With the eLAB system you can transform your digital camera into an easy to use shade matching system by following this photographic protocol

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1. Watch out for dehydration! After exposure to air for more than 2 Min, dehydration sets in and shade images need to be taken some other day.

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2. Turn off E-TTL when using polar_eyes! Use the manual mode to set the intensity to 1/1 or 1/2. The image quality should be set to RAW (not JPEG).

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3. Always use retractors and make sure they are held firmly by the end of their handles, pulled up and back towards the ears. Matte black retractors are ideal.

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4. The optical axis of the camera should be aligned perpendicular to the vertical plane of the white_balance card.

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5. Use the Magic Hand Trick to check your working distance which should be between 22 - 28 cm in most cases.

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6. Make sure the white_balance card is positioned in the middle of the frame and that it covers the entire image width. 

 

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7. Take one cross-polarized image with polar_eyes and with the white_balance card placed slightly below the incisal edges.

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8. For reflected images without polar_eyes, the flash intensity needs to be lowered to ~1/4 in the manual mode or you can simply switch to E-TTL.

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9. Use the Magic Hand Trick again to check your working distance for the reflected image.

 

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10. Take one reflected image for your dental lab to provide useful information about the surface texture and gloss.