The FS4000US is designed to scan mounted 35mm slides (up to 4 at a time), 35mm
negatives or unmounted 35mm slide strips (up to 6 frames) and APS film (up to 40
exposures). There is no provision for scanning uncut rolls of 35mm film and there
is no slide feeder for unattended scanning of more than 4 slides at a time. If
you want to scan more than 6 frames at once, APS is your best bet (actually your
only option) as the FS4000US will automatically scan all 40 frames on a roll of
APS film.
Scans can be made of positives (transparencies) or negatives in either in
B&W at 8-bit or 14-bit depth or in color at 24-bit or 42-bit color depth.
This is a 35mm film scanner of course, so it does not scan prints or medium or
large format slides and negatives.
How good is the Software (Canon FilmGet)
Some people make a big deal about scanner software. Can you correct colors
easily? Can you correct contrast? Can you sharpen the image? Personally this
doesn't bother me too much, since I expect to tweak every scan in a real image
processing program like Photoshop, Picture Publisher (which the a program I tend
to use most) or even Photoshop LE or Photoshop Elements which are bundled with
most scanners (Photoshop LE 5.0 ships with the FS4000US). Just about any image
processing program is better than just about any scanner software. The only
advantage that using the scanner software might have is if the scanner software
worked at greater bit depth than the final output image. For example if you told
the scanner to output a 24-bit color image, but the scanner internally scanned at
42-bits and did all its corrections at 42-bits, then converted the result to
24-bits and output the file, then that would be better than editing the
uncorrected 24-bit file. However this scanner doesn't do that. All the software
corrections seem to be done at the 24-bit (8 bits per channel) level, whether the
final output file is 42-bit or 24-bit. For the very best possible results, scan
at 42-bit color depth, don't do any corrections with the supplied "FilmGet"
software, output a 42-bit file and edit that in a 42-bit editing program. Then
convert to a 24-bit file if that's the final form that you want.
The software installed easily. The scanner is plug and play of course, so you
simply attach it to a USB port, power up the PC and the usual hardware install
dialog pops up. You put the CD in your CD drive, tell the installer to look on
the CD for the driver and away it goes. The first time I tried this, for some
reason it installed the Spanish language version. Fine if you speak Spanish I
guess, but I don't. A simple reinstall, making sure it got the file from the
"English" subdirectory, fixed the problem.
The Filmget software which is supplied with the
scanner is a TWAIN module, not a stand alone program. It is called from your
image processing software and transfers the scanned image to the calling program.
It has modest capabilities for correcting
- Color
- Histograms
- Curves
- Brightness
- Rotation
As well as the usual controls over:
- Scanning resolution
- Cropping
- Color Depth
- Media type
- Dust removal level
- Focus (auto/manual)
- Exposure (auto/manual)
In general the software is functional if not state of the art. Image update
(showing the results of your changes) is somewhat slow and the degree of control
is somewhat limited. That being said, the software works, doesn't crash, is
reasonably intuitive and is capable of transferring the image into an image
processing program, which is more or less all I need it to do!
One slightly annoying feature is that the preview scan is done with the
current dust removal setting and dust is removed in the preview image. One the
one had this is useful to get a very general feel for how effective dust removal
will be. On the other hand it slows the preview scan, and if you decide to change
the dust removal setting, you have to do another preview scan since the old one
(with whatever cropping and corrections you made to it) is erased. I suppose this
is a feature, but it's one I could live without.
As mentioned earlier, one software "quirk" that others have noted is that it
seems that the Canon Filmget software does all its image processing at the 8 bit
level. This isn't a big deal with 8 bit images (i.e. 24 bit color images), but it
is for 14 bit (42 bit color) images. If you process the 14 bit image at 8 bit
precision and then save it at 14 bits, you lose information. If you want to scan
42 bit color images and need to process them to do color, density or histogram
corrections, take the unprocessed output from the FS4000US and use an image
processing program that can handle processing 16 bit (48 bit color) files.
Ed Hamrick's popular
Vuescan program supports the FS4000US if you don't like the Canon
software. It's much more flexible and offers many more options, though the price
for this is a steeper learning curve and less intuitive interface. There's also a
financial cost for the software too ($40), but you can get a trial version for
free to see if you like it. Try it, see if you like it and register it if you do.
Personally I still se the Canon software.
Neither Filmget nor Vuescan will allow you to scan 35mm true panoramic
negatives (24mm x 60-72mm) in one scan, even though the filmholder windows are
72mm wide. Apparently this is due to a hardware, not software, limitations so
don't expect any software to be able to do it. For panoramic negatives
you have to scan in two parts then combine them with software.
How good is the hardware?
Pretty good! The FS4000US has the reputation for excellent optics and is
regarded as one of the sharpest 4000dpi scanners around. I have no reason to
question that based on my scans. So far mine (which is around one year old) has
shown no mechanical problems, though it's only been subjected to light "amateur"
use. The film and negative holders are good and the APS module worked perfectly
the first time I plugged itin. The scanner makes all sorts of "whirring" noises
and moves the film carrier back and forth several times before each scan, but
that's the way it's designed I guess. Doesn't seem to result in any problems.
