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White Target

 
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(more info)


Notice for July 2008:
During the month of July, shipping will only be done using the "Small Packet" method, with a typical one week shipping time. Expedited shipping using Purolator or FedEx will not be available; expedited shipping will return in August. Thank-you for your understanding.
   

A great tool
to White-Balance
your pictures!

 

Applications

Features

Technical info

Target FAQs

Price info ($)

Buy now!

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Applications

  • Ideal as a reference for “RAW” file calibration, as shown on the right. Top image: RAW image as opened (camera set with manual Tungsten White Balance). Middle image: White Balance obtained by clicking on the target. Bottom image: exposure corrected by monitoring the target white.
     

  • Include the target in test
    pictures to balance your
    white in digital images
    (not just RAW !;
    see FAQ-21)
     
  • With no white whiter, use
    it to prevent overexposure
     
  • Check your spectrometer
    or colorimeter calibration
     
  • Convenient “absolute”
    reference for scientific work

Open or download these Applications Notes for detailed examples:

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Features

  • Stable reflectance under various lights and over time
  • Highly diffused surface
  • Waterproof
  • Thermally stable
  • Not fluorescent
  • Shipped in a protective phenolic case with a transparent cap

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Technical info

Nominal Target size: 1.18 inch (30 mm) diameter; 0.355 inch (9 mm) thickness

Here are typical measurements for the target (see note); the RGB data is representative of many common RGB spaces such as Adobe (1998), ProPhoto, and sRGB:

  • L*a*b* (D50): 99.5 / -0.08 / -0.40
  • RGB: (253, 254, 254)

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 more similar R, G, and B values.
  • Nearly identical L*a*b* or RGB coordinates are obtained 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.

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Purchasing info

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 in. diam., black case
Item No. N99-3009-01

$79.00 (US$)

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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? Contact us

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Copyright © 2003-2008 The BabelColor Company. All rights reserved.
Last modification : 30 June 2008