Picture quality

SofeSmity · Newb Joined: 08 Sep 2008 Posts: 9

Why do the colours on my downloaded pictures seem dull?

firehead · Posted: Sat Sep 20, 2008 9:35 pm Post subject:

Is it a JPG?
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Stratadrake · Posted: Sun Sep 21, 2008 9:24 am Post subject:

THe most common culprit is the quality settings of the image.

JPEG images for example frequently use use a trick called 'chroma subsampling' which stores the color channels at half the resolution of the full image, this reduces filesize significantly but it also reduces color quality somewhat. HOWEVER chroma subsampling at its worst only causes colors to 'bleed' or 'smear' by a few pixels at a time, it does not reduce the actual saturation (vividness) of solid colors.
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SofeSmity · Newb Joined: 08 Sep 2008 Posts: 9

I don' think it is
Its a picture that i draw then scan on my computer, the colour on the paper looks alright but on the screen its so dull

Stratadrake · Posted: Tue Sep 23, 2008 4:57 am Post subject:

Aha, I think I know that anwer to that one. It's a stock answer, really.

Firstly, if it's a plain pencil drawing then it probably doesn't have all that much contrast for the scanner to pick up on to begin with. Not only that, but many scanners default to a brightness (also called midtones, or gamma) which makes the image appear too bright and/or "faded" onscreen. It is also possible that the scanner washed out highlights detail.

You need to locate the exposure controls on your scanning software and play around with them to optimize the brightness of the captured image.
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SofeSmity · Newb Joined: 08 Sep 2008 Posts: 9

yay it worked thank you very much Very Happy