Above are a set of cropped scans of a high resolution
"chrome on glass" copy of the 1951 USAF resolution test pattern. The leftmost
image was scanned at 2000dpi and upsized by 200%. The middle image was scanned at
3000dpi and upsized by 133%. The rightmost image is a direct scan at 4000dpi,
original size. It's quite clear that image quality improves as resolution
increases. This isn't surprising of course, but it does show that the scanner
isn't optically limited, i.e. the imaging system can take full advantage of the
smaller step size used in high resolution scans. This image also answers the
question "is it worth the extra expense of a 4000dpi scanner". The answer is,
that, if you want to extract the maximum possible information from a slide,
scanning at 4000 dpi is an advantage. As in all things it's really a user
decision whether any added expense is worth any added performance. You don't need
4000dpi to scan for the web, but it's very useful if you're making large
prints.
Techspeak: If you want real numbers, at 4000 dpi the last resolved
pattern is group 6, set 2, which is 72 lp/mm. The horizontal component of group
6, set 3 is resolved, corresponding to 80 lp/mm. The theoretical maximum
resolution at 4000 dpi, based on the Nyquist theorem which requires sampling at
twice the signal frequency, should be 78 lp/mm. These numbers are approximate
since we're looking at square waves not sine waves, but still it seems clear that
the scanner is operating very close to the theoretical limit of resolution. It is
also apparent that the autofocus funtion is working well, since any focus errors
would result in lower resolution.
Real World Example
This is the full frame image, scanned at 4000dpi and downsized to fit on the
page. The area in the red box is reproduced below at full scale or as
indicated.
This is a scan made at 2400dpi on an HP Photosmart scanner. It has been
upsized by 167% to match the size of the 4000dpi scan shown below.
This is a scan made at 4000 dpi
on the Canoscan FS4000US scanner, reproduced actual size
While the difference between the 2400dpi and 4000dpi scans
isn't "night and day", the 4000 dpi scan clearly resolves more detail. The film
grain is just starting to show up at 4000dpi, wheras at 2400dpi the grain isn't
resolved. This image was shot on Sensia 100 film. With a higher resolution film
like Velvia, the difference between scans at 2400dpi and 4000dpi might be
expected to be greater since more detail would be recorded on the film.
Scan times
All these scan times were measured on a 550MHz AMD K6 PC (Windows 2000 Pro,
512MB RAM, 20GB free disk space) using the USB 1.1 interface. The times are from
clicking on the "go" button to the end of the operation and so take into account
time taken to move the slide carrier to the correct location (slide #3 in these
tests) plus any other setup time as well as the actual scan and data processing
and transfer time. Prior to full frame scan the scanning area was limited to the
actual visible area of the mounted slide (the slide crops a little off the full
frame image). The size of the full frame scans was approximately 5380 x 3550
pixels, making a 19MP image (57MB file at 24-bit color) and a 34.16mm x 22.54mm
scanned area.
|
OPERATION
(all in color mode)
|
Dust Removal OFF |
Dust Removal ON Standard |
Dust Removal ON Strong |
| Calibration (done once at startup) |
33s |
33s |
33s |
| Thumbnail scan (4 slides) |
15s |
15s |
15s |
| Preview scan |
38s |
54s |
54s |
| 4000dpi 24 bit full frame scan of mounted slide (5380 x 3550
pixels) |
4m 01s |
6m 28s |
6m 38s |
| 4000dpi 42 bit full frame scan of mounted slide (5380 x 3550
pixels) |
4m 13s |
6m 45 |
6m 58s |
It's interesting to note that scan times don't depend on whether the scan is
done at 24 bit color depth or 42 bit color depth. This suggests that either
scanning is always done at 42 bit, or that scan time is limited by the scanning
itself, not by the data transfer rate. The extra time required for standard and
strong dust removal is almost the same, suggesting the same algorithm is used in
each case but with slightly different parameters. The scanner also has a SCSI
port and connecting via SCSI may result in somewhat shorter scan times. I haven't
tested this because the scanner is fast enough for my needs and I don't really
want to mess with SCSI devices unless I have to! A faster processor would
slightly reduce the overall times by speeding up the image processing functions
(e.g. dust removal), but the difference would not likely be very significant
since a faster processor won't speed up the scanner itself or the USB data
transfer rate. This scanner isn't a speed king, but it's fast enough for me.
FARE (Film Automatic Retouching and Enhancement)
That's "dust and scratch removal" to most of us! Does it work...YES. It really
does. Does it reduce sharpness...NO, or at least so little that it's hard to
tell. Dust removal works by recording an infrared channel along with the usual
red, green and blue channels, then using the information in the IR channel to
tell the difference between dust and image. Scans take maybe 50% longer, but for
a dusty slide it's well worth the extra time. The images bellow were cropped from
full frame scans. Hardware techniques such as this are much more
effective at dust removal than purely software techniques and cause much
less loss of sharpness.
