Here's a compendium of some more-technical topics that don't really fit under FAQ's. These mini-tutorials will help you get a bit more background on some topics like color, monitors and digital
images. These are brief, so you should do your own further research! As always, if you need more information about our services, contact us.
What is color, anyway?Color is simply our perception of the wavelength of visible
light. We call a particular light wavelength of about 650 nanometers by the name "red", while a computer monitor calls red "#ff0000".
Color is also called "Hue", and can be
pure, or mixed with any shade of gray. The purity of a particular hue is called "Saturation". Finally, as we move the grayscale component value from black toward white, we change the "Value"
of the color from low to high.
How does monitor color work?In the computer's digital world, colors fit a coordinate
system called Red-Green-Blue, or "RGB" for short. Our "#ff0000" above for "red" was like writing "#max-red-no-green-no-blue", since the two "f"s represent the maximum possible red
value of 255 in hexadecimal number notation (whatever that is.) The two "00" pairs correspondingly ordered up zero green and then zero blue. Monitors use R, G and B
filters to display color as a mixture of these three fundamental colors, mixing the light that comes out of each monitor "pixel", or picture element, which are all
too small to see in normal use. Green, then, in your monitor is ordered up by the code "#00ff00", and blue is #0000ff".
How do color pickers work?Color pickers come up when you click one of the zone color
controls of a Perfect Paint Preview™ tool. (If you see a warning about unavailable color pickers, you may need to switch to a different web browser that supports color
pickers.) These popups show every available color the monitor can display, at every saturation and value point. Select a color by clicking a point within the
displayed hue-saturation-value regions.
How do digital cameras work?Digital cameras work something like monitors in reverse.
Where monitors shine white light through R, G and B filters to display colors, digital cameras use R, G and B filters to block light of the wrong color and detect reds, greens and blues in
the scene they're photographing. These filters cover microscopic light-sensitive regions called "pixels" (just like the monitor) arranged in a row-and-column array, which then
record the intensity of light of the filtered color.
A little electronic-circuit-based math, and the camera constructs a digital "map" of the scene's hue, saturation
and value, which becomes a digital image file. That's what happens "under the hood" when you take your photo to upload to the Perfect Paint Preview™ tool.
What's to know about digital camera image files?First, these image files have a length
and width, and these two dimensions have lots of consequences. For our purposes in the Perfect Paint Preview™ service, you want a picture that is at least about 4000 pixels wide and
about 2200 pixels high. That's about what you get from a "10-megapixel" camera. Smaller images don't have the detail you will want.
The second thing to know is that
your camera probably saves your image as a ".jpg" ("Jay-peg") file. That's a very good format to use, with this caveat. If you do any work with your image before you submit it for your
preview, make sure you always save it with a "100" quality factor. Normally software will default to 90 or even less.
How does paint get its color in the real world?While monitors and digital cameras
work by full light control using colored filters, paint works very differently: it receives environmental
light and reflects its own color back to your eye. This means that paint's appearance, including to a small degree its color, is
dependent on its environment: on weather, time of day and so forth. So always remember that paint must be evaluated recognizing its dependence on those
Results may vary, and will depend on customer-supplied image quality,
viewing monitor calibration and performance and other factors. This service provides approximate color information. Final color selection and color matches are the responsibility of the user.
notice. Reference herein to any specific commercial products, process, or service by trade name, trademark, manufacturer, or otherwise, does not necessarily constitute or imply its endorsement,
recommendation, or favoring by DesignByMoonlight Website Services, LLC. All trademarks and trademarked terms on this website are the property of their respective owners.