I have Magento ver. 126.96.36.199 and i realized that i have a problem with image quality, light and hue. My images are .jpg and when i upload them into the backend into the product, the images looks ok, but in the front end are darker. I tried all things i found over the internet about the Gd2 file and image file, changed the quality from 80 to 100 and other stuff and dont work. I am also using an extension called Magic Zoom Plus.
I uploaded a file for you to see the difference between the images.
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