FARE does not work on conventional B&W negatives or on
Kodachrome color slides. It does work on all C-41 and E-6 process films (color
slides other than Kodachrome, color negatives and chromogenic B&W films). The
reason it doesn't work is related to the infrared transmission characteristics of
the film, which are different for C41/E6 and conventional B&W/Kodachrome.
Scanning or a Digital SLR?
I don't think there's much doubt that if your goal is digital images, you are
better off shooting with a digital SLR than shooting film and scanning. It's
cheaper, MUCH faster and a LOT less work. The drawback is that the digital SLR
will cost you from $2000 to $8000 depending on the image quality you need.
However, shooting with a digital SLR doesn't get any of your existing
slides and negatives into digital form, and most photographers have LOTS of
existing film based images. So even the digital SLR shooter probably still needs
a film and slide scanner!
Digital SLRs are also a rapidly evolving technology, so today's new model is
likely to be next month's "also ran" and next year's "obsolete model". Given that
DSLRs are now fairly common, I think that we will see much slower evolution of
film scanners. The current 4000 dpi level is probably as far as the "prosumer"
35mm scanner will go. Higher resolution probably won't buy you much and the
market for higher resolution scanners will be affected by the dropping prices on
DSLRs. If I'm going to spend $2000+, I'm going to be looking at a DSLR, not a
6000dpi 35mm film scanner. So I think that now is a pretty good time to buy a
scanner. Prices are reasonable, the technology isn't obsoleting new models every
few months and even if higher resolution models appear, the marginal improvement
in scan quality will probably be quite small. Though scanners with a larger
dynamic range would certainly help with "difficult" (dense) slides, today's
scanners are pretty good for 95% of properly exposed images. Canon claim a D-max
of 3.4 in 24-bit mode and 4.2 in 42-bit mode for the FS4000US.
Conclusion
If you want a 4000dpi scanner with dust removal, this one is a bargain. If you
want the ability to scan APS film it's even more of a bargain as it comes
complete with an adapter for APS film! The scan quality is very high and the
price is reasonable. It doesn't have an automatic slide feeder, so if you intend
to routinely scan 1000s of slides that might be a drawback. It doesn't have a
roll film adapter either, so if you want to scan uncut rolls of 35mm film, you're
out of luck. The 4000dpi 35mm Nikon Super Coolscan 4000ED does have roll film and
slide feeder adapters, but they are not cheap. Here's a comparison based on
02/2003 prices at B&H photo. For most users I think the Canoscan FS4000US is
a better deal, though for professional users who intend to do lots of
scanning on a routine basis, the Nikon may well be a better buy because of the
available accessories (but which push the total system cost to 2x to 3x that of
the Canon).
| |
Canon Canoscan FS4000US |
Nikon Super Coolscan 4000ED |
| Base Price |
$800 |
$1475 |
| APS adapter |
free (included) |
$195 ($1670 total) |
| Roll film adapter |
not available |
$480 |
| Automatic slide feeder |
not available |
$460 |
The best features of this scanner are:
- Optical performance
- Price
- Very effective dust and scratch removal (FARE)
Features that could be better are
- Scan time
- FilmGet Software (TWAIN driver)
I'd give this scanner
overall and
for value
Specifications (from Canon)
| Type |
Desktop Film Scanner |
| Optical Resolution |
Maximum 4,000dpi |
| Optical Density Range |
3.4 in 24-bit mode
4.2 in 42-bit mode |
| Film Type |
| 35mm |
Color (Positives/Negatives),
Monochrome (Positives/Negatives) |
| •Mounted slide film |
| •Filmstrip |
|
| Advanced Photo System (IX240) |
Color (Positives/Negatives),
Monochrome (Negatives) |
| •Mounted slide film |
| •Cartridge |
|
| Scanning Pixels |
35mm
3,780 X 5,669 pixels |
Advanced Photo System (IX240)
2,457 X 4,315 pixels |
| Scanning Area |
35mm
24.0 x 36.0 mm |
Advanced Photo System (IX240)
15.6 x 27.4 mm |
| Light Source |
Cold cathode mercury fluorescent lamp |
| Scanning Element |
Charged-Coupled Device 3-line color image sensor |
| Scanning Gradation |
14-bit scanning for each color (RGB)/16-bit, 8-bit
output |
| Focus Mode |
Auto/Manual (selectable) |
| Interface |
USB1.1/SCSI-2 |
| Interface Connectors |
USB connector x 1slot/SCSI half-pitch 50-pin
connectors x 2 slots
(Use interface switch on bottom panel.) |
| Power Supply |
100-240 Volts AC, 50/60Hz (switches automatically) |
| Power Consumption (maximum) |
Operating: 35W, Stand by: 12W |
| Dimension (W x H x D) |
92 x 144 x 368 mm (3.6 x 5.7 x 14.5 inches) |
| Net Weight |
2,400g (5.3lb.) |
All text and images (C)Copyright 2002-2003
Robert M. Atkins All
Rights Reserved
Add a comment
Notify me of comments