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Applications
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Features / Specifications
- Nominal Target size: 1.18 inch (30 mm)
diameter; 0.355 inch (9 mm) thickness
- L*a*b* (D50): 99.5 / -0.08 / -0.40
(Typical; see
note)
- RGB: (253, 254, 254). These numbers
are representative of many common RGB spaces such as Adobe (1998), ProPhoto,
and sRGB.
- Stable reflectance under various lights and over time
- Highly diffused (non-specular, i.e.
non-reflective) surface
- Waterproof
- Thermally stable
- Not fluorescent
- Shipped in a protective phenolic case with a
transparent cap
Three specific advantages of this target are:
- A reflectance of 99% ±1% over the visible
spectrum. This translates to a Lightness value, the L* of the L*a*b*
notation, of 99.5, and RGB values around 254 for many common RGB spaces. In
comparison, many white targets for photography, sold individually or part of
a multi-colored set, display a maximum reflectance of about 96% (that would
not even be visible in the following graph!), with a L*
value of 96 and RGB coordinates around 243.
- A very neutral appearance, i.e. without a perceived
tint. Its a* and b* values, the color components of the L*a*b* notation, are
well below one (-1 or +1), which translates into nearly identical R, G, and B values.
- The L*a*b* and RGB coordinates remain
essentially the same for a wide array of white illuminants (A, C, D50, D55, D65, F3,
F11, etc.); this target thus exhibits almost no metamerism effect,
i.e. no change in perceived white (Note: the exact technical term for a
change in a single perceived color with various illuminants is
Color Inconstancy, which is
very low in this case).
These characteristics make this target a valued tool
whenever color accuracy is essential.
Note:
Measurements done with a spectrophotometer, 45°/0° geometry, Illuminant D50, 2
degree Standard Observer. The L*a*b* and reflectance values of your target may
differ from the typical values (Back
to Features).
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Get a FREE bracelet to hold
your target
and better
Watch your White!
TM
You can even use the bracelet as a glare-free neutral-black
reference
(typical L*a*b* D50 value = 13 / 0.1 / -0.9). |
|
White Target
99% reflectance
30 mm / 1.2 inch diameter, black case
Item No. N99-3009-01
$83.95 (US$)
|
View Cart
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The following
credit cards are accepted:
   
PayPal can also be used, of course.
Please consult the
PayPal
site for the complete list of payment methods.
Questions? See our
FAQ.
Other questions or problems with the purchasing process?
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