Using Photoshop, I'm trying to resize my large photos to the standard 4x6 inches for printing and then framing. However, once I get it down to 4x6 INCHES, the PIXELS become 432x288 and the filesize dramatically decreases (from megabytes to kilobytes). Then, when viewed at actual size, they're very small. Why is this? How do I get them to be actually 4x6 inches to be printed? Thanks.