zenphoto forums » General Zenphoto Discussion

Thumbnails Are Red

(4 posts)

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  1. ank333

    Apprentice
    Joined: Dec '10
    Posts: 2

    Hi - I'm wondering why and if there's anything I can do about how red my photos on zenphoto look in thumbnails (small and large) form. They're super red in all browsers. However, also in all browsers when you click on the photo a second time and it enlarges it, it looks correct. Is there anything I can do to make the smaller versions look the same as when they're enlarged? It's rare a viewer would enlarge a photo, therefore they're just seeing the red versions.

    I understand color management and embedded icc profiles and how they are and aren't recognized by some browsers. My question is why it's correct and incorrect within the same browser and on the same site (zenphoto).

    Thanks so much!

    This is the site in question, most evident in "headshots" where you can see skin tones.

    http://www.gallery.akeiganphoto.com

    Posted 2 years ago #

  2. Zenphoto development team
    sbillard

    Chief Developer
    Joined: May '07
    Posts: 9,767

    Mostly this is a WEB generic problem. Most browsers are not color profile aware and assume that images are in sRGB space. In addition, the PHP GD library does not preserve profiles when it acts upon images.

    If your server supports it you could try the Imagick library. It is colorspace aware and preserves the profiles. So that might help. Still, browsers which are not color aware will present problems. Otherwise you need to insure that your images are in sRGB space before uploading. (Generally speaking, this is the most universal solution anyway.)

    Don't forget to read the Forum rules and usage resources
    Posted 2 years ago #

  3. ank333

    Apprentice
    Joined: Dec '10
    Posts: 2

    thank you - i still don't understand why within the same browser and same site, the SAME photo would appear both correct and incorrect depending on how large it is. (and ftr, they are embedded with srgb).

    Posted 2 years ago #

  4. Zenphoto development team
    sbillard

    Chief Developer
    Joined: May '07
    Posts: 9,767

    The GD library does not propegate the color profile, so the sized images would NOT be imbedded with sRGB. Anyway, resizing does change pixels. It would not suprise me that the smaller the image the more "off" it would appear.

    Don't forget to read the Forum rules and usage resources
    Posted 2 years ago #

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