the image.
--
Ciao, Paul D. DeRocco
Paulmailto:[EMAIL PROTECTED]
se software with a good resampling algorithm to resample to the optimum
resolution of the printer, or some integer submultiple.
--
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Paulmailto:[EMAIL PROTECTED]
-
nd then, if I suspect aliasing might be a problem, upsample in PS
to the next lower submultiple of 720.
--
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Paulmailto:[EMAIL PROTECTED]
Unsubscribe by mai
u had decided to
explicitly resample before printing. In this case, it would make sense to
choose the next highest resolution that divides evenly into the printer's
natural resolution, to avoid aliasing.
--
Ciao, Paul D. DeR
ts with a loupe. Believe me, the 10D makes very nice 12x18
prints.
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edge sharpness. Another
alternative in some situations, is to shoot multiple shots and stitch them
together.
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slides to scan, you'll probably be better off
paying someone to scan them with an automated machine. It's a lot of work to
do otherwise. I've had decent results with the old Kodak PhotoCD (not
PictureCD), but that was a few years ago, and I'm sure there are better
services out there n
an point me in the
> direction for a digital camera list, I'd be very appreciative.
Check Yahoo groups, and search for Canon. I expect you'll find something
appropriate. They've got a good list for the Canon 10D.
--
Ciao, Paul D. DeRocco
Paul
cent data in a dollar world.
As I said in another post, it appears to me, at least when scanning slides,
that film grain is the main source of noise, so there's no way around that.
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Paulmailto:[EMAIL PROTECTED]
digicams, the Minolta
DiMage 7 and the Canon 10D. In raw mode, the DiMage 7 has absolutely no
useful information in the extra four bits, under even the best
circumstances, but the 10D does.
--
Ciao, Paul D. DeRocco
Paulmailto:[EMAIL PROTECTED]
---
> From: Bob Frost
>
> Try using curves to limit the lightening/darkening to what part
> of the scale
> you want, and then use History brush to paint it in to where you want.
Good point. Thanks.
--
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Paulmailto:[
ay be necessary to move up
> the
> History state.
>
> This method is really nice because it avoids clipping the
> shadows/highlights.
Don't you miss the ability to limit the dodging/burning to
highlights/midtones/shadows? I find that pull-down box selection to be
p
using 8 bit/color pixels, instead of simply 8.
As I said in a post to Robert, if you have sufficient noise (from either the
CCD or film grain) to dither the finer gradations up into the top eight
bits, then the extra bits buy you nothing. That's equally true of B&W and
color.
--
nt curve
gives you noticeable banding in the latter but not the former. With enough
noise (whether from the CCD or the film grain), the extra bits won't matter.
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Paulmailto:[EMAIL PROTECTED]
---
is due to the diffuser over the sensor, since I'm
sure my 17-40mm L lens isn't the limiting factor. Too bad the diffuser can't
be flipped in and out, since the extra sharpness would be nice in situations
where moire isn't an issue. I think this particular test image (the
Nicholson St.
bit files are 233 MB! I might just accept your argument and
> reduce the
> size of my files back to about 100MB by converting to 8bit.
You might also consider a JPEG2000 plug-in, because it can do 16-bit
compression. I get 5X-10X with no visible artifacts. LuraWave's is very
good.
, but it is prone to aliasing and moire.
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anners have trouble getting good focus from center to edge, because of the
curvature of the slide.
--
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Paulmailto:[EMAIL PROTECTED]
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fore be more reliable than the fancy focal-plane
moving-curtain shutters used in SLRs.
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Paulmailto:[EMAIL PROTECTED]
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r adding autofocus, so there's
little new to drive down the price of the old.
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Paulmailto:[EMAIL PROTECTED]
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ing faster. (Where'd they get that
name? Sounds like bathroom humor.)
> It's only minimal for low compression ratios. Regarding compression ratios
> j2k shines for high compression ratios.
Maybe so. I bought it primarily for the 16bpc capability.
--
Ciao, Paul D.
--
Ciao, Paul D. DeRocco
Paulmailto:[EMAIL PROTECTED]
> From: Robert Meier
>
> The good thing about j2k is that one image file can represent multiple
> resolutions, quality levels, etc. So if you are hosting a website you can
> first send a lower resolution image and
, Paul D. DeRocco
Paulmailto:[EMAIL PROTECTED]
> From: Julian Robinson
>
> Which I guess is because it is a "for sale" standard, not free?! I mean,
> if it works, and if it were **freely** available, I assume that browsers
> would i
er" than they should be.
I'm not sure what fluorescent red means, as compared simply to red. What RGB
values do you get when you hover over the objectionable color in PS?
--
Ciao, Paul D. DeRocco
//www.pbase.com/image/10906254
is exactly the sort of image that would be _much_ noisier on my DiMage 7. I
have no experience with high-end digicams, though.
--
Ciao, Paul D. DeRocco
Paulmailto:[
yet), it could prove to be
a major advantage. As I said in another post, my $350 2MP Digital Elph has
less noise than the 5MP DiMage 7 I paid $1300 for. The full frame high-end
digicams have lower noise still, all because the pixel sensors are bigger.
