Ideal technique of shade matching, recording, processing and communicating in dentistry and dental photographyNo matter how hard we try it is extremely difficult to capture the true colors of teeth as we see them ( as per the technology available today – NO CAMERA of the world is capable of recording true colors and that to consistently)
■Despite using fully manual settings colors might show some alterations in pictures taken at different times'
■USING A GREY CARD
■DOING COLOR CORRECTION (in a software) to remove any faulty color casts that occur due to flash light, angle, exposure settings, white balance settings etc.
What is a Grey Card?■Its is a simple card which is grey in color but manufactured using a very high Quality Control protocols and printed using the best technology available
■It is used by some of the best professional photographers of the world during commercial shoots where colors hold prime importance
■It is essentially 18 % GREY
■Dental Photography grey cards are usually credit card size and autoclaveable
■They last for a life time
■The almost never loose color if maintained and preserved cautiously
■This mid tone is essentially neither too white nor to black
■This is the aim of metering for every camera – to achieve a balance between not too white and not too black
■Now neither too white or neither too black is essentially GREY
■This means every camera sees in GREY during metering or aims at achieving a neutral 18 % grey
How does a grey card fit in for shade match in dentistry?■When we do shade matching we keep an 18 % grey card within the confines of the image we are composing
■Essentially what we are doing by this is that … we are ready to tell our image processing software that in the image we have an area which is 18 % grey
■This technique can be applied during lab communication by dentist or by lab as well
■During Composite buildups
■And other aesthetic procedures as well
■Note that the images which were opened in ACR (Adobe camera RAW) were RAW files which are way more accurate than a JGEG/ JPG file hence color corrections are more accurate
■Software like Picasa must be avoided
Can this technique be used for mobile phone images? mobile dental photography?
■Jpeg/ jpg images can be corrected with this technique
■It is a very simple technique and can be done by labs , ceramists and assistants as well.
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