Drop shadow is a technique used to add depth and realism to text. It can be used to create shadows on objects, or to create a more realistic look for text in photos or illustrations. To add drop shadow, you will need Photoshop and a Drop Shadow tool. To start, open Photoshop and click on the Drop Shadow tool in the Tools palette. In the drop-down menu, you will see three options: Hard Edge, Soft Edge, and No Edge. The Hard Edge option will give you the most realistic results. If you choose this option, then your drop shadow will be very hard to see but will still look effective. The Soft Edge option will give you a softer drop shadow but it will not be as realistic as the Hard Edge option. If you choose this option, then your drop shadow will be less realistic but it will still look effective. Finally, the No Edge option will leave yourdropshadowuntouched and will look just like normal text without any shadows. Once you have chosen one of the options for yourdropshadow, click on OK to close Photoshop and start working on your document. You can use any type of object or photo to test out yourdropshadow before actually using it in your document.