Resolution quality from most digital cameras can vary For best results, use a camera that is at least 3 megapixels and take your photo at the highest setting.
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Digital images
Scanned images
If you are starting with a physical photograph(hard copy) or piece of art, scan at 300 dpi resolution for best results. If you don't have a scanner, take it to your local copy store and have it scanned.You may also try to take a photo of it from your smartphone or camera. Then you can upload the image from your computer.