How to Cut Out Images in Photoshop Using Polygonal Lasso Tool
If you want to put an image on a color background and have crisp edges, the best way is to isolate the object. There are a couple of ways to do it. I have had best results using this method. It requires a little work but once done you can use blending options to create drop shadows, inner shadows, bevels, textures, and many other great effects to give very realistic effects to images for product display and art.