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Opteka Premium Reference Color & White Balance Grey Card Set With Quick-Release Neck Strap for Digital Photography | 
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| Brand: Opteka
Category: Photography
List Price: $39.99
Buy New: $9.99
You Save: $30.00 (75%)
New (2) from $9.99
Media: Electronics
Warranty: 1 Year Warranty
MPN: OPT-DGC
Model: OPT-DGC
UPC: 049368821025
EAN: 0049368821025
ASIN: B001G04VJO
Availability: Usually ships in 1-2 business days
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| Features:
| • | Includes three color calibrated reference cards. | | • | Dimensions 3.2" X 2.2" 0.1" (83 by 50 cm) | | • | Logo label with focus target is affixed to one side of the grey card. Both sides of the cards are usable for white balance. | | • | Works with any digital camera, for JPEG and RAW files | | • | Certified performance and quality. |
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| Editorial Reviews:
Product Description
The color values of Opteka Digital Grey Card set have been tested under varying light conditions and show a high degree of spectral neutrality. Using the industry-standard X-Rite spectrophotometer, LAB values of L* 63.8, a* -1.6, b* -0.4 are measured from the surface of the grey card under D50 standard illuminant. For optimum color correction, the black card achieves truly deep blacks (RGB 16,16,15). The grey card displays superior spectral neutrality with measured values of 162, 162, 160. The white card has a tested RGB value of (220, 224, 223). All three cards have excellent uniformity across a range of light sources.
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