We have a client is complaining they are getting a color shift when uploading an image. If we don't have anything modifying images in the admin section, what could be affecting colors after image upload?
Admin Image – Fix Color Shift After Uploading to Magento
adminimage
Related Solutions
Sadly i didn't have time to go the scripts you have there line by line, BUT It could be that you haven't remember to alter the form to set the multipartbit that is necessary for the file upload.
$form = new Varien_Data_Form(array('enctype' => 'multipart/form-data', 'method' => 'post'));
But if it does have that then you have an issue with your codes and i'd suggest you to use Zend_Debug::dump($_FILES) to log out do you get the right data on the submission.
Or Mage::log($message) that should output the logs under /etc/logs/system.log
You can define the base product image dimensions in config -> catalog -> product image.
I expect it would be possible to write a custom module to further perform image resizing but it would be simpler to either create your images in the format you want or use a free image editing package (such as IrfanView) to bulk modify the images you want to use before you upload them.
Best Answer
My guess is they are using Mac/Firefox and have sRGB profiles embedded within their images.
Magento requires the
GD2library be installed prior to installation. Most all "Image" facilities will get pushed through it for resizing, thumbnail generation, etc.The alternative is ImageMagick as it tends to have better quality results, however processing time may be greatly increased. Not to mention cranking up quality means slower download times on the client end as well.
A drop-in replacement (ImageMagick adapter) for Magento:
You can also try and increase the quality with
->setQuality(90)in any calls to the images to see if it helps, but I'm going to assume the color profiles is the source of the issues, and possibly GD2's library.A few questions: What file types are they using, and what color profiles if any? Also, a version of GD2 may help as well. You should be able to find this in
phpinfo();Hope this helps...
Some further reading: