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I'm really new to Photoshop, but I use Indesign and Illustrator regularly. I have a picture of a product (books basically) that have a white background and I need that background to be transparent. I used the quick selection tool to select all the white space, then selected the inverse, cut and paste into a new file with a transparent background. When I do this the image ends up looking different-- kinda grainy, ragged edges. What is the best way to change the background to transparent without losing the image quality?
Here are links to the photos
After trying to remove background: