Telling The Difference Between RGB And CMYK In Color Mixing

By Maryl Joop


Why is there a distinction between RGB and CMYK in printing? If you print, or are learning to print, on the web, you've likely had the lesson pounded into your head with a hammer that you need to make sure that your colors are set to RGB-red, green and blue.

If you don't do that, all your colors will skew and you have no idea why. If you print on paper then you've heard that the reverse is true.

Cameras have escalated to a high enough quality that taking a picture with the right camera will beautifully capture a realistic version of the painting itself. What constitutes the right camera you ask? Maybe when you think of taking a picture of it, you turn to your smart phone, or your sleek, pocket-sized camera that you take with you everywhere.

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They outstrip both the smart phone and the pocket-sized cameras (typically called point and shoots) in a few very important ways. A smart phone may have a ton of megapixels, but in the world of cameras, megapixels aren't all that matters. You have to have a big enough sensor to capture light for those megapixels to do much. The sensor is located at the back of the camera. It is the part that is exposed to the light presented before it. It captures light and saves it.

The larger the sensor, the more light it lets in. Good photography needs the right amount of light to capture the details. Your painting needs a large sensor to capture its brilliance. A camera from a smart phone typically has a sensor with the circumference of half a pencil eraser. That's not enough to capture the detail you're looking for to reprint it or post it on your website and blog.

An SLR has a significantly bigger sensor that captures the important details with a lot of megapixels to compliment it. Then you ask about the point and shoots (those pocket-sized cameras). Aren't they good enough? On the sensor side, they are still significantly smaller than the SLR. It can't let in the maximum amount of light.

Instead of adding together to add brilliance, they degenerate into lower color forms that are darker and colder. This is why CMYK is called a subtractive color. Cyan, magenta and yellow are the most complicated basic three colors. In light, they are just one step away from white. When you combine them, they can form nearly any color by slowly deconstructing in controlled ways. Combining all three of these colors does not make black however.

Black was added to the mix because no matter how much you mix cyan, magenta and yellow, they just simply won't create a true black. You will make a few darker, dirty browns that can be useful.

You need both for your artwork. Alphagraphics specializes in printing quality pictures in Ogden. They provide a wide variety of printing services to help you reproduce the paintings that mean something to you at an affordable price.




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