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» Home » Graphics What
is Grayscale? Is It a Color Mode? Black and white photographic images are the most common examples of the grayscale color mode. We call them black and white photographs but the photo is actually made up of lots of different shades of gray. (It probably doesn't help that when a photo is printed from a computer, it is converted to a halftone image which is made up of purely black or white dots.) Sometimes people refer to black and white line drawings and logos as grayscale images. For the most part, this is inaccurate. Don't be fooled. There is a difference. If a logo or drawing is made up of shades of gray, like a charcoal or pencil drawing, then it is a grayscale (8-bit) image. If a logo or drawing is made up of either black or white lines, then it is a bitmap (1-bit) image. Why is this important? Well, if a designer were to scan a grayscale
image as a bitmap, he/she would note that they had lost all detail which
was not either black or white. Conversely, if they were to scan a bitmap
image as grayscale, they would notice that the black and white edges are
not sharp and would have soft bits of gray around them. This might look
better on-screen but, once printed, they'd see that the image was blurry
and made up of dots (like a photograph). Yuck
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rayscale
is a color mode made up of 256 shades of gray. These 256 colors include
absolute black, absolute white and 254 shades of gray in-between. Images
in grayscale mode have 8-