--
Ciao
iles on it.
> Again, all the cameras use special-purpose hardware. Hardware is cheap and
> fast. The processing time issue is completely bogus.
Are you saying that the typical digicam has more DSP horsepower than my
1.7GHz Pentium 4? I suppose it's possible that all digicams have some r
a
Bayer pattern chip is intrinsically better--it's just been worked on longer.
--
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Paulmailto:[EMAIL PROTECTED]
Unsubscribe by mail to [EMAIL
->Open dialog, then I
haven't a clue.
--
Ciao, Paul D. DeRocco
Paulmailto:[EMAIL PROTECTED]
> From: Ken Durling
>
> 1) This may be actually a Windows question, I'm running ME, but is
> there a way to change the default view of a folder whe
t's possible to
find it on the Adaptec web site if you need to reinstall it.
--
Ciao, Paul D. DeRocco
Paulmailto:pderocco@;ix.netcom.com
> From: Peter Marquis-Kyle
>
> [Nikon LS-30 scanner, Nikon Scan 3.1.2, Windows 2000]
>
> Nikon Scan was working
etive detail at high
spatial frequencies to create moire patterns. It shows how aliasing isn't an
issue most of the time.
--
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Paulmailto:pderocco@;ix.netcom.com
--
ible aliasing, and you
get better results by manually resampling.
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Paulmailto:pderocco@;ix.netcom.com
Unsubscribe by mail to [EMAIL PROTECTED], with 'uns
Windows on an Itanium because at the lowest level of the kernel, you need
_some_ 64-bit code, even if not trying to support 64-bit apps. And you
obviously can't run any 64-bit code on a Pentium.
--
Ciao, Paul D. DeRocco
Paulmailto:pderocco@;ix.netcom.com
>
I have no idea. I'm pretty sure that color images in newspapers are CMYK,
not CMY. So what?
--
Ciao, Paul D. DeRocco
Paulmailto:pderocco@;ix.netcom.com
> From: Austin Franklin
>
> Do they color manage their type? Color printing, yes, but black in
would
certainly eliminate it. Of course I'm talking about adding two actual bits
of data, not just a couple of zeroes.
--
Ciao, Paul D. DeRocco
Paulmailto:pderocco@;ix.netcom.com
> From: Austin Franklin
>
> Em, well...you are saying, say, a 1024 bit output L
I think they played around with it internally, before the Itanium was out.
But you're right that there's no such thing available right now.
--
Ciao, Paul D. DeRocco
Paulmailto:pderocco@;ix.netcom.com
> From: Austin Franklin
>
> Er, I don't b
thing as "accurate Internet color" until everyone
else has calibrated monitors. That's just marketing crapola.
--
Ciao, Paul D. DeRocco
Paulmailto:pderocco@;ix.netcom.com
> From: Laurie Solomon
>
> What I was actually refrring to was something
es to
reside in physical RAM at the same time.
Obviously, this isn't the case in the 64-bit versions of Windows for the
Alpha and the Itanium.
--
Ciao, Paul D. DeRocco
Paulmailto:pderocco@;ix.netcom.com
> From: Austin Franklin
>
> Correct, AND depending
ution,
those low values wouldn't be duplicated, and the high values wouldn't have
such large steps.
How often this difference is visible, I don't know.
--
Ciao, Paul D. DeRocco
Paulmailto:pderocco@;ix.netcom.com
> From: Austin Franklin
>
>
Sounds like it's really scanning in fewer bits, and the interpolation
arithmetic is smearing them around making it look like more bits. Are you
using PS to see the histogram?
Personally, I gave up on Silverfast after v4. Awful software--and awfully
expensive, too.
--
Ciao, P
sing will reduce aliasing, because it probably
has a rectangular response shape (meaning that it turns a dot into a sharply
defined circle, not a fuzzy blob). What's really needed is a diffuser.
NeatImage is a fairly low-cost investment, and I've had some good results
with it.
--
Ciao,
Really? Have you scanned the same slide in an anti-Newton glass mount and in
a conventional mount and compared them? I can easily see the difference on
my LS-2000, which is only 2700dpi.
--
Ciao, Paul D. DeRocco
Paulmailto:[EMAIL PROTECTED]
> From: Anth
Even anti-Newton glass degrades the image. It's quite obvious with an
anti-Newton glass slide mount.
--
Ciao, Paul D. DeRocco
Paulmailto:[EMAIL PROTECTED]
> From: Brian
>
> I have read about the fine powder technique before. But wouldn't this
&g
ery slight
matte finish). However, it will blur the image, so I've found.
I'd like to find a better way to flatten out buckled transparencies. I
wonder if there's some sort of heat treatment...
--
Ciao, Paul D. DeRocco
Paulmailto:[EMAIL PROTECTED]
> F
installing an
upgrade might re-enable something and override how your profiling software
sets up the video card.
--
Ciao, Paul D. DeRocco
Paulmailto:[EMAIL PROTECTED]
> From: [EMAIL PROTECTED]
>
> Just wondering, when you update your video card drivers i
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