
ColorVision Monitor Spyder review
Phil Askey, April 2001
Probably the single biggest cause of ill-adjusted digital
photographs are uncalibrated / badly set up monitors. If your monitor
isn't set up to any particular standard and if your operating system /
photo package doesn't have the correct profile for your monitor you end
up in a situation where you correct images to look good on your screen
which may well look terrible to everyone else.
For professionals the need to have a calibrated display
has been around for a long time, yet the cost of calibration hardware
has left the ability to properly set up and calibrate your monitor display
to those who can afford it. Well, not for much longer...

ColorVision a new company have entered the market with
their new low-cost Monitor Spyder, this calibration device simply connects
to your PC (or Mac) via USB then attaches to your monitor screen and in
conjunction with either PhotoCal (low end set up / calibration) or OptiCal
(processional set up and calibration) software it allows you to first
of all properly configure your display and secondly create an accurate
ICC profile so that your colour aware applications (and operating systems)
can provide you with accurate, consistent colour reproduction on your
monitor.
Both PhotoCal and OptiCal generate ICC profiles, these
are loaded by a special program at boot up and work by simply reprogramming
the video look-up table on your graphics card, the pre-calibration process
is required to ensure your monitor is set to its optimum settings to give
you the maximum dynamic (light to dark) and gamut (colour) range. On a
Windows machine you must ensure you have disabled Adobe Gamma (if installed)
and that you clear any ICC profile selected in the "Color Management"
tab under display settings.
NOTE: The Monitor Spyder and PhotoCal/OptiCal are designed
for the calibration of CRT (Cathode Ray Tube) monitors, they will not
work on LCD panels or notebook LCD screens (although we hear that Color
Vision are working on a Monitor Spyder for LCD displays which should be
launched later this year). PhotoCal and OptiCal are available for Windows
98/2000/Me or Mac OS 8.6+, in this review we'll be testing the Windows
version on Windows 2000.

Monitor Spyder Specifications
| Measuring Functions |
CIE-XYZ |
| Receiver |
Eight silicon photodetectors;
Seven filtered sensors; Single neutral luminance sensor |
| System Response |
Closely matches CIE
1931; Standard Observer curves (xl, x2l, yl, zl) |
| Spectral Range |
400 - 700 nm |
| Dynamic Range |
0.1 - 200 cd/m2 |
| Measuring Aperture |
12 mm |
| Measuring Angle |
Vertical: 10°,
Horizontal: 20° |
| Refresh Rat |
40 - 150 Hz |
| Accuracy (Y > 10 cd/m2)
|
Luminance +/-
4% - Chroma: +/- 0.004 x,y (D65) |
| Inter-Instrument Consistancy |
Luminance +/-
1% Y; Chroma: > 0.002 x,y |
| Linearity (Y) |
+/- 2% over entire
range |
| Communications |
USB (Universal Serial
Bus) |
| Dimensions |
79 mm (diameter) x
37 mm (height) |
| Weight |
134 g |
ColorVision bundle the Monitor Spyder with two different
software packages (for different markets and prices):
| |
ColorVision Monitor
Spyder
with PhotoCal |
ColorVision Monitor
Spyder
with OptiCal |
| Price |
US$ 224 |
US$ 399 |
| Target |
Prosumers / quick setup
/ non-critical applications |
Professional digital
artists / photographers / designers |
| Monitor setup |
Pre-calibration included
in main application
|
Pre-calibration separate
program
Precise calibration a part of OptiCal |
| Precision mode |
No |
Yes, interactive contrast
/ brightness set up |
| Colour temperatures |
5000K, 6500K |
D50, D55, D60, D65,
D75
4000K, 5000K, 5500K, 6500, 7500, 9300K, Custom |
| Gamma |
1.8, 2.2 |
1.0, 1.2, 1.4, 1.6,
1.8, 2.0, 2.2, 2.5, Custom |
| Manual |
n/a |
Curve manipulation
Colorimeter |
| Recalibration |
n/a |
Reminder programmable
1 day - 6 months |
| Validation |
No |
Yes |

Physical design
During the pre-calibration monitor set up (tuning brightness
/ contrast / colour balance) and calibration the Spyder itself is attached
to the monitor by the three small suckers on its "legs", the
sensors in the center of the Spyder sit inside a rubber cup which ensures
that as little outside light as possible leaks into the sensor.
NOTES: It was our experience that you must turn off any
nearby spot lights / desk lamps and only have normal room lighting turned
on, any light which directly strikes the screen from a relatively close
distance can affect the calibration process. You should also ensure that
you screen is clean. It's also worth noting that if you have a screen
with a special anti-reflective coating (such as on our Sony G500) the
rubber cup itself will leave a mark on the screen which will require cleaning
fluid to remove.

Installation (Windows)
This stage of the process is the same for both PhotoCal
and OptiCal. As the Monitor Spyder is a USB device installation was a
a breeze, simply connect it to a spare USB port and load the drivers from
the supplied CD-ROM. That's it. From now onwards the actual process of
set up and calibration differs slightly depending on whether you have
purchased the PhotoCal or OptiCal bundle, we'll examine each on the next
two pages of the review.
|