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desaturation when uploading to internet

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Viewing 6 posts - 1 through 6 (of 6 total)
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  • #1581
    monsieurstabby
    Participant

    I’ve noticed that when I upload pictures to FB, flickr, & gmail they always get very desaturated, and reds turn orange. Anyone know what’s going on?

    #22106
    schnee
    Participant

    I’ve sort of noticed that too. I’ve always chalked it up to JPEG-ery. JPEG is not lossless and my theory is that when I upload an already lossy JPEG to a host, that host re-compresses it (for resizing or just because it can) and during the recompression, the image shifts.

    I haven’t researched the topic, however. A simple test would be to upload, download the uploaded and compare with the original.

    #22107
    sleeping
    Participant

    Most web browsers are not color space aware, so usually this problem happens if you’re saving the image in a color space other than SRGB. To fix this in Photoshop CS3: Edit > Convert to profile > Select SRGB.

    #22108
    monsieurstabby
    Participant

    thanks guys!

    #22109
    schnee
    Participant

    Wow, I was just tweaking my workflow and wound up embedding the wrong profile. I didn’t notice it b/c I was viewing in color-space aware apps. Once uploaded, it was obvious.

    ProPhoto RGB Colorspace:

    sRGB Colorspace:

    if they look darn similar, then you’ve got an interesting browser – one that is profile aware. On my Firefox, the ProPhoto one is much darker.

    Bigger versions available here, but really, there’s nothing there that you haven’t seen before.

    #22110
    orionid
    Participant

    Wow. Good to know.

    Thanks, schnee! And thanks monsieurstabby for asking!

Viewing 6 posts - 1 through 6 (of 6 total)